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1. Correction to 'Adiposity, compared to masculinity, serves as a more valid cue to immunocompetence in human mate choice'

Author: Rantala, M. J., Coetzee, V., Moore, F. R., Skrinda, I., Kecko, S., Krama, T., Kivleniece, I., and Krams, I.
Published: 2017

2. The son-killer microbe Arsenophonus nasoniae is a widespread associate of the parasitic wasp Nasonia vitripennis in Europe

Author: Nadal-Jimenez, P., Frost, C.L., Cláudia Norte, A., Garrido-Bautista, J., Wilkes, T.E., Connell, R., Rice, A., Krams, I., Eeva, T., Christe, P., Moreno-Rueda, G., and Hurst, GDD
Subjects: Female, Male, Animals, Wasps/microbiology, Nuclear Family, Gammaproteobacteria, Enterobacteriaceae, Insecta, Europe, Arsenophonus nasoniae, Endosymbiont, Infection model, Nasonia vitripennis
Abstract: Heritable microbes that exhibit reproductive parasitism are common in insects. One class of these are the male-killing bacteria, which are found in a broad range of insect hosts. Commonly, our knowledge of the incidence of these microbes is based on one or a few sampling sites, and the degree and causes of spatial variation are unclear. In this paper, we examine the incidence of the son-killer microbe Arsenophonus nasoniae across European populations of its wasp host, Nasonia vitripennis. In preliminary work, we noticed two female N. vitripennis producing highly female biased sex ratios in a field study from the Netherlands and Germany. When tested, the brood from Germany was revealed to be infected with A. nasoniae. We then completed a broad survey in 2012, in which fly pupal hosts of N. vitripennis were collected from vacated birds' nests from four European populations, N. vitripennis wasps allowed to emerge and then tested for A. nasoniae presence through PCR assay. We then developed a new screening methodology based on direct PCR assays of fly pupae and applied this to ethanol-preserved material collected from great tit (Parus major) nests in Portugal. These data show A. nasoniae is found widely in European N. vitripennis, being present in Germany, the UK, Finland, Switzerland and Portugal. Samples varied in the frequency with which they carry A. nasoniae, from being rare to being present in 50% of the pupae parasitised by N. vitripennis. Direct screening of ethanol-preserved fly pupae was an effective method for revealing both wasp and A. nasoniae infection, and will facilitate sample transport across national boundaries. Future research should examine the causes of variation in frequency, in particular testing the hypothesis that N. vitripennis superparasitism rates drive the variation in A. nasoniae frequency through providing opportunities for infectious transmission.
Published: 2023

3. The effect of climate change on avian offspring production:a global meta-analysis

Author: Halupka, L. (Lucyna), Arlt, D. (Debora), Tolvanen, J. (Jere), Millon, A. (Alexandre), Bize, P. (Pierre), Adamik, P. (Peter), Albert, P. (Pascal), Arendt, W. J. (Wayne J.), V. Artemyev, A. (Alexander), Baglione, V. (Vittorio), Banbura, J. (Jerzy), Banbura, M. (Miroslawa), Barba, E. (Emilio), Barrett, R. T. (Robert T.), Becker, P. H. (Peter H.), Belskii, E. (Eugen), Bolton, M. (Mark), Bowers, E. K. (E. Keith), Bried, J. (Joel), Brouwer, L. (Lyanne), Bukacinska, M. (Monika), Bukacinski, D. (Dariusz), Bulluck, L. (Lesley), Carstens, K. F. (Kate F.), Catry, I. (Ines), Charter, M. (Motti), Chernomorets, A. (Anna), Covas, R. (Rita), Czuchra, M. (Monika), Dearborn, D. C. (Donald C.), de Lope, F. (Florentino), Di Giacomo, A. S. (Adrian S.), Dombrovski, V. C. (Valery C.), Drummond, H. (Hugh), Dunn, M. J. (Michael J.), Eeva, T. (Tapio), Emmerson, L. M. (Louise M.), Espmark, Y. (Yngve), Fargallo, J. A. (Juan A.), Gashkov, S. I. (Sergey I.), Golubova, E. Y. (Elena Yu.), Griesser, M. (Michael), Harris, M. P. (Michael P.), Hoover, J. P. (Jeffrey P.), Jagielio, Z. (Zuzanna), Korell, P. (Patrik), Kloskowski, J. (Janusz), Koenig, W. D. (Walter D.), Kolunen, H. (Heikki), Korczak-Abshire, M. (Magorzata), Korpimaeki, E. (Erkki), Krams, I. (Indrikis), Krist, M. (Milos), Kruger, S. C. (Sonja C.), Kuranov, B. D. (Boris D.), Lambin, X. (Xavier), Lombardo, M. P. (Michael P.), Lyakhov, A. (Andrey), Marzal, A. (Alfonso), Moller, A. P. (Anders P.), Neves, V. C. (Veronica C.), Nielsen, J. T. (Jan Tottrup), Numerov, A. (Alexander), Orlowska, B. (Beata), Oro, D. (Daniel), oest, M. (Markus), Phillips, R. A. (Richard A.), Pietiaeinen, H. (Hannu), Polo, V. (Vicente), Porkert, J. (Jiri), Potti, J. (Jaime), Poeysae, H. (Hannu), Printemps, T. (Thierry), Prop, J. (Jouke), Quillfeldt, P. (Petra), Ramos, J. A. (Jaime A.), Ravussin, P.-A. (Pierre-Alain), Rosenfield, R. N. (Robert N.), Roulin, A. (Alexandre), Rubenstein, D. R. (Dustin R.), Samusenko, I. E. (Irina E.), Saunders, D. A. (Denis A.), Schaub, M. (Michael), Senar, J. C. (Juan C.), Sergio, F. (Fabrizio), Solonen, T. (Tapio), V. Solovyeva, D. (Diana), Stepniewski, J. (Janusz), Thompson, P. M. (Paul M.), Tobolka, M. (Marcin), Toeroek, J. (Janos), van de Pol, M. (Martijn), Vernooij, L. (Louis), Visser, M. E. (Marcel E.), Westneat, D. F. (David F.), Wheelwright, N. T. (Nathaniel T.), Wiacek, J. (Jaroslaw), Wiebe, K. L. (Karen L.), Wood, A. G. (Andrew G.), Wuczynski, A. (Andrzej), Wysocki, D. (Dariusz), Zarybnicka, M. (Marketa), Margalida, A. (Antoni), Halupka, K. (Konrad), Halupka, L. (Lucyna), Arlt, D. (Debora), Tolvanen, J. (Jere), Millon, A. (Alexandre), Bize, P. (Pierre), Adamik, P. (Peter), Albert, P. (Pascal), Arendt, W. J. (Wayne J.), V. Artemyev, A. (Alexander), Baglione, V. (Vittorio), Banbura, J. (Jerzy), Banbura, M. (Miroslawa), Barba, E. (Emilio), Barrett, R. T. (Robert T.), Becker, P. H. (Peter H.), Belskii, E. (Eugen), Bolton, M. (Mark), Bowers, E. K. (E. Keith), Bried, J. (Joel), Brouwer, L. (Lyanne), Bukacinska, M. (Monika), Bukacinski, D. (Dariusz), Bulluck, L. (Lesley), Carstens, K. F. (Kate F.), Catry, I. (Ines), Charter, M. (Motti), Chernomorets, A. (Anna), Covas, R. (Rita), Czuchra, M. (Monika), Dearborn, D. C. (Donald C.), de Lope, F. (Florentino), Di Giacomo, A. S. (Adrian S.), Dombrovski, V. C. (Valery C.), Drummond, H. (Hugh), Dunn, M. J. (Michael J.), Eeva, T. (Tapio), Emmerson, L. M. (Louise M.), Espmark, Y. (Yngve), Fargallo, J. A. (Juan A.), Gashkov, S. I. (Sergey I.), Golubova, E. Y. (Elena Yu.), Griesser, M. (Michael), Harris, M. P. (Michael P.), Hoover, J. P. (Jeffrey P.), Jagielio, Z. (Zuzanna), Korell, P. (Patrik), Kloskowski, J. (Janusz), Koenig, W. D. (Walter D.), Kolunen, H. (Heikki), Korczak-Abshire, M. (Magorzata), Korpimaeki, E. (Erkki), Krams, I. (Indrikis), Krist, M. (Milos), Kruger, S. C. (Sonja C.), Kuranov, B. D. (Boris D.), Lambin, X. (Xavier), Lombardo, M. P. (Michael P.), Lyakhov, A. (Andrey), Marzal, A. (Alfonso), Moller, A. P. (Anders P.), Neves, V. C. (Veronica C.), Nielsen, J. T. (Jan Tottrup), Numerov, A. (Alexander), Orlowska, B. (Beata), Oro, D. (Daniel), oest, M. (Markus), Phillips, R. A. (Richard A.), Pietiaeinen, H. (Hannu), Polo, V. (Vicente), Porkert, J. (Jiri), Potti, J. (Jaime), Poeysae, H. (Hannu), Printemps, T. (Thierry), Prop, J. (Jouke), Quillfeldt, P. (Petra), Ramos, J. A. (Jaime A.), Ravussin, P.-A. (Pierre-Alain), Rosenfield, R. N. (Robert N.), Roulin, A. (Alexandre), Rubenstein, D. R. (Dustin R.), Samusenko, I. E. (Irina E.), Saunders, D. A. (Denis A.), Schaub, M. (Michael), Senar, J. C. (Juan C.), Sergio, F. (Fabrizio), Solonen, T. (Tapio), V. Solovyeva, D. (Diana), Stepniewski, J. (Janusz), Thompson, P. M. (Paul M.), Tobolka, M. (Marcin), Toeroek, J. (Janos), van de Pol, M. (Martijn), Vernooij, L. (Louis), Visser, M. E. (Marcel E.), Westneat, D. F. (David F.), Wheelwright, N. T. (Nathaniel T.), Wiacek, J. (Jaroslaw), Wiebe, K. L. (Karen L.), Wood, A. G. (Andrew G.), Wuczynski, A. (Andrzej), Wysocki, D. (Dariusz), Zarybnicka, M. (Marketa), Margalida, A. (Antoni), and Halupka, K. (Konrad)
Abstract: Climate change affects timing of reproduction in many bird species, but few stud-ies have investigated its influence on annual reproductive output. Here, we assess changes in the annual production of young by female breeders in 201 populations of 104 bird species (N = 745,962 clutches) covering all continents between 1970 and 2019. Overall, average offspring production has declined in recent decades, but considerable differences were found among species and populations. A total of 56.7% of populations showed a declining trend in offspring production (significant in 17.4%), whereas 43.3% exhibited an increase (significant in 10.4%). The results show that climatic changes affect offspring production through compounded effects on ecological and life history traits of species. Migratory and larger-bodied species experienced reduced offspring production with increasing temperatures during the chick-rearing period, whereas smaller-bodied, sedentary species tended to produce more offspring. Likewise, multi-brooded species showed increased breeding success with increasing temperatures, whereas rising temperatures were unrelated to repro-ductive success in single-brooded species. Our study suggests that rapid declines in size of bird populations reported by many studies from different parts of the world are driven only to a small degree by changes in the production of young.
Published: 2023

4. Interaction of climate change with effects of conspecific and heterospecific density on reproduction

Author: Møller, A.P., Balbontín, J., Dhondt, A.A., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouvier, J.-C., Camprodon, J., Cecere, F., Charter, M., Cichoń, M., Cusimano, C., Dubiec, A., Eens, M., Eeva, T., Ferns, P.N., Forsman, J.T., Goldshtein, A., Goodenough, A.E., Gosler, A.G., Gustafsson, L., Harnist, I., Hartley, I.R., Heeb, P., Hinsley, S.A., Jacob, S., Järvinen, A., Juškaitis, R., Korpimäki, E., Krams, I., Laaksonen, T., Leclercq, B., Lehikoinen, E., Loukola, O., Mainwaring, M.C., Mänd, R., Massa, B., Matthysen, E., Mazgajski, T.D., Merino, S., Mitrus, C., Mönkkönen, M., Nager, R.G., Nilsson, J.-Å., Nilsson, S.G., Norte, A.C., von Numers, M., Orell, M., Pimentel, C.S., Pinxten, R., Priedniece, I., Remeš, V., Richner, H., Robles, H., Rytkönen, S., Senar, J.C., Seppänen, J.T., da Silva, L.P., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M.J., Török, J., Tryjanowski, P., van Noordwijk, A.J., Walankiewicz, W., Lambrechts, M.M., Møller, A.P., Balbontín, J., Dhondt, A.A., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouvier, J.-C., Camprodon, J., Cecere, F., Charter, M., Cichoń, M., Cusimano, C., Dubiec, A., Eens, M., Eeva, T., Ferns, P.N., Forsman, J.T., Goldshtein, A., Goodenough, A.E., Gosler, A.G., Gustafsson, L., Harnist, I., Hartley, I.R., Heeb, P., Hinsley, S.A., Jacob, S., Järvinen, A., Juškaitis, R., Korpimäki, E., Krams, I., Laaksonen, T., Leclercq, B., Lehikoinen, E., Loukola, O., Mainwaring, M.C., Mänd, R., Massa, B., Matthysen, E., Mazgajski, T.D., Merino, S., Mitrus, C., Mönkkönen, M., Nager, R.G., Nilsson, J.-Å., Nilsson, S.G., Norte, A.C., von Numers, M., Orell, M., Pimentel, C.S., Pinxten, R., Priedniece, I., Remeš, V., Richner, H., Robles, H., Rytkönen, S., Senar, J.C., Seppänen, J.T., da Silva, L.P., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M.J., Török, J., Tryjanowski, P., van Noordwijk, A.J., Walankiewicz, W., and Lambrechts, M.M.
Abstract: We studied the relationship between temperature and the coexistence of great tit Parus major and blue tit Cyanistes caeruleus, breeding in 75 study plots across Europe and North Africa. We expected an advance in laying date and a reduction in clutch size during warmer springs as a general response to climate warming and a delay in laying date and a reduction in clutch size during warmer winters due to density-dependent effects. As expected, as spring temperature increases laying date advances and as winter temperature increases clutch size is reduced in both species. Density of great tit affected the relationship between winter temperature and laying date in great and blue tit. Specifically, as density of great tit increased and temperature in winter increased both species started to reproduce later. Density of blue tit affected the relationship between spring temperature and blue and great tit laying date. Thus, both species start to reproduce earlier with increasing spring temperature as density of blue tit increases, which was not an expected outcome, since we expected that increasing spring temperature should advance laying date, while increasing density should delay it cancelling each other out. Climate warming and its interaction with density affects clutch size of great tits but not of blue tits. As predicted, great tit clutch size is reduced more with density of blue tits as temperature in winter increases. The relationship between spring temperature and density on clutch size of great tits depends on whether the increase is in density of great tit or blue tit. Therefore, an increase in temperature negatively affected the coexistence of blue and great tits differently in both species. Thus, blue tit clutch size was unaffected by the interaction effect of density with temperature, while great tit clutch size was affected in multiple ways by these interactions terms.
Published: 2020

5. Interaction of climate change with effects of conspecific and heterospecific density on reproduction

Author: Moller, A. P. (Anders Pape), Balbontin, J. (Javier), Dhondt, A. A. (Andre A.), Adriaensen, F. (Frank), Artemyev, A. (Alexandr), Banbura, J. (Jerzy), Barba, E. (Emilio), Biard, C. (Clotilde), Blondel, J. (Jacques), Bouvier, J.-C. (Jean-Charles), Camprodon, J. (Jordi), Cecere, F. (Francesco), Charter, M. (Motti), Cichon, M. (Mariusz), Cusimano, C. (Camillo), Dubiec, A. (Anna), Eens, M. (Marcel), Eeva, T. (Tapio), Ferns, P. N. (Peter N.), Forsman, J. T. (Jukka T.), Goldshtein, A. (Aya), Goodenough, A. E. (Anne E.), Gosler, A. G. (Andrew G.), Gustafsson, L. (Lars), Harnist, I. (Iga), Hartley, I. R. (Ian R.), Heeb, P. (Philipp), Hinsley, S. A. (Shelley A.), Jacob, S. (Staffan), Jarvinen, A. (Antero), Juskaitis, R. (Rimvydas), Korpimaki, E. (Erkki), Krams, I. (Indrikis), Laaksonen, T. (Toni), Leclercq, B. (Bernard), Lehikoinen, E. (Esa), Loukola, O. (Olli), Mainwaring, M. C. (Mark C.), Mand, R. (Raivo), Massa, B. (Bruno), Matthysen, E. (Erik), Mazgajski, T. D. (Tomasz D.), Merino, S. (Santiago), Mitrus, C. (Cezary), Monkkonen, M. (Mikko), Nager, R. G. (Ruedi G.), Nilsson, J.-a. (Jan-ake), Nilsson, S. G. (Sven G.), Norte, A. C. (Ana C.), von Numers, M. (Mikael), Orell, M. (Markku), Pimentel, C. S. (Carla S.), Pinxten, R. (Rianne), Priedniece, I. (Ilze), Remes, V. (Vladimir), Richner, H. (Heinz), Robles, H. (Hugo), Rytkonen, S. (Seppo), Senar, J. C. (Juan Carlos), Seppanen, J. T. (Janne T.), da Silva, L. P. (Luis P.), Slagsvold, T. (Tore), Solonen, T. (Tapio), Sorace, A. (Alberto), Stenning, M. J. (Martyn J.), Torok, J. (Janos), Tryjanowski, P. (Piotr), van Noordwijk, A. J. (Arie J.), Walankiewicz, W. (Wieslaw), Lambrechts, M. M. (Marcel M.), Moller, A. P. (Anders Pape), Balbontin, J. (Javier), Dhondt, A. A. (Andre A.), Adriaensen, F. (Frank), Artemyev, A. (Alexandr), Banbura, J. (Jerzy), Barba, E. (Emilio), Biard, C. (Clotilde), Blondel, J. (Jacques), Bouvier, J.-C. (Jean-Charles), Camprodon, J. (Jordi), Cecere, F. (Francesco), Charter, M. (Motti), Cichon, M. (Mariusz), Cusimano, C. (Camillo), Dubiec, A. (Anna), Eens, M. (Marcel), Eeva, T. (Tapio), Ferns, P. N. (Peter N.), Forsman, J. T. (Jukka T.), Goldshtein, A. (Aya), Goodenough, A. E. (Anne E.), Gosler, A. G. (Andrew G.), Gustafsson, L. (Lars), Harnist, I. (Iga), Hartley, I. R. (Ian R.), Heeb, P. (Philipp), Hinsley, S. A. (Shelley A.), Jacob, S. (Staffan), Jarvinen, A. (Antero), Juskaitis, R. (Rimvydas), Korpimaki, E. (Erkki), Krams, I. (Indrikis), Laaksonen, T. (Toni), Leclercq, B. (Bernard), Lehikoinen, E. (Esa), Loukola, O. (Olli), Mainwaring, M. C. (Mark C.), Mand, R. (Raivo), Massa, B. (Bruno), Matthysen, E. (Erik), Mazgajski, T. D. (Tomasz D.), Merino, S. (Santiago), Mitrus, C. (Cezary), Monkkonen, M. (Mikko), Nager, R. G. (Ruedi G.), Nilsson, J.-a. (Jan-ake), Nilsson, S. G. (Sven G.), Norte, A. C. (Ana C.), von Numers, M. (Mikael), Orell, M. (Markku), Pimentel, C. S. (Carla S.), Pinxten, R. (Rianne), Priedniece, I. (Ilze), Remes, V. (Vladimir), Richner, H. (Heinz), Robles, H. (Hugo), Rytkonen, S. (Seppo), Senar, J. C. (Juan Carlos), Seppanen, J. T. (Janne T.), da Silva, L. P. (Luis P.), Slagsvold, T. (Tore), Solonen, T. (Tapio), Sorace, A. (Alberto), Stenning, M. J. (Martyn J.), Torok, J. (Janos), Tryjanowski, P. (Piotr), van Noordwijk, A. J. (Arie J.), Walankiewicz, W. (Wieslaw), and Lambrechts, M. M. (Marcel M.)
Abstract: We studied the relationship between temperature and the coexistence of great tit Parus major and blue tit Cyanistes caeruleus, breeding in 75 study plots across Europe and North Africa. We expected an advance in laying date and a reduction in clutch size during warmer springs as a general response to climate warming and a delay in laying date and a reduction in clutch size during warmer winters due to density‐dependent effects. As expected, as spring temperature increases laying date advances and as winter temperature increases clutch size is reduced in both species. Density of great tit affected the relationship between winter temperature and laying date in great and blue tit. Specifically, as density of great tit increased and temperature in winter increased both species started to reproduce later. Density of blue tit affected the relationship between spring temperature and blue and great tit laying date. Thus, both species start to reproduce earlier with increasing spring temperature as density of blue tit increases, which was not an expected outcome, since we expected that increasing spring temperature should advance laying date, while increasing density should delay it cancelling each other out. Climate warming and its interaction with density affects clutch size of great tits but not of blue tits. As predicted, great tit clutch size is reduced more with density of blue tits as temperature in winter increases. The relationship between spring temperature and density on clutch size of great tits depends on whether the increase is in density of great tit or blue tit. Therefore, an increase in temperature negatively affected the coexistence of blue and great tits differently in both species. Thus, blue tit clutch size was unaffected by the interaction effect of density with temperature, while great tit clutch size was affected in multiple ways by these interactions terms.
Published: 2020

6. Is it interspecific information use or aggression between putative competitors that steers the selection of nest‐site characteristics?:a reply to Slagsvold and Wiebe

Author: Forsman, J. T. (Jukka T.), Seppänen, J.-T. (Janne-Tuomas), Mönkkönen, M. (Mikko), Thomson, R. L. (Robert L.), Kivelä, S. M. (Sami M.), Krams, I. (Indrikis), and Loukola, O. J. (Olli J.)
Subjects: nest-site selection, interspecific information use, interspecific competition
Abstract: A growing number of studies have demonstrated that heterospecific individuals with overlapping resource needs — putative competitors — can provide information to each other that improves the outcomes of decisions. Our studies using cavity nesting resident tits (information provider) and migratory flycatchers (Ficedula spp., information user) have shown that selective interspecific information use (SIIU) can result in flycatchers copying and rejecting the apparent nest‐site feature preferences of tits, depending on a perceivable fitness correlate (clutch size) of the tits. These, and other results on the interspecific information use, challenge the predictions of traditional theory of species coexistence. Recently, Slagsvold and Wiebe (2017) proposed an alternative hypothesis, the owner aggression hypothesis (OAH), to explain our results. Their main points of critique are: 1) a lack of evidence that flycatchers make visits into tit nests prior to nesting and 2) flycatchers do not have an ability to assess tit clutch size. According to Slagsvold and Wiebe, interspecific aggression between tits and flycatchers, not information use, is the mechanism explaining our results. In this reply we show that part of Slagsvold and Wiebe’s criticism is based on mischaracterization of the assumptions of SIIU, resulting in misinterpretations of our results. We also provide new evidence that flycatchers (mostly males) frequently visit tit nests prior to settlement and can acquire information about tit clutch size and thereby on the quality of the tutoring tit individual and its decisions. In short, as intriguing as OAH is, we suggest that 1) some of the assumptions are highly speculative and lack evidence, while 2) our earlier experiment (Loukola et al. 2013) has clearly demonstrated the importance of the visible clutch size of tits for flycatcher decisions. Therefore, SIIU can more parsimoniously than OAH explain the behaviour of flycatchers.
Published: 2018

7. Fecundity selection does not vary along a large geographical cline of trait means in a passerine bird

Author: Sarkiä, P.M., Adamík, P., Atemyev, A. V., Belskii, E., Both, Christiaan, Burês, S., Burgess, M.D., Bushuev, A.V., Forsman, JT, Grinkov, V., Hoffmann, D., Järvinen, A., Král, M., Krams, I., Lampe, H.M., Moreno Klemming, Juan, Mägi, M., Nord, A., Potti, Jaime, Ravussin, Pierre Alain, Sokolov, Leonid V., and Laaksonen, T.
Subjects: Ornamentation, Plumage, Phenotype, Coloration, Species variation, Fitness, Melanin
Abstract: Local environmental and ecological conditions are commonly expected to result in local adaptation, although there are few examples of variation in phenotypic selection across continent-wide spatial scales. We collected standardized data on selection with respect to the highly variable plumage coloration of pied flycatcher (Ficedula hypoleucaPall.) males from 17 populations across the species' breeding range. The observed selection on multiple male coloration traits via the annual number of fledged young was generally relatively weak. The main aim of the present study, however, was to examine whether the current directional selection estimates are associated with distance to the sympatric area with the collared flycatcher (Ficedula albicollisTemminck), a sister species with which the pied flycatcher is showing character displacement. This pattern was expected because plumage traits in male pied flycatchers are changing with the distance to these areas of sympatry. However, we did not find such a pattern in current selection on coloration. There were no associations between current directional selection on ornamentation and latitude or longitude either. Interestingly, current selection on coloration traits was not associated with the observed mean plumage traits of the populations. Thus, there do not appear to be geographical gradients in current directional fecundity selection on male plumage ornamentation. The results of the present study do not support the idea that constant patterns in directional fecundity selection would play a major role in the maintenance of coloration among populations in this species. By contrast, the tendency for relatively weak mosaic-like variation in selection among populations could reflect just a snapshot of temporally variable, potentially environment-dependent, selection, as suggested by other studies in this system. Such fine-grained variable selection coupled with gene flow could maintain extensive phenotypic variation across populations.
Published: 2015

8. Interspecific variation in the relationship between clutch size, laying date and intensity of urbanisation in four species of hole-nesting birds.

Author: VAUGOYEAU, M., ADRIAENSEN, F., ARTEMYEV, A., BAŃBURA, J., BARBA, E., BIARD, C., BLONDEL, J., BOUSLAMA, Z., BOUVIER, J-C., CAMPRODON, J., CECERE, F., CHARMANTIER, A., CHARTER, M., CICHOŃ, M., CUSIMANO, C., CZESZCZEWIK, D., DEMEYRIER, V., DOLIGEZ, B., DOUTRELANT, C., DUBIEC, A., EENS, M., EEVA, T., FAIVRE, B., FERNS, P. N., FORSMAN, J. T., GARCÍA-DEL-REY, E., GOLDSHTEIN, A., GOODENOUGH, A. E., GOSLER, A. G., GRÉGOIRE, A., GUSTAFSSON, L., HARNIST, I., HARTLEY, I. R., HEEB, P., HINSLEY, S. A., ISENMANN, P., JACOB, S., JUŠKAITIS, R., KORPIMÄKI, E., KRAMS, I., LAAKSONEN, T., LAMBRECHTS, M. M., LECLERCQ, B., LEHIKOINEN, E., LOUKOLA, O., LUNDBERG, A., MAINWARING, M. C., MÄND, R., MASSA, B., MAZGAJSKI, T. D., MERINO, S., MITRUS, C., MÖNKKÖNEN, M., MORIN, X., NAGER, R. G., NILSSON, J-Å., NILSSON, S. G., NORTE, A. C., ORELL, M., PERRET, P., PERRINS, C. M., PIMENTEL, C. S., PINXTEN, R., RICHNER, H., ROBLES, H., RYTKÖNEN, S., SENAR, J. C., SEPPÄNEN, J. T., DA SILVA, L. P., SLAGSVOLD, T., SOLONEN, T., SORACE, A., STENNING, M. J., TRYJANOWSKI, P., VON NUMERS, M., WALANKIEWICZ, W., MØLLER, A. P. and VAUGOYEAU, M., ADRIAENSEN, F., ARTEMYEV, A., BAŃBURA, J., BARBA, E., BIARD, C., BLONDEL, J., BOUSLAMA, Z., BOUVIER, J-C., CAMPRODON, J., CECERE, F., CHARMANTIER, A., CHARTER, M., CICHOŃ, M., CUSIMANO, C., CZESZCZEWIK, D., DEMEYRIER, V., DOLIGEZ, B., DOUTRELANT, C., DUBIEC, A., EENS, M., EEVA, T., FAIVRE, B., FERNS, P. N., FORSMAN, J. T., GARCÍA-DEL-REY, E., GOLDSHTEIN, A., GOODENOUGH, A. E., GOSLER, A. G., GRÉGOIRE, A., GUSTAFSSON, L., HARNIST, I., HARTLEY, I. R., HEEB, P., HINSLEY, S. A., ISENMANN, P., JACOB, S., JUŠKAITIS, R., KORPIMÄKI, E., KRAMS, I., LAAKSONEN, T., LAMBRECHTS, M. M., LECLERCQ, B., LEHIKOINEN, E., LOUKOLA, O., LUNDBERG, A., MAINWARING, M. C., MÄND, R., MASSA, B., MAZGAJSKI, T. D., MERINO, S., MITRUS, C., MÖNKKÖNEN, M., MORIN, X., NAGER, R. G., NILSSON, J-Å., NILSSON, S. G., NORTE, A. C., ORELL, M., PERRET, P., PERRINS, C. M., PIMENTEL, C. S., PINXTEN, R., RICHNER, H., ROBLES, H., RYTKÖNEN, S., SENAR, J. C., SEPPÄNEN, J. T., DA SILVA, L. P., SLAGSVOLD, T., SOLONEN, T., SORACE, A., STENNING, M. J., TRYJANOWSKI, P., VON NUMERS, M., WALANKIEWICZ, W., MØLLER, A. P.
Published: 2016

9. Variation in clutch size in relation to nest size in birds

Author: MØLLER, A. P., ADRIAENSEN, F., ARTEMYEV, A., BANBURA, J., BARBA, E., BIARD, C., BLONDEL, J., BOUSLAMA, Z., BOUVIER, J-C., CAMPRODON, J., CECERE, F., CHARMANTIER, A., CHARTER, M., CICHON, M., CUSIMANO, C., CZESZCZEWIK, D., DEMEYRIER, V., DOLIGEZ, B., DOUTRELANT, C., DUBIEC, A., EENS, M., EEVA, T., FAIVRE, B., FERNS, P.N., FORSMAN, J.T., GARCÍA-DEL-REY, E., GOLDSHTEIN, A., GOODENOUGH, A.E., GOSLER, A.G., GÓZDZ, I., GRÉGOIRE, A., GUSTAFSSON, L., HARTLEY, I.R., HEEB, P., HINSLEY, S.A., ISENMANN, P., JACOB, S., JÄRVINEN, A., JUSKAITIS, R., KORPIMÄKI, E., KRAMS, I., LAAKSONEN, T., LECLERCQ, B., LEHIKOINEN, E., LOUKOLA, E., LUNDBERG, A., MAINWARING, M.C., MÄND, R., MASSA, B., MAZGAJSKI, T.D., MERINO, S., MITRUS, C., MÖNKKÖNEN, M., MORALES-FERNAZ, J., MORIN, X., NAGER, R.G., NILSSON, J-A., NILSSON, S.G., NORTE, A.C., ORELL, M., PERRET, P., PIMENTEL, C.S., PINXTEN, R., PRIEDNIECE, I., QUIDOZ, M-C., REMES, V., RICHNER, H., ROBLES, H., RYTKÖNEN, S., SENAR, J.C., SEPPÄNEN, J.T., DA SILVA, L.P., SLAGSVOLD, T., SOLONEN, T., SORACE, A., STENNING, M.J., TÖRÖK, J., TRYJANOWSKI, P., VAN NOORDWIJK, A.J., VON NUMERS, M., WALANKIEWICZ, W., LAMBRECHTS, M.M.
Subjects: education
Published: 2014

10. Large-scale geographical variation in eggshell metal and calcium content in a passerine bird (Ficedula hypoleuca)

Author: Ruuskanen, S., Morales, J., Laaksonen, T., Moreno, J., Mateo, R., Belskii, E., Bushuev, A., Jarvinen, A., Kerimov, A., Krams, I., Morosinotto, C., Mand, R., Orell, M., Qvarnstrom, A., Slater, F.M., Siitari, H., Tilgar, V., Visser, M.E., Winkel, W., Zang, H., Eeva, T., Academy of Finland, Emil Aaltonen Foundation, Finnish Cultural Foundation, Kone Foundation, University of Turku, Netherlands Organization for Scientific Research, Russian Academy of Sciences, European Commission, Ministry of Education and Research (Estonia), Russian Foundation for Basic Research, Consejo Superior de Investigaciones Científicas (España), Ministerio de Ciencia e Innovación (España), Animal Ecology (AnE), and Animal Population Biology
Subjects: Avian clutch size, Pollution, Health, Toxicology and Mutagenesis, media_common.quotation_subject, Zoology, Arsenic, Egg Shell, biology.animal, Biomonitoring, Environmental Chemistry, Animals, Passeriformes, Eggshell, media_common, Pollutant, biology, Geography, Ecology, Ficedula, General Medicine, biology.organism_classification, Clutch Size, Passerine, Europe, Metals, international, Environmental Pollutants, Bioindicator, Environmental Monitoring
Abstract: Birds have been used as bioindicators of pollution, such as toxic metals. Levels of pollutants in eggs are especially interesting, as developing birds are more sensitive to detrimental effects of pollutants than adults. Only very few studies have monitored intraspecific, large-scale variation in metal pollution across a species' breeding range. We studied large-scale geographic variation in metal levels in the eggs of a small passerine, the pied flycatcher (Ficedula hypoleuca), sampled from 15 populations across Europe. We measured 10 eggshell elements (As, Cd, Cr, Cu, Ni, Pb, Zn, Se, Sr, and Ca) and several shell characteristics (mass, thickness, porosity, and color). We found significant variation among populations in eggshell metal levels for all metals except copper. Eggshell lead, zinc, and chromium levels decreased from central Europe to the north, in line with the gradient in pollution levels over Europe, thus suggesting that eggshell can be used as an indicator of pollution levels. Eggshell lead levels were also correlated with soil lead levels and pH. Most of the metals were not correlated with eggshell characteristics, with the exception of shell mass, or with breeding success, which may suggest that birds can cope well with the current background exposure levels across Europe., This study was financially supported by Turku University Foundation, Finnish Cultural Foundation, Kone Foundation (grants to SR) and Emil Aaltonen Foundation (a grant to TL), and Academy of Finland (a grant to TE, project 265859). EB was financed by Ural Branch of RAS (project 12-М-45-2072). Field work and analyses of eggshell structure and color were financed by project CGL2010-19233-C03-02 (Spanish Ministry of Science) to J. Moreno. J. Morales is supported by a contract “Junta de Ampliación de Estudios” funded by the Spanish Research Council-CSIC and the European Social Fund. Data collection in Moscow region was financially supported by RFBR (Russia, grants to AK and AB). Data collection in Estonia was financially supported by the Estonian Ministry of Education and Science (target-financing project number 0180004s09) and the European Regional Development Fund (Center of Excellence FIBIR). MEV was supported by a NWO-VICI grant.
Published: 2013

11. Sympatric divergence and clinal variation in multiple coloration traits of Ficedula flycatchers

Author: Laaksonen, T., Sirkia, P. M., Calhim, S., Brommer, J. E., Leskinen, P. K., Primmer, C. R., Adamik, P., Artemyev, A. V., Belskii, E., Both, C., Bures, S., Burgess, M. D., Doligez, Blandine, Forsman, J. T., Grinkov, V., Hoffmann, U., Ivankina, E., Kral, M., Krams, I., Lampe, H. M., Moreno, J., Maegi, M., Nord, A., Potti, J., Ravussin, P-A, Sokolov, L., Laaksonen, T., Sirkia, P. M., Calhim, S., Brommer, J. E., Leskinen, P. K., Primmer, C. R., Adamik, P., Artemyev, A. V., Belskii, E., Both, C., Bures, S., Burgess, M. D., Doligez, Blandine, Forsman, J. T., Grinkov, V., Hoffmann, U., Ivankina, E., Kral, M., Krams, I., Lampe, H. M., Moreno, J., Maegi, M., Nord, A., Potti, J., Ravussin, P-A, and Sokolov, L.
Abstract: Geographic variation in phenotypes plays a key role in fundamental evolutionary processes such as local adaptation, population differentiation and speciation, but the selective forces behind it are rarely known. We found support for the hypothesis that geographic variation in plumage traits of the pied flycatcher Ficedula hypoleuca is explained by character displacement with the collared flycatcher Ficedula albicollis in the contact zone. The plumage traits of the pied flycatcher differed strongly from the more conspicuous collared flycatcher in a sympatric area but increased in conspicuousness with increasing distance to there. Phenotypic differentiation (P-ST) was higher than that in neutral genetic markers (F-ST), and the effect of geographic distance remained when statistically controlling for neutral genetic differentiation. This suggests that a cline created by character displacement and gene flow explains phenotypic variation across the distribution of this species. The different plumage traits of the pied flycatcher are strongly to moderately correlated, indicating that they evolve non-independently from each other. The flycatchers provide an example of plumage patterns diverging in two species that differ in several aspects of appearance. The divergence in sympatry and convergence in allopatry in these birds provide a possibility to study the evolutionary mechanisms behind the highly divergent avian plumage patterns.
Published: 2015
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12. Clutch-size variation in Western Palaearctic secondary hole-nesting passerine birds in relation to nest box design

Author: Møller, A.P., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouslama, Z., Bouvier, J.-C., Camprodon, J., Cecere, F., Chaine, A., Charmantier, A., Charter, M., Cichoń, M., Cusimano, C., Czeszczewik, D., Doligez, B., Doutrelant, C., Dubiec, A., Eens, M., Eeva, T., Faivre, B., Ferns, P.N., Forsman, J.T., García-del-Rey, E., Goldshtein, A., Goodenough, A.E., Gosler, A.G., Góźdź, I., Grégoire, A., Gustafsson, L., Hartley, I.R., Heeb, P., Hinsley, S.A., Isenmann, P., Jacob, S., Järvinen, A., Juškaitis, R., Kania, W., Korpimäki, E., Krams, I., Laaksonen, T., Leclercq, B., Lehikoinen, E., Loukola, O., Lundberg, A., Mainwaring, M.C., Mänd, R., Massa, B., Mazgajski, T.D., Merino, S., Mitrus, C., Mönkkönen, M., Morales-Fernaz, J., Moreno, J., Morin, X., Nager, R.G., Nilsson, J.-Å., Nilsson, S.G., Norte, A.C., Orell, M., Perret, P., Perrins, C.M., Pimentel, C.S., Pinxten, R., Priedniece, I., Quidoz, M.-C., Remeš, V., Richner, H., Robles, H., Russell, A., Rytkönen, S., Senar, J.C., Seppänen, J.T., Pascoal da Silva, L., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M.J., Török, J., Tryjanowski, P., Van Noordwijk, A.J., von Numers, M., Walankiewicz, W., Lambrechts, M.M., Møller, A.P., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouslama, Z., Bouvier, J.-C., Camprodon, J., Cecere, F., Chaine, A., Charmantier, A., Charter, M., Cichoń, M., Cusimano, C., Czeszczewik, D., Doligez, B., Doutrelant, C., Dubiec, A., Eens, M., Eeva, T., Faivre, B., Ferns, P.N., Forsman, J.T., García-del-Rey, E., Goldshtein, A., Goodenough, A.E., Gosler, A.G., Góźdź, I., Grégoire, A., Gustafsson, L., Hartley, I.R., Heeb, P., Hinsley, S.A., Isenmann, P., Jacob, S., Järvinen, A., Juškaitis, R., Kania, W., Korpimäki, E., Krams, I., Laaksonen, T., Leclercq, B., Lehikoinen, E., Loukola, O., Lundberg, A., Mainwaring, M.C., Mänd, R., Massa, B., Mazgajski, T.D., Merino, S., Mitrus, C., Mönkkönen, M., Morales-Fernaz, J., Moreno, J., Morin, X., Nager, R.G., Nilsson, J.-Å., Nilsson, S.G., Norte, A.C., Orell, M., Perret, P., Perrins, C.M., Pimentel, C.S., Pinxten, R., Priedniece, I., Quidoz, M.-C., Remeš, V., Richner, H., Robles, H., Russell, A., Rytkönen, S., Senar, J.C., Seppänen, J.T., Pascoal da Silva, L., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M.J., Török, J., Tryjanowski, P., Van Noordwijk, A.J., von Numers, M., Walankiewicz, W., and Lambrechts, M.M.
Abstract: * Secondary hole-nesting birds that do not construct nest holes themselves and hence regularly breed in nest boxes constitute important model systems for field studies in many biological disciplines with hundreds of scientists and amateurs involved. Those research groups are spread over wide geographic areas that experience considerable variation in environmental conditions, and researchers provide nest boxes of varying designs that may inadvertently introduce spatial and temporal variation in reproductive parameters. * We quantified the relationship between mean clutch size and nest box size and material after controlling for a range of environmental variables in four of the most widely used model species in the Western Palaearctic: great tit Parus major, blue tit Cyanistes caeruleus, pied flycatcher Ficedula hypoleuca and collared flycatcher F. albicollis from 365 populations and 79 610 clutches. * Nest floor area and nest box material varied non-randomly across latitudes and longitudes, showing that scientists did not adopt a random box design. Clutch size increased with nest floor area in great tits, but not in blue tits and flycatchers. Clutch size of blue tits was larger in wooden than in concrete nest boxes. * These findings demonstrate that the size of nest boxes and material used to construct nest boxes can differentially affect clutch size in different species. The findings also suggest that the nest box design may affect not only focal species, but also indirectly other species through the effects of nest box design on productivity and therefore potentially population density and hence interspecific competition. [KEYWORDS: geographic location habitat latitude longitude nest box floor area nest box material], * Secondary hole-nesting birds that do not construct nest holes themselves and hence regularly breed in nest boxes constitute important model systems for field studies in many biological disciplines with hundreds of scientists and amateurs involved. Those research groups are spread over wide geographic areas that experience considerable variation in environmental conditions, and researchers provide nest boxes of varying designs that may inadvertently introduce spatial and temporal variation in reproductive parameters. * We quantified the relationship between mean clutch size and nest box size and material after controlling for a range of environmental variables in four of the most widely used model species in the Western Palaearctic: great tit Parus major, blue tit Cyanistes caeruleus, pied flycatcher Ficedula hypoleuca and collared flycatcher F. albicollis from 365 populations and 79 610 clutches. * Nest floor area and nest box material varied non-randomly across latitudes and longitudes, showing that scientists did not adopt a random box design. Clutch size increased with nest floor area in great tits, but not in blue tits and flycatchers. Clutch size of blue tits was larger in wooden than in concrete nest boxes. * These findings demonstrate that the size of nest boxes and material used to construct nest boxes can differentially affect clutch size in different species. The findings also suggest that the nest box design may affect not only focal species, but also indirectly other species through the effects of nest box design on productivity and therefore potentially population density and hence interspecific competition. [KEYWORDS: geographic location habitat latitude longitude nest box floor area nest box material]
Published: 2014

13. Large-scale geographical variation in eggshell heavy metal and calcium content in a passerine bird (Ficedula hypoleuca)

Author: Ruuskanen, S., Morales, J., Laaksonen, T., Moreno, J., Mateo, R., Belskii, E., Bushuev, A., Jarvinen, A., Kerimov, A., Krams, I., Morosinotto, C., Mand, R., Orell, M., Qvarnstrom, A., Slater, F.M., Siitari, H., Tilgar, V., Visser, M.E., Winkel, W., Zang, H., Eeva, T., Ruuskanen, S., Morales, J., Laaksonen, T., Moreno, J., Mateo, R., Belskii, E., Bushuev, A., Jarvinen, A., Kerimov, A., Krams, I., Morosinotto, C., Mand, R., Orell, M., Qvarnstrom, A., Slater, F.M., Siitari, H., Tilgar, V., Visser, M.E., Winkel, W., Zang, H., and Eeva, T.
Abstract: Birds have been used as bioindicators of pollution, such as toxic metals. Levels of pollutants in eggs are especially interesting, as developing birds are more sensitive to detrimental effects of pollutants than adults. Only very few studies have monitored intraspecific, large-scale variation in metal pollution across a species' breeding range. We studied large-scale geographic variation in metal levels in the eggs of a small passerine, the pied flycatcher (Ficedula hypoleuca), sampled from 15 populations across Europe. We measured 10 eggshell elements (As, Cd, Cr, Cu, Ni, Pb, Zn, Se, Sr, and Ca) and several shell characteristics (mass, thickness, porosity, and color). We found significant variation among populations in eggshell metal levels for all metals except copper. Eggshell lead, zinc, and chromium levels decreased from central Europe to the north, in line with the gradient in pollution levels over Europe, thus suggesting that eggshell can be used as an indicator of pollution levels. Eggshell lead levels were also correlated with soil lead levels and pH. Most of the metals were not correlated with eggshell characteristics, with the exception of shell mass, or with breeding success, which may suggest that birds can cope well with the current background exposure levels across Europe., Birds have been used as bioindicators of pollution, such as toxic metals. Levels of pollutants in eggs are especially interesting, as developing birds are more sensitive to detrimental effects of pollutants than adults. Only very few studies have monitored intraspecific, large-scale variation in metal pollution across a species' breeding range. We studied large-scale geographic variation in metal levels in the eggs of a small passerine, the pied flycatcher (Ficedula hypoleuca), sampled from 15 populations across Europe. We measured 10 eggshell elements (As, Cd, Cr, Cu, Ni, Pb, Zn, Se, Sr, and Ca) and several shell characteristics (mass, thickness, porosity, and color). We found significant variation among populations in eggshell metal levels for all metals except copper. Eggshell lead, zinc, and chromium levels decreased from central Europe to the north, in line with the gradient in pollution levels over Europe, thus suggesting that eggshell can be used as an indicator of pollution levels. Eggshell lead levels were also correlated with soil lead levels and pH. Most of the metals were not correlated with eggshell characteristics, with the exception of shell mass, or with breeding success, which may suggest that birds can cope well with the current background exposure levels across Europe.
Published: 2014

14. Variation in eggshell traits between geographically distant populations of pied flycatchers Ficedula hypoleuca

Author: Morales, J., Ruuskanen, S., Laaksonen, T., Mateo, R., Belskii, E., Eeva, T., Jarvinen, A., Kerimov, A., Korpimaki, E., Krams, I., Morosinotto, C., Mand, R., Orell, M., Qvarnstrom, A., Siitari, H., Slager, F.M., Tiglar, V., Visser, M.E., Winkel, W., Zang, H., Moreno, J., Morales, J., Ruuskanen, S., Laaksonen, T., Mateo, R., Belskii, E., Eeva, T., Jarvinen, A., Kerimov, A., Korpimaki, E., Krams, I., Morosinotto, C., Mand, R., Orell, M., Qvarnstrom, A., Siitari, H., Slager, F.M., Tiglar, V., Visser, M.E., Winkel, W., Zang, H., and Moreno, J.
Abstract: The expression and impact of maternal effects may vary greatly between populations and environments. However, little is known about large-scale geographical patterns of variation in maternal deposition to eggs. In birds, as in other oviparous animals, the outermost maternal component of an egg is the shell, which protects the embryo, provides essential mineral resources and allows its interaction with the environment in the form of gas exchange. In this study, we explored variation of eggshell traits (mass, thickness, pore density and pigmentation) across 15 pied flycatcher populations at a large geographic scale. We found significant between-population variation in all eggshell traits, except in pore density, suggesting spatial variation in their adaptive benefits or in the females’ physiological limitations during egg laying. Between- population variation in shell structure was not due to geographic location (latitude and longitude) or habitat type. However, eggshells were thicker in populations that experienced higher ambient temperature during egg laying. This could be a result of maternal resource allocation to the shell being constrained under low temperatures or of an adaptation to reduce egg water loss under high temperatures. We also found that eggshell colour intensity was positively associated with biliverdin pigment concentration, shell thickness and pore density. To conclude, our findings reveal large- scale between-population variation of eggshell traits, although we found little environmental dependency in their expression. Our findings call for further studies that explore other environmental factors (e.g. calcium availability and pollution levels) and social factors like sexual selection intensity that may account for differences in shell structure between populations., The expression and impact of maternal effects may vary greatly between populations and environments. However, little is known about large-scale geographical patterns of variation in maternal deposition to eggs. In birds, as in other oviparous animals, the outermost maternal component of an egg is the shell, which protects the embryo, provides essential mineral resources and allows its interaction with the environment in the form of gas exchange. In this study, we explored variation of eggshell traits (mass, thickness, pore density and pigmentation) across 15 pied flycatcher populations at a large geographic scale. We found significant between-population variation in all eggshell traits, except in pore density, suggesting spatial variation in their adaptive benefits or in the females’ physiological limitations during egg laying. Between- population variation in shell structure was not due to geographic location (latitude and longitude) or habitat type. However, eggshells were thicker in populations that experienced higher ambient temperature during egg laying. This could be a result of maternal resource allocation to the shell being constrained under low temperatures or of an adaptation to reduce egg water loss under high temperatures. We also found that eggshell colour intensity was positively associated with biliverdin pigment concentration, shell thickness and pore density. To conclude, our findings reveal large- scale between-population variation of eggshell traits, although we found little environmental dependency in their expression. Our findings call for further studies that explore other environmental factors (e.g. calcium availability and pollution levels) and social factors like sexual selection intensity that may account for differences in shell structure between populations.
Published: 2013

15. Candidate genes for colour and vision exhibit signals of selection across the pied flycatcher (Ficedula hypoleuca) breeding range

Author: Lehtonen, P.K., Laaksonen, T., Artemyev, A.V., Belskii, E., Berg, P.R., Both, Christiaan, Buggiotti, L., Burês, S., Burgess, M.D., Bushuev, A.V., Krams, I., Moreno Klemming, Juan, Mägi, Marko, Nord, A., Potti, Jaime, Ravussin, Pierre Alain, Sirkiä, P. M., Sætre, G.-P., Winkel, Wolfgang, Primmer, C.R., Lehtonen, P.K., Laaksonen, T., Artemyev, A.V., Belskii, E., Berg, P.R., Both, Christiaan, Buggiotti, L., Burês, S., Burgess, M.D., Bushuev, A.V., Krams, I., Moreno Klemming, Juan, Mägi, Marko, Nord, A., Potti, Jaime, Ravussin, Pierre Alain, Sirkiä, P. M., Sætre, G.-P., Winkel, Wolfgang, and Primmer, C.R.
Abstract: The role of natural selection in shaping adaptive trait differentiation in natural populations has long been recognized. Determining its molecular basis, however, remains a challenge. Here, we search for signals of selection in candidate genes for colour and its perception in a passerine bird. Pied flycatcher plumage varies geographically in both its structural and pigment-based properties. Both characteristics appear to be shaped by selection. A single-locus outlier test revealed 2 of 14 loci to show significantly elevated signals of divergence. The first of these, the follistatin gene, is expressed in the developing feather bud and is found in pathways with genes that determine the structure of feathers and may thus be important in generating variation in structural colouration. The second is a gene potentially underlying the ability to detect this variation: SWS1 opsin. These two loci were most differentiated in two Spanish pied flycatcher populations, which are also among the populations that have the highest UV reflectance. The follistatin and SWS1 opsin genes thus provide strong candidates for future investigations on the molecular basis of adaptively significant traits and their co-evolution. © 2012 Macmillan Publishers Limited All rights reserved.
Published: 2012

16. Geographical variation in egg mass and egg content in a passerine bird

Author: Ruuskanen, S., Siitari, H., Eeva, T., Belskii, E., Järvinen, A., Kerimov, A., Krams, I., Moreno, J., Morosinotto, C., Mänd, R., Möstl, E., Orell, M., Qvarnström, A., Salminen, J.P., Slater, F.M., Tilgar, V., Visser, M.E., Winkel, W., Zang, H., Laaksonen, T., Ruuskanen, S., Siitari, H., Eeva, T., Belskii, E., Järvinen, A., Kerimov, A., Krams, I., Moreno, J., Morosinotto, C., Mänd, R., Möstl, E., Orell, M., Qvarnström, A., Salminen, J.P., Slater, F.M., Tilgar, V., Visser, M.E., Winkel, W., Zang, H., and Laaksonen, T.
Abstract: Reproductive, phenotypic and life-history traits in many animal and plant taxa show geographic variation, indicating spatial variation in selection regimes. Maternal deposition to avian eggs, such as hormones, antibodies and antioxidants, critically affect development of the offspring, with long-lasting effects on the phenotype and fitness. Little is however known about large-scale geographical patterns of variation in maternal deposition to eggs. We studied geographical variation in egg components of a passerine bird, the pied flycatcher (Ficedula hypoleuca), by collecting samples from 16 populations and measuring egg and yolk mass, albumen lysozyme activity, yolk immunoglobulins, yolk androgens and yolk total carotenoids. We found significant variation among populations in most egg components, but ca. 90% of the variation was among individuals within populations. Population however explained 40% of the variation in carotenoid levels. In contrast to our hypothesis, we found geographical trends only in carotenoids, but not in any of the other egg components. Our results thus suggest high within-population variation and leave little scope for local adaptation and genetic differentiation in deposition of different egg components. The role of these maternally-derived resources in evolutionary change should be further investigated., Reproductive, phenotypic and life-history traits in many animal and plant taxa show geographic variation, indicating spatial variation in selection regimes. Maternal deposition to avian eggs, such as hormones, antibodies and antioxidants, critically affect development of the offspring, with long-lasting effects on the phenotype and fitness. Little is however known about large-scale geographical patterns of variation in maternal deposition to eggs. We studied geographical variation in egg components of a passerine bird, the pied flycatcher (Ficedula hypoleuca), by collecting samples from 16 populations and measuring egg and yolk mass, albumen lysozyme activity, yolk immunoglobulins, yolk androgens and yolk total carotenoids. We found significant variation among populations in most egg components, but ca. 90% of the variation was among individuals within populations. Population however explained 40% of the variation in carotenoid levels. In contrast to our hypothesis, we found geographical trends only in carotenoids, but not in any of the other egg components. Our results thus suggest high within-population variation and leave little scope for local adaptation and genetic differentiation in deposition of different egg components. The role of these maternally-derived resources in evolutionary change should be further investigated.
Published: 2011

17. Geographical trends in the yolk carotenoid composition of the pied flycatcher (Ficedula hypoleuca)

Author: Eeva, T., Ruuskanen, S., Salminen, J.P., Belskii, E., Jarvinen, A., Kerimov, A., Korpimäki, E., Krams, I., Moreno, J., Morosinotto, C., Mänd, R., Orell, M., Qvarnström, A., Siitari, H., Slater, F.M., Tilgar, V., Visser, M.E., Winkel, W., Zang, H., Laaksonen, T., Eeva, T., Ruuskanen, S., Salminen, J.P., Belskii, E., Jarvinen, A., Kerimov, A., Korpimäki, E., Krams, I., Moreno, J., Morosinotto, C., Mänd, R., Orell, M., Qvarnström, A., Siitari, H., Slater, F.M., Tilgar, V., Visser, M.E., Winkel, W., Zang, H., and Laaksonen, T.
Abstract: Carotenoids in the egg yolks of birds are considered to be important antioxidants and immune stimulants during the rapid growth of embryos. Yolk carotenoid composition is strongly affected by the carotenoid composition of the female’s diet at the time of egg formation. Spatial and temporal differences in carotenoid availability may thus be reflected in yolk concentrations. To assess whether yolk carotenoid concentrations or carotenoid profiles show any large-scale geographical trends or differences among habitats, we collected yolk samples from 16 European populations of the pied flycatcher, Ficedula hypoleuca.Wefound that the concentrations and proportions of lutein and some other xanthophylls in the egg yolks decreased from Central Europe northwards. The most southern population (which is also the one found at the highest altitude) also showed relatively low carotenoid levels. Concentrations of b-carotene and zeaxanthin did not show any obvious geographical gradients. Egg yolks also contained proportionally more lutein and other xanthophylls in deciduous than in mixed or coniferous habitats. We suggest that latitudinal gradients in lutein and xanthophylls reflect the lower availability of lutein-rich food items in the northern F. hypoleuca populations and in montane southern populations, which start egg-laying earlier relative to tree phenology than the Central European populations. Similarly, among-habitat variation is likely to reflect the better availability of lutein-rich food in deciduous forests. Our study is the first to indicate that the concentration and profile of yolk carotenoids may show large-scale spatial variation among populations in different parts of the species’ geographical range. Further studies are needed to test the fitness effects of this geographical variation., Carotenoids in the egg yolks of birds are considered to be important antioxidants and immune stimulants during the rapid growth of embryos. Yolk carotenoid composition is strongly affected by the carotenoid composition of the female’s diet at the time of egg formation. Spatial and temporal differences in carotenoid availability may thus be reflected in yolk concentrations. To assess whether yolk carotenoid concentrations or carotenoid profiles show any large-scale geographical trends or differences among habitats, we collected yolk samples from 16 European populations of the pied flycatcher, Ficedula hypoleuca.Wefound that the concentrations and proportions of lutein and some other xanthophylls in the egg yolks decreased from Central Europe northwards. The most southern population (which is also the one found at the highest altitude) also showed relatively low carotenoid levels. Concentrations of b-carotene and zeaxanthin did not show any obvious geographical gradients. Egg yolks also contained proportionally more lutein and other xanthophylls in deciduous than in mixed or coniferous habitats. We suggest that latitudinal gradients in lutein and xanthophylls reflect the lower availability of lutein-rich food items in the northern F. hypoleuca populations and in montane southern populations, which start egg-laying earlier relative to tree phenology than the Central European populations. Similarly, among-habitat variation is likely to reflect the better availability of lutein-rich food in deciduous forests. Our study is the first to indicate that the concentration and profile of yolk carotenoids may show large-scale spatial variation among populations in different parts of the species’ geographical range. Further studies are needed to test the fitness effects of this geographical variation.
Published: 2011

18. Geographic patterns of genetic differentiation and plumage colour variation are different in the pied flycatcher (Ficedula hypoleuca)

Author: Lehtonen, P.K., Laaksonen, T., Artemyev, A.V., Belskii, E., Both, Christiaan, Burês, S., Bushuev, A.V., Krams, I., Moreno Klemming, Juan, Mägi, Marko, Nord, A., Potti, Jaime, Ravussin, Pierre Alain, Sirkiä, P. M., SÆtre, G.-P., Primmer, C.R., Lehtonen, P.K., Laaksonen, T., Artemyev, A.V., Belskii, E., Both, Christiaan, Burês, S., Bushuev, A.V., Krams, I., Moreno Klemming, Juan, Mägi, Marko, Nord, A., Potti, Jaime, Ravussin, Pierre Alain, Sirkiä, P. M., SÆtre, G.-P., and Primmer, C.R.
Abstract: The pied flycatcher is one of the most phenotypically variable bird species in Europe. The geographic variation in phenotypes has often been attributed to spatial variation in selection regimes that is associated with the presence or absence of the congeneric collared flycatcher. Spatial variation in phenotypes could however also be generated by spatially restricted gene flow and genetic drift. We examined the genetic population structure of pied flycatchers across the breeding range and applied the phenotypic QST (P ST)-FST approach to detect indirect signals of divergent selection on dorsal plumage colouration in pied flycatcher males. Allelic frequencies at neutral markers were found to significantly differ among populations breeding in central and southern Europe whereas northerly breeding pied flycatchers were found to be one apparently panmictic group of individuals. Pairwise differences between phenotypic (PST) and neutral genetic distances (FST) were positively correlated after removing the most differentiated Spanish and Swiss populations from the analysis, suggesting that genetic drift may have contributed to the observed phenotypic differentiation in some parts of the pied flycatcher breeding range. Differentiation in dorsal plumage colouration however greatly exceeded that observed at neutral genetic markers, which indicates that the observed pattern of phenotypic differentiation is unlikely to be solely maintained by restricted gene flow and genetic drift. © 2009 Blackwell Publishing Ltd.
Published: 2009

19. Cross-cultural variation in women's preferences for cues to sex- and stress-hormones in the male face

Author: Moore, F. R., primary, Coetzee, V., additional, Contreras-Garduño, J., additional, Debruine, L. M., additional, Kleisner, K., additional, Krams, I., additional, Marcinkowska, U., additional, Nord, A., additional, Perrett, D. I., additional, Rantala, M. J., additional, Schaum, N., additional, and Suzuki, T. N., additional
Published: 2013
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20. Genetic and phenotypic relationships between immune defense, melanism and life-history traits at different temperatures and sexes in Tenebrio molitor

Author: Prokkola, J, primary, Roff, D, additional, Kärkkäinen, T, additional, Krams, I, additional, and Rantala, M J, additional
Published: 2013
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21. Candidate genes for colour and vision exhibit signals of selection across the pied flycatcher (Ficedula hypoleuca) breeding range

Author: Lehtonen, P K, primary, Laaksonen, T, additional, Artemyev, A V, additional, Belskii, E, additional, Berg, P R, additional, Both, C, additional, Buggiotti, L, additional, Bureš, S, additional, Burgess, M D, additional, Bushuev, A V, additional, Krams, I, additional, Moreno, J, additional, Mägi, M, additional, Nord, A, additional, Potti, J, additional, Ravussin, P-A, additional, Sirkiä, P M, additional, Sætre, G-P, additional, Winkel, W, additional, and Primmer, C R, additional
Published: 2011
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22. Female Choice Reveals Terminal Investment in Male Mealworm Beetles,Tenebrio molitor, after a Repeated Activation of the Immune System

Author: Krams, I, primary, Daukšte, J, additional, Kivleniece, I, additional, Krama, T, additional, Rantala, MJ, additional, Ramey, G, additional, and Šauša, L, additional
Published: 2011
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23. Perch selection by singing chaffinches: a better view of surroundings and the risk of predation

Author: Krams, I., primary
Published: 2001
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24. Candidate genes for colour and vision exhibit signals of selection across the pied flycatcher (Ficedula hypoleuca) breeding range.

Author: Lehtonen, P K, Laaksonen, T, Artemyev, A V, Belskii, E, Berg, P R, Both, C, Buggiotti, L, Bureš, S, Burgess, M D, Bushuev, A V, Krams, I, Moreno, J, Mägi, M, Nord, A, Potti, J, Ravussin, P-A, Sirkiä, P M, Sætre, G-P, Winkel, W, and Primmer, C R
Subjects: FLYCATCHERS, HABITAT selection, FOLLISTATIN, PIED flycatcher, PASSERIFORMES, BIOLOGICAL invasions, COLOR of birds, PHYSIOLOGY, REPRODUCTION
Abstract: The role of natural selection in shaping adaptive trait differentiation in natural populations has long been recognized. Determining its molecular basis, however, remains a challenge. Here, we search for signals of selection in candidate genes for colour and its perception in a passerine bird. Pied flycatcher plumage varies geographically in both its structural and pigment-based properties. Both characteristics appear to be shaped by selection. A single-locus outlier test revealed 2 of 14 loci to show significantly elevated signals of divergence. The first of these, the follistatin gene, is expressed in the developing feather bud and is found in pathways with genes that determine the structure of feathers and may thus be important in generating variation in structural colouration. The second is a gene potentially underlying the ability to detect this variation: SWS1 opsin. These two loci were most differentiated in two Spanish pied flycatcher populations, which are also among the populations that have the highest UV reflectance. The follistatin and SWS1 opsin genes thus provide strong candidates for future investigations on the molecular basis of adaptively significant traits and their co-evolution. [ABSTRACT FROM AUTHOR]
Published: 2012
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25. Female choice reveals terminal investment in male mealworm beetles, Tenebrio molitor, after a repeated activation of the immune system.

Author: Krams, I., Daukšte, J., Kivleniece, I., Krama, T., Rantala, M. J., Ramey, G., and Šauša, L.
Subjects: *BEETLES, *TENEBRIO molitor, *IMMUNE system, *NYLON, *SEXUAL attraction, *INSECT locomotion
Abstract: The article focuses on a research conducted in order to evaluate the impact of immunological challenge via a nylon implant in affecting sexual attractiveness of male mealworm beetles, Tenebrio molitor towards females. It discusses the reduction sexual attractiveness and locomotor activity of males after first immunological challenge. The study revealed the need of the terminal investment on sexual signaling for recovery of immune system and locomotor activity.
Published: 2011
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26. Variation in clutch size in relation to nest size in birds

Author: Blandine Doligez, Ian R. Hartley, Indrikis Krams, Marcel M. Lambrechts, Tore Slagsvold, Francesco Cecere, Tapio Solonen, Sven G. Nilsson, Peter N. Ferns, Vladimír Remeš, Jean Charles Bouvier, Paul Isenmann, Luís P. da Silva, Martyn J. Stenning, Rimvydas Juškaitis, Anna Dubiec, Eduardo Garcia-del-Rey, Jan-Åke Nilsson, Anders Pape Møller, Zihad Bouslama, Arne Lundberg, Cezary Mitrus, Esa Lehikoinen, Jacques Blondel, Carla S. Pimentel, Antero Järvinen, Arie J. van Noordwijk, Toni Laaksonen, Janne T. Seppänen, Wiesław Walankiewicz, Tomasz D. Mazgajski, Jukka T. Forsman, Frank Adriaensen, János Török, Marcel Eens, Tapio Eeva, Hugo Robles, Rianne Pinxten, Juan Carlos Senar, Emilio Barba, Anne Charmantier, Xavier Morin, Clotilde Biard, Camillo Cusimano, Ana Cláudia Norte, Seppo Rytkönen, Judith Morales-Fernaz, Piotr Tryjanowski, Shelley A. Hinsley, Ruedi G. Nager, Mikael von Numers, Lars Gustafsson, Aya Goldshtein, Anne E. Goodenough, Andrew G. Gosler, Jerzy Bańbura, Alberto Sorace, Motti Charter, Virginie Demeyrier, Raivo Mänd, Philippe Perret, Marie Claude Quidoz, Mark C. Mainwaring, Bruno Massa, Staffan Jacob, Bruno Faivre, Santiago Merino, Jordi Camprodon, Markku Orell, Alexandr Artemyev, Arnaud Grégoire, Claire Doutrelant, Dorota Czeszczewik, Bernard Leclercq, Heinz Richner, Iga Góźdź, Philipp Heeb, Erkki Korpimäki, Ilze Priedniece, Mariusz Cichoń, Mikko Mönkkönen, Olli J. Loukola, Ecologie Systématique et Evolution ( ESE ), Université Paris-Sud - Paris 11 ( UP11 ) -AgroParisTech-Centre National de la Recherche Scientifique ( CNRS ), Evolutionary Ecology Group, University of Antwerp ( UA ), Institute of Biology, Russian Academy of Sciences [Moscow] ( RAS ), Department of Experimental Zoology & Evolutionary Biology, Łódź University of Technology, Terrestrial Vertebrates Research Unit 'Cavanilles', University of Valencia-Institute of Biodiversity and Evolutionary Biology, Ecologie et évolution, École normale supérieure - Paris ( ENS Paris ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Centre d’Ecologie Fonctionnelle et Evolutive ( CEFE ), Institut de Recherche pour le Développement ( IRD [France-Sud] ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Montpellier ( UM ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -École pratique des hautes études ( EPHE ) -Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -Université Paul-Valéry - Montpellier 3 ( UM3 ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ), Research Laboratory 'Ecology of Terrestrial and Aquatic Systems', University Badji Mokhtar, Plantes et Systèmes de Culture Horticoles [Avignon], Institut National de la Recherche Agronomique ( INRA ), Biodiversity Department, Forest Technology Center of Catalonia, (Adresse privée), Society for the Protection of Nature, University of Lausanne, University of Haifa [Haifa], Institute of Environmental Sciences, Jagiellonian University [Krakow] ( UJ ), Stazione Inanellamento c/o Dipartimento SEN-FIMIZO, Università di Palermo, Department of Zoology, Siedlce University of Natural Sciences and Humanities, Laboratoire de Biométrie et Biologie Evolutive ( LBBE ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique ( Inria ) -Centre National de la Recherche Scientifique ( CNRS ), Museum and Institute of Zoology, Polska Akademia Nauk ( PAN ), Department of Biology (Ethology), Section of Ecology, University of Turku, Biogéosciences [Dijon] ( BGS ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique ( CNRS ), School of Bioscience, Cardiff University, Department of Biology, University of Oulu, Departamento de Ecología, Universidad de la Laguna, Department of Natural and Social Sciences, University of Gloucestershire, Edward Grey Institute of Field Ornithology-Institute of Human Sciences, Evolutionary Biology Centre, Uppsala University, Lancaster Environment Centre, Lancaster University, Laboratoire Evolution et Diversité Biologique, UMR 5174 CNRS, Université de Toulouse, Centre for Ecology & Hydrology ( CEH ), Natural Environment Research Council ( NERC ), Kilpisjarvi Biological Station, Institute of Ecology of Nature Research Centre, Institute of Ecology & Earth Sciences, University of Tartu, Departamento de Ecología Evolutiva, Consejo Superior de Investigaciones Científicas [Spain] ( CSIC ) -Museo Nacional de Ciencias Naturales, Rzeszow University, Department of Biological and Environmental Sciences, University of Jyväskylä, Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Animal Ecology, Lund University [Lund], Department of Biology, Biodiversity, Lund University, Lund, Sweden, Department of Life Sciences, University of Coimbra [Portugal] ( UC ), Centro de Estudos Florestais, Instituto Superior de Agronomia-University of Lisbon, Latvian Fund for Nature, Laboratory of Ornithology, Palacky University, Institute of Ecology & Evolution ( IEE ), University of Bern, Evolutionary Ecology Group ( GIBE ), University of A Coruña ( UDC ), Unidad Asociada CSIC de Ecología Evolutiva y de la Conducta, Nat-Museu de Ciències Naturals de Barcelona, Department of Biosciences, University of Oslo ( UiO ), Luontotutkimus Solonen Oy, SROPU, School of Life Sciences, University of Sussex, Behavioral Ecology Group, Eötvös Loránd University ( ELTE ), Institute of Zoology, Poznan University of Life Sciences, Netherlands Institute of Ecology, Netherlands Institute of Ecology - NIOO-KNAW (NETHERLANDS), Environmental and Marine Biology, Åbo Academy University, Ecologie Systématique et Evolution (ESE), Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), University of Antwerp (UA), Russian Academy of Sciences [Moscow] (RAS), Laboratoire Ecologie et évolution, Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-École normale supérieure - Paris (ENS Paris), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UM3)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut National de la Recherche Agronomique (INRA), Université de Lausanne (UNIL), Jagiellonian University [Krakow] (UJ), Evolution, adaptation et comportement, Département écologie évolutive [LBBE], Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Polska Akademia Nauk (PAN), Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Universidad de La Laguna [Tenerife - SP] (ULL), Evolution et Diversité Biologique (EDB), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Centre for Ecology & Hydrology (CEH), Natural Environment Research Council (NERC), Consejo Superior de Investigaciones Científicas [Spain] (CSIC)-Museo Nacional de Ciencias Naturales (MNCN), University of Coimbra [Portugal] (UC), Institute of Ecology & Evolution (IEE), Evolutionary Ecology Group (GIBE), University of A Coruña (UDC), Department of Biosciences [Oslo], Faculty of Mathematics and Natural Sciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO), Eötvös Loránd University (ELTE), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Unité de recherche Plantes et Systèmes de Culture Horticoles (PSH), Centre de Ciència i Tecnologia Forestal de Catalunya (CTFC), Université de Lausanne = University of Lausanne (UNIL), Uniwersytet Jagielloński w Krakowie = Jagiellonian University (UJ), Università degli studi di Palermo - University of Palermo, Polska Akademia Nauk = Polish Academy of Sciences (PAN), Biogéosciences [UMR 6282] (BGS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), School of Biosciences [Cardiff], Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Museo Nacional de Ciencias Naturales [Madrid] (MNCN), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Department of Biological and Environmental Science [Jyväskylä Univ] (JYU), University of Jyväskylä (JYU), Universidade de Lisboa = University of Lisbon (ULISBOA)-Instituto Superior de Agronomia [Lisboa] (ISA), Universidade de Lisboa = University of Lisbon (ULISBOA), Palacky University Olomouc, Museu de Ciències Naturals de Barcelona, Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Paul-Valéry - Montpellier 3 (UM3), Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Kilpisjärvi Biological Station, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD [France-Sud]), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Museo Nacional de Ciencias Naturales (MNCN), Instituto Superior de Agronomia-Universidade de Lisboa (ULISBOA), Animal Ecology (AnE), Møller, A.P., Adriaensen, F., Artemyev, A., Bańbura, J., Barba, E., Biard, C., Blondel, J., Bouslama, Z., Bouvier, J.-C., Camprodon, J., Cecere, F., Charmantier, A., Charter, M., Cichoń, M., Cusimano, C., Czeszczewik, D., Demeyrier, V., Doligez, B., Doutrelant, C., Dubiec, A., Eens, M., Eeva, T., Faivre, B., Ferns, P.N., Forsman, J.T., García-del-Rey, E., Goldshtein, A., Goodenough, A.E., Gosler, A.G., Góźdź, I., Grégoire, A., Gustafsson, L., Hartley, I.R., Heeb, P., Hinsley, S.A., Isenmann, P., Jacob, S., Järvinen, A., Juškaitis, R., Korpimäki, E., Krams, I., Laaksonen, T., Leclercq, B., Lehikoinen, E., Loukola, O., Lundberg, A., Mainwaring, M.C., Mänd, R., Massa, B., Mazgajski, T.D., Merino, S., Mitrus, C., Mönkkönen, M., Morales-Fernaz, J., Morin, X., Nager, R.G., Nilsson, J.-Å., Nilsson, S.G., Norte, A.C., Orell, M., Perret, P., Pimentel, C.S., Pinxten, R., Priedniece, I., Quidoz, M.-C., Remeš, V., Richner, H., Robles, H., Rytkönen, S., Senar, J.C., Seppänen, J.T., da Silva, L.P., Slagsvold, T., Solonen, T., Sorace, A., Stenning, M.J., Török, J., Tryjanowski, P., van Noordwijk, A.J., von Numers, M., Walankiewicz, W., and Lambrechts, M.M.
Subjects: BREEDING SUCCESS, Avian clutch size, Biodiversité et Ecologie, SEXUAL SELECTION, Predation, natural holes, Nest, TITS PARUS-MAJOR, BLUE TITS, QL_671, Original Research, GE, Ecology, hole nesting, STURNUS-VULGARIS, FLYCATCHERS FICEDULA, Chemistry, reaction norm, Sexual selection, international, 1181 Ecology, evolutionary biology, Hole nesting, Hole nesting, natural holes, nest boxes, reaction norm, nest boxes, education, ta1172, Zoology, Biology, Intraspecific competition, Ecology and Environment, Biodiversity and Ecology, Clutch, Nest box, Ecology, Evolution, Behavior and Systematics, Nature and Landscape Conservation, Ekologi, [ SDE.BE ] Environmental Sciences/Biodiversity and Ecology, Interspecific competition, PIED FLYCATCHERS, PASSERINE BIRDS, Settore AGR/11 - Entomologia Generale E Applicata, ta1181, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, GREAT TITS, THERMAL CONDITIONS
Abstract: © 2014 The Authors. Nests are structures built to support and protect eggs and/or offspring from predators, parasites, and adverse weather conditions. Nests are mainly constructed prior to egg laying, meaning that parent birds must make decisions about nest site choice and nest building behavior before the start of egg-laying. Parent birds should be selected to choose nest sites and to build optimally sized nests, yet our current understanding of clutch size-nest size relationships is limited to small-scale studies performed over short time periods. Here, we quantified the relationship between clutch size and nest size, using an exhaustive database of 116 slope estimates based on 17,472 nests of 21 species of hole and non-hole-nesting birds. There was a significant, positive relationship between clutch size and the base area of the nest box or the nest, and this relationship did not differ significantly between open nesting and hole-nesting species. The slope of the relationship showed significant intraspecific and interspecific heterogeneity among four species of secondary hole-nesting species, but also among all 116 slope estimates. The estimated relationship between clutch size and nest box base area in study sites with more than a single size of nest box was not significantly different from the relationship using studies with only a single size of nest box. The slope of the relationship between clutch size and nest base area in different species of birds was significantly negatively related to minimum base area, and less so to maximum base area in a given study. These findings are consistent with the hypothesis that bird species have a general reaction norm reflecting the relationship between nest size and clutch size. Further, they suggest that scientists may influence the clutch size decisions of hole-nesting birds through the provisioning of nest boxes of varying sizes.
Published: 2014
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27. Interspecific variation in the relationship between clutch size, laying date and intensity of urbanization in four species of hole-nesting birds

Author: Tomasz D. Mazgajski, Shelley A. Hinsley, Piotr Tryjanowski, Paul Isenmann, Virginie Demeyrier, Xavier Morin, Jordi Camprodon, Toni Laaksonen, Martyn J. Stenning, Philipp Heeb, Francesco Cecere, Erkki Korpimäki, Jan-Åke Nilsson, Mariusz Cichoń, Clotilde Biard, Ana Cláudia Norte, Mikko Mönkkönen, Indrikis Krams, Jacques Blondel, Janne T. Seppänen, Wiesław Walankiewicz, Christopher M. Perrins, Bruno Massa, Marcel M. Lambrechts, Arnaud Grégoire, Rianne Pinxten, Jean-Charles Bouvier, Mikael von Numers, Lars Gustafsson, Bruno Faivre, Claire Doutrelant, Hugo Robles, Luís P. da Silva, Tapio Solonen, Santiago Merino, Anne Charmantier, Anna Dubiec, Anders Pape Møller, Dorota Czeszczewik, Markku Orell, Bernard Leclercq, Alexandr Artemyev, Motti Charter, Philippe Perret, Seppo Rytkönen, Olli J. Loukola, Mark C. Mainwaring, Juan Carlos Senar, Tore Slagsvold, Zihad Bouslama, Raivo Mänd, Aya Goldshtein, Heinz Richner, Staffan Jacob, Jerzy Bańbura, Alberto Sorace, Ian R. Hartley, Jukka T. Forsman, Marie Vaugoyeau, Camillo Cusimano, Emilio Barba, Ruedi G. Nager, Marcel Eens, Iga Harnist, Rimvydas Juškaitis, Peter N. Ferns, Frank Adriaensen, Esa Lehikoinen, Sven G. Nilsson, Blandine Doligez, Cezary Mitrus, Anne E. Goodenough, Eduardo Garcia-del-Rey, Arne Lundberg, Andrew G. Gosler, Tapio Eeva, Carla S. Pimentel, Ecologie Systématique et Evolution (ESE), Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), Evolutionary Ecology Group, University of Antwerp (UA), Institute of Biology, Karelian Research Center of the Russian Academy of Science (KarRC RAS ), Department of Experimental Zoology & Evolutionary Biology, Łódź University of Technology, Terrestrial Vertebrates Research Unit 'Cavanilles', University of Valencia-Institute of Biodiversity and Evolutionary Biology, Institut d'écologie et des sciences de l'environnement de Paris (iEES), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Ecology of Terrestrial and Aquatic Systems [Annaba], Badji Mokhtar-Annaba University, Unité de recherche Plantes et Systèmes de Culture Horticoles (PSH), Institut National de la Recherche Agronomique (INRA), Àrea de Biodiversitat - Grup de Biologia de la Conservació, Centre de Ciència i Tecnologia Forestal de Catalunya (CTFC), University of Haifa [Haifa], Society for the Protection of Nature, Université de Lausanne (UNIL), Institute of Environmental Sciences, Uniwersytet Jagielloński w Krakowie = Jagiellonian University (UJ), Department of Agriculture and Forest Sciences, Università degli studi di Palermo - University of Palermo, Department of Zoology, Siedlce University of Natural Sciences and Humanities, Evolution, adaptation et comportement, Département écologie évolutive [LBBE], Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Museum and Institute of Zoology, Polska Akademia Nauk = Polish Academy of Sciences (PAN), Behavioural Ecology & Ecophysiology Group, Section of Ecology, University of Turku, Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), School of Biosciences [Cardiff], Cardiff University, Department of Ecology, University of Oulu, Departamento de Ecología, Universidad de La Laguna [Tenerife - SP] (ULL), Tel Aviv University [Tel Aviv], Department of Natural and Social Sciences, University of Gloucestershire, Edward Grey Institute of Field Ornithology-Institute of Human Sciences, Department of Animal Ecology - Evolutionary Biology Centre, Uppsala University, Lancaster Environment Centre, Lancaster University, Evolution et Diversité Biologique (EDB), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Centre for Ecology & Hydrology (CEH), Natural Environment Research Council (NERC), Institute of Ecology of Nature Research Centre, Institute of Ecology & Earth Sciences, University of Tartu, Departamento de Ecología Evolutiva, Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Museo Nacional de Ciencias Naturales (MNCN), Rzeszow University, Department of Biological and Environmental Science [Jyväskylä Univ] (JYU), University of Jyväskylä (JYU), Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Animal Ecology, Lund University [Lund], Department of Life Sciences, University of Coimbra [Portugal] (UC)-Institute of Marine Research, Centro de Estudos Florestais, Technical University of Lisbon-Instituto Superior de Agronomia, Didactica Research Unit, Institute of Ecology & Evolution (IEE), University of Bern, Evolutionary Ecology Group (GIBE), University of A Coruña (UDC), Centro de Investigaciones Biológicas (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Department of Biosciences [Oslo], Faculty of Mathematics and Natural Sciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO), Luontotutkimus Solonen Oy, SROPU, School of Life Sciences, University of Sussex, Institute of Zoology, Poznan University of Life Sciences, Environmental and Marine Biology, Åbo Academy University, Funding from University Paris-Sud, FUNDAME and Xunta de Galicia ('Ángeles Alvariño' and 'Plan I2C' postdoctoral programs), FWO-Flanders and the University of Antwerp, project CGL2013-48001-C2-1-P (Spanish Ministry of Science and Innovation), the OSUOREME, the French ANR, and the ERC (ERC-2013-StG-337365-SHE)., Institut d'écologie et des sciences de l'environnement de Paris (IEES), Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Paul-Valéry - Montpellier 3 (UM3), Ecology of Terrestrial and Aquatic Systems, University Badji Mokhtar, Centre Tecnològico Forestal de Catalunya (CTFC), Jagiellonian University [Krakow] (UJ), Polska Akademia Nauk (PAN), Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, School of Bioscience, Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Consejo Superior de Investigaciones Científicas [Spain] (CSIC)-Museo Nacional de Ciencias Naturales (MNCN), Department of Biological and Environmental Sciences, University of Jyväskylä, Consejo Superior de Investigaciones Científicas [Spain] (CSIC), Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE), Université Badji Mokhtar Annaba (UBMA), Université de Lausanne = University of Lausanne (UNIL), Biogéosciences [UMR 6282] (BGS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Tel Aviv University (TAU), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Museo Nacional de Ciencias Naturales [Madrid] (MNCN), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Technical University of Lisbon-Instituto Superior de Agronomia [Lisboa] (ISA), Universidade de Lisboa = University of Lisbon (ULISBOA)-Universidade de Lisboa = University of Lisbon (ULISBOA), Vaugoyeau, Marie, Ministerio de Ciencia e Innovación (España), Vaugoyeau, M, Adriaensen, F, Artemyev, A, Bańbura, J, Barba, E, Biard, C, Blondel, J, Bouslama, Z, Bouvier. J-C, Camprodon, J, Cecere, F, Charmantier, A, Charter, M, Cichoń, M, Cusimano, C, Czeszczewik, D, Demeyrier, V, Doligez, B, Doutrelant, C, Dubiec, A, Eens, M, Eeva, T, Faivre, B, Ferns, PN, Forsman, JT, García-del-Rey, E, Goldshtein, A, Goodenough, AE, Gosler, AG, Grégoire, A, Gustafsson, L, Harnist, I, Hartley, IR, Heeb, P, Hinsley, SA, Isenmann, P, Jacob, S, Juśkaitis, R, Korpimäki, E, Krams, I, Laaksonen, T, Lambrechts, MM, Leclercq, B, Lehikoinen, E, Loukola, O, Lundberg, A, Mainwaring, MC, Mänd, R, Massa, B, Mazgajski, TD, Merino, S, Mitrus, C, Mönkkönen, M, Morin, X, Nager, RG, Nilsson, J-Å, Nilsson, SG, Norte, AC, Orell, M, Perret, P, Perrins, CM, Pimentel, CS, Pinxten, R, Richner, H, Robles, H, Rytkönen, S, Senar, JC, Seppänen, JT, Pascoal da Silva, L, Slagsvold, T, Solonen, T, Sorace, A, Stenning, MJ, Tryjanowski, P, von Numers, M, Walankiewicz, W, Møller, AP, Ecologie Systématique et Evolution ( ESE ), Université Paris-Sud - Paris 11 ( UP11 ) -AgroParisTech-Centre National de la Recherche Scientifique ( CNRS ), University of Antwerp ( UA ), Karelian Research Center of the Russian Academy of Science ( KarRC RAS ), Institut d'écologie et des sciences de l'environnement de Paris ( IEES ), Institut National de la Recherche Agronomique ( INRA ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre d’Ecologie Fonctionnelle et Evolutive ( CEFE ), Institut de Recherche pour le Développement ( IRD [France-Sud] ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Montpellier ( UM ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -École pratique des hautes études ( EPHE ) -Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -Université Paul-Valéry - Montpellier 3 ( UM3 ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ), Unité de recherche Plantes et Systèmes de Culture Horticoles ( PSH ), Institut National de la Recherche Agronomique ( INRA ), Centre Tecnològico Forestal de Catalunya ( CTFC ), University of Lausanne, Jagiellonian University [Krakow] ( UJ ), Università degli studi di Palermo, Laboratoire de Biométrie et Biologie Evolutive ( LBBE ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique ( Inria ) -Centre National de la Recherche Scientifique ( CNRS ), Polska Akademia Nauk ( PAN ), Biogéosciences [Dijon] ( BGS ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique ( CNRS ), Universidad de la Laguna, Evolution et Diversité Biologique ( EDB ), Institut de Recherche pour le Développement ( IRD ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Centre for Ecology & Hydrology ( CEH ), Natural Environment Research Council ( NERC ), Consejo Superior de Investigaciones Científicas [Spain] ( CSIC ) -Museo Nacional de Ciencias Naturales, University of Coimbra [Portugal] ( UC ) -Institute of Marine Research, Institute of Ecology & Evolution ( IEE ), Evolutionary Ecology Group ( GIBE ), University of A Coruña ( UDC ), Centro de Investigaciones Biológicas ( CSIC ), Consejo Superior de Investigaciones Científicas [Spain] ( CSIC ), Department of Biosciences, and University of Oslo ( UiO )
Subjects: 0106 biological sciences, Avian clutch size, 010504 meteorology & atmospheric sciences, urban heat island effect, 01 natural sciences, Ficedula hypoleuca, orthophotograph, Breeding phenology, orthophotograph, passerine birds, population dynamics, urban heat island effect, Parus major, 11. Sustainability, population dynamics, passerine birds, QL_671, Original Research, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, education.field_of_study, Ecology, Phenology, Cyanistes, breeding phenology, oiseau nicheur, Chemistry, dynamique des populations, Ficedula albicollis, education, Population, Biology, 010603 evolutionary biology, Ecology and Environment, [ SDV.EE ] Life Sciences [q-bio]/Ecology, environment, reproduction, Cyanistes caeruleus, oiseau, Nest box, Ecology, Evolution, Behavior and Systematics, 0105 earth and related environmental sciences, Nature and Landscape Conservation, Breeding phenology, Ekologi, Parus, [ SDE.BE ] Environmental Sciences/Biodiversity and Ecology, urbanisation, Environmental and Society, Ficedula, biology.organism_classification, populaatiodynamiikka, Settore AGR/11 - Entomologia Generale E Applicata, 13. Climate action, ta1181, Environnement et Société, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Zoology
Abstract: Marie Vaugoyeau [et al.], The increase in size of human populations in urban and agricultural areas has resulted in considerable habitat conversion globally. Such anthropogenic areas have specific environmental characteristics, which influence the physiology, life history, and population dynamics of plants and animals. For example, the date of bud burst is advanced in urban compared to nearby natural areas. In some birds, breeding success is determined by synchrony between timing of breeding and peak food abundance. Pertinently, caterpillars are an important food source for the nestlings of many bird species, and their abundance is influenced by environmental factors such as temperature and date of bud burst. Higher temperatures and advanced date of bud burst in urban areas could advance peak caterpillar abundance and thus affect breeding phenology of birds. In order to test whether laying date advance and clutch sizes decrease with the intensity of urbanization, we analyzed the timing of breeding and clutch size in relation to intensity of urbanization as a measure of human impact in 199 nest box plots across Europe, North Africa, and the Middle East (i.e., the Western Palearctic) for four species of hole-nesters: blue tits (Cyanistes caeruleus), great tits (Parus major), collared flycatchers (Ficedula albicollis), and pied flycatchers (Ficedula hypoleuca). Meanwhile, we estimated the intensity of urbanization as the density of buildings surrounding study plots measured on orthophotographs. For the four study species, the intensity of urbanization was not correlated with laying date. Clutch size in blue and great tits does not seem affected by the intensity of urbanization, while in collared and pied flycatchers it decreased with increasing intensity of urbanization. This is the first large-scale study showing a species-specific major correlation between intensity of urbanization and the ecology of breeding. The underlying mechanisms for the relationships between life history and urbanization remain to be determined. We propose that effects of food abundance or quality, temperature, noise, pollution, or disturbance by humans may on their own or in combination affect laying date and/or clutch size., E. Barba acknowledges funding of project CGL2013-48001-C2-1-P (Spanish Ministry of Science and Innovation).
Published: 2016
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28. Clutch-size variation in Western Palaearctic secondary hole-nesting passerine birds in relation to nest box design

Author: Anne E. Goodenough, Alexis S. Chaine, Martyn J. Stenning, Jacques Blondel, Shelley A. Hinsley, Philipp Heeb, Erkki Korpimäki, Olli J. Loukola, Anne Charmantier, Tore Slagsvold, Eduardo Garcia-del-Rey, Paul Isenmann, Carla S. Pimentel, Aya Goldshtein, Arne Lundberg, Jean Charles Bouvier, Andrew F. Russell, Zihad Bouslama, Ilze Priedniece, Jordi Camprodon, Janne T. Seppänen, Markku Orell, Alexandr Artemyev, Camillo Cusimano, Judith Morales-Fernaz, Peter N. Ferns, Vladimír Remeš, Juan Moreno, Frank Adriaensen, János Török, Xavier Morin, Ian R. Hartley, Ruedi G. Nager, Toni Laaksonen, Marcel M. Lambrechts, Christopher M. Perrins, Tapio Eeva, Rimvydas Juškaitis, Seppo Rytkönen, Luís P. da Silva, Arie J. van Noordwijk, Rianne Pinxten, Hugo Robles, Juan Carlos Senar, Bruno Faivre, Piotr Tryjanowski, Andrew G. Gosler, Tapio Solonen, Arnaud Grégoire, Jerzy Bańbura, Alberto Sorace, Staffan Jacob, Sven G. Nilsson, Heinz Richner, Motti Charter, Clotilde Biard, Blandine Doligez, Wiesaw Walankiewicz, Anders Pape Møller, Claire Doutrelant, Cezary Mitrus, Mikael von Numers, Raivo Mänd, Marcel Eens, Lars Gustafsson, Ana Cláudia Norte, Santiago Merino, Mariusz Cichoń, Mikko Mönkkönen, Esa Lehikoinen, Francesco Cecere, Dorota Czeszczewik, Bernard Leclercq, Antero Järvinen, Anna Dubiec, Wojciech Kania, Jan-Åke Nilsson, Indrikis Krams, Iga Góźdź, Philippe Perret, Marie Claude Quidoz, Mark C. Mainwaring, Jukka T. Forsman, Bruno Massa, Tomasz D. Mazgajski, Emilio Barba, Ecologie Systématique et Evolution (ESE), Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), Evolutionary Ecology Group, University of Antwerp (UA), Institute of Biology, Russian Academy of Sciences [Moscow] (RAS), Department of Experimental Zoology & Evolutionary Biology, Łódź University of Technology, Terrestrial Vertebrates Research Unit 'Cavanilles', University of Valencia-Institute of Biodiversity and Evolutionary Biology, Laboratoire Ecologie et évolution, Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Research Laboratory 'Ecology of Terrestrial and Aquatic Systems', University Badji Mokhtar, Unité de recherche Plantes et Systèmes de Culture Horticoles (PSH), Institut National de la Recherche Agronomique (INRA), Biodiversity Department, Centre de Ciència i Tecnologia Forestal de Catalunya (CTFC), Station d’Ecologie Expérimentale du CNRS à Moulis (SEEM), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), University of Haifa [Haifa], Society for the Protection of Nature, Université de Lausanne (UNIL), Institute of Environmental Sciences, Uniwersytet Jagielloński w Krakowie = Jagiellonian University (UJ), Stazione Inanellamento c/o Dipartimento SEN-FIMIZO, Università di Palermo, Department of Zoology, Siedlce University of Natural Sciences and Humanities, Evolution, adaptation et comportement, Département écologie évolutive [LBBE], Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Museum and Institute of Zoology, Polska Akademia Nauk = Polish Academy of Sciences (PAN), Department of Biology (Ethology), Section of Ecology, University of Turku, Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), School of Biosciences [Cardiff], Cardiff University, Department of Biology, University of Oulu, Departamento de Ecología, Universidad de La Laguna [Tenerife - SP] (ULL), Tel Aviv University [Tel Aviv], Department of Natural and Social Sciences, University of Gloucestershire, Edward Grey Institute of Field Ornithology-Institute of Human Sciences, Evolutionary Biology Centre, Uppsala University, Lancaster Environment Centre, Lancaster University, Evolution et Diversité Biologique (EDB), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, The Lodge, RSPB, Kilpisjarvi Biological Station, Institute of Ecology of Nature Research Centre, Ornithological Station, Polska Akademia Nauk = Polish Academy of Sciences (PAN)-Museum and Institute of Zoology, Institute of Ecology & Earth Sciences, University of Tartu, Departamento de Ecología Evolutiva, Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Museo Nacional de Ciencias Naturales (MNCN), Rzeszow University, Department of Biological and Environmental Science [Jyväskylä Univ] (JYU), University of Jyväskylä (JYU), Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Animal Ecology, Lund University [Lund], Department of Life Sciences, University of Coimbra [Portugal] (UC), Centro de Estudos Florestais, Universidade de Lisboa (ULISBOA)-Instituto Superior de Agronomia, Latvian Fund for Nature, Laboratory of Ornithology, Palacky University Olomouc, Institute of Ecology & Evolution (IEE), University of Bern, Unidad Asociada CSIC de Ecología Evolutiva y de la Conducta, Nat-Museu de Ciències Naturals de Barcelona, Department of Biosciences [Oslo], Faculty of Mathematics and Natural Sciences [Oslo], University of Oslo (UiO)-University of Oslo (UiO), Luontotutkimus Solonen Oy, SROPU, School of Life Sciences, University of Sussex, Behavioral Ecology Group, Eötvös Loránd University (ELTE), Institute of Zoology, Poznan University of Life Sciences, Netherlands Institute of Ecology, Netherlands Institute of Ecology - NIOO-KNAW (NETHERLANDS), Environmental and Marine Biology, Åbo Academy University, Study supported by Academy of Finland (Project Number 265859), by the Spanish Research Council-CSIC, by the European Social Fund (programme 'Junta para la Ampliacion de Estudios'), by OTKA (Project Number 75618) and by Fundacion Alfonso Martin Escudero and Xunta de Galicia (Angeles Alvarino program and Plan I2C postdoctoral grant)., Ecologie Systématique et Evolution ( ESE ), Université Paris-Sud - Paris 11 ( UP11 ) -AgroParisTech-Centre National de la Recherche Scientifique ( CNRS ), University of Antwerp ( UA ), Russian Academy of Sciences [Moscow] ( RAS ), Ecologie et évolution, École normale supérieure - Paris ( ENS Paris ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Centre d’Ecologie Fonctionnelle et Evolutive ( CEFE ), Institut de Recherche pour le Développement ( IRD [France-Sud] ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Montpellier ( UM ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -École pratique des hautes études ( EPHE ) -Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -Université Paul-Valéry - Montpellier 3 ( UM3 ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ), Unité Plantes et Systèmes de Culture Horticoles ( PSH ), Institut National de la Recherche Agronomique ( INRA ), Forest Technology Center of Catalonia, Station d'Ecologie Expérimentale du CNRS, Centre National de la Recherche Scientifique ( CNRS ), University of Lausanne, Jagiellonian University [Krakow] ( UJ ), Laboratoire de Biométrie et Biologie Evolutive ( LBBE ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique ( Inria ) -Centre National de la Recherche Scientifique ( CNRS ), Polska Akademia Nauk ( PAN ), Biogéosciences [Dijon] ( BGS ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique ( CNRS ), School of Bioscience, Universidad de la Laguna, Evolution et Diversité Biologique ( EDB ), Institut de Recherche pour le Développement ( IRD ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Polska Akademia Nauk ( PAN ) -Museum and Institute of Zoology, Consejo Superior de Investigaciones Científicas [Spain] ( CSIC ) -Museo Nacional de Ciencias Naturales, Department of Biological and Environmental Sciences, University of Jyväskylä, University of Coimbra [Portugal] ( UC ), Instituto Superior de Agronomia-University of Lisbon, Palacky University, Institute of Ecology & Evolution ( IEE ), Department of Biosciences, University of Oslo ( UiO ), Eötvös Loránd University ( ELTE ), Animal Population Biology, Animal Ecology (AnE), Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Paul-Valéry - Montpellier 3 (UM3), Jagiellonian University [Krakow] (UJ), Polska Akademia Nauk (PAN), Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Polska Akademia Nauk (PAN)-Museum and Institute of Zoology, Consejo Superior de Investigaciones Científicas [Spain] (CSIC)-Museo Nacional de Ciencias Naturales (MNCN), Møller, AP, Adriaensen, F, Artemyev, A, Bańbura, J, Barba, E, Biard, C, Blondel, J, Bouslama, Z, Bouvier, JC, Camprodon, J, Cecere, C, Chaine, A, Charmantier, A, Charter, M, Cichoń, M, Cusimano, C, Czeszczewik, D, Doligez, B, Doutrelant, C, Dubiec, A, Eens, M, Eeva, T, Faivre, B, Ferns, PN, Forsman, JT, García-del-Rey, E, Goldshtein, A, Goodenough, AE, Gosler, AG, Góźdź, I, Grégoire, A, Gustafsson, L, Hartley, IR, Heeb, P, Hinsley, SA, Isenmann, P, Jacob, S, Järvinen, A, Juškaitis, R, Kania, W, Korpimäki, E, Krams, I, Laaksonen, T, Leclercq, B, Lehikoinen, E, Loukola, O, Lundberg, A, Mainwaring, MC, Mänd, R, Massa, B, Mazgajski, TD, Merino, S, Mitrus, C, Mönkkönen, M, Morales-Fernaz, J, Moreno, J, Morin, X, Nager, RG, Nilsson, JA, Nilsson, SG, Norte, AC, Orell, M, Perret, P, Perrins, CM, Pimentel, CS, Pinxten, R, Priedniece, I, Quidoz, MC, Remeš, V, Richner, H, Robles, H, Russell, A, Rytkönen, S, Senar, JC, Seppänen, JT, Pascoal da Silva, L, Slagsvold, T, Solonen, T, Sorace, A, Stenning, MJ, Török, J, Tryjanowski, P, van Noordwijk, AJ, von Numers, M, Walankiewicz, W, Lambrechts, MM, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Lausanne = University of Lausanne (UNIL), Università degli studi di Palermo - University of Palermo, Biogéosciences [UMR 6282] (BGS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Tel Aviv University (TAU), Museo Nacional de Ciencias Naturales [Madrid] (MNCN), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Universidade de Lisboa = University of Lisbon (ULISBOA)-Instituto Superior de Agronomia [Lisboa] (ISA), Universidade de Lisboa = University of Lisbon (ULISBOA), Museu de Ciències Naturals de Barcelona, European Commission, and Consejo Superior de Investigaciones Científicas (España)
Subjects: 0106 biological sciences, Avian clutch size, Nest box floor area, habitat, Nest boxmaterial, 010603 evolutionary biology, 01 natural sciences, 010605 ornithology, [ SDV.EE ] Life Sciences [q-bio]/Ecology, environment, Nest, biology.animal, nest box material, Nest box, Biology, Ecology, Evolution, Behavior and Systematics, ComputingMilieux_MISCELLANEOUS, Geographic location, Parus, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, [ SDE.BE ] Environmental Sciences/Biodiversity and Ecology, Latitude, biology, Ecology, Ecological Modeling, [SDV.BA]Life Sciences [q-bio]/Animal biology, longitude, Cyanistes, Ficedula, nest box floor area, latitude, 15. Life on land, biology.organism_classification, Bird nest, Passerine, Habitat, Chemistry, Settore AGR/11 - Entomologia Generale E Applicata, Longitude, geographic location, international, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Hole nesting, natural holes, nest boxes, reaction norm
Abstract: Møller, A.P. [et al.], Secondary hole-nesting birds that do not construct nest holes themselves and hence regularly breed in nest boxes constitute important model systems for field studies in many biological disciplines with hundreds of scientists and amateurs involved. Those research groups are spread over wide geographic areas that experience considerable variation in environmental conditions, and researchers provide nest boxes of varying designs that may inadvertently introduce spatial and temporal variation in reproductive parameters. We quantified the relationship between mean clutch size and nest box size and material after controlling for a range of environmental variables in four of the most widely used model species in the Western Palaearctic: great tit Parus major, blue tit Cyanistes caeruleus, pied flycatcher Ficedula hypoleuca and collared flycatcher F. albicollis from 365 populations and 79 610 clutches. Nest floor area and nest box material varied non-randomly across latitudes and longitudes, showing that scientists did not adopt a random box design. Clutch size increased with nest floor area in great tits, but not in blue tits and flycatchers. Clutch size of blue tits was larger in wooden than in concrete nest boxes. These findings demonstrate that the size of nest boxes and material used to construct nest boxes can differentially affect clutch size in different species. The findings also suggest that the nest box design may affect not only focal species, but also indirectly other species through the effects of nest box design on productivity and therefore potentially population density and hence interspecific competition. © 2014 The Authors. Methods in Ecology and Evolution © 2014 British Ecological Society., J. Morales by the Spanish Research Council-CSIC and the European Social Fund (programme Junta para la Ampliación de Estudios).
Published: 2014
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29. Lie to me to lay with me: Females deceive males via terminal investment.

Author: Mendoza-Díaz de León L, Cordero-Molina S, Krams I, and Contreras-Garduño J
Subjects: Female, Male, Animals, Tenebrio physiology, Tenebrio drug effects, Paraquat pharmacology, Sexual Behavior, Animal drug effects, Sexual Behavior, Animal physiology, Lipopolysaccharides pharmacology
Abstract: Historically, males have frequently been portrayed as the manipulative and deceptive gender, while females are often seen as adopting a coy and passive role. In this context, it is proposed that males use a terminal investment strategy, misleading females about their true poor condition, while females passively opt to mate with these deceptive males. However, we hypothesize that females in suboptimal condition may also engage in a terminal investment strategy by mimicking or enhancing their attractiveness to match that of females in better conditions. We studied this hypothesis in Tenebrio molitor, by subjecting females to three varying doses of lipopolysaccharides of Escherichia coli (LPS; 0.25, 0.5, or 1 mg ml-1), or three doses of the pro-oxidant Paraquat (PQ; 20, 40 or 80 mM), and subsequently assessing their survival and attractiveness to males. The LPS treatments and 20 mM of PQ had no significant effect on the survival or attractiveness of the females. However, females treated with 40 or 80 mM PQ survived fewer days compared to the control group. Those injected with 40 mM were more attractive than their control counterparts, while those treated with 80 mM were less attractive. Since the identical doses of LPS, which induce terminal investment in males, had no effect on females, we suggest sexual dimorphism in terminal investment. Furthermore, similar to males, if the stressor reaches a sufficiently high level, the signal becomes honest. These findings highlight how the quantity of stressors influences support for the terminal investment strategy in both males and females. Notably, this study challenges prevailing notions regarding gender roles in sexual selection, indicating that females, not just males, conceal their poor condition to attract mating partners., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Mendoza-Díaz de León et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Published: 2024
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30. The effect of yin yoga intervention on state and trait anxiety during the COVID-19 pandemic.

Author: Somere K, Munkevics M, Krams R, Rača G, Luoto S, and Krams I
Abstract: Introduction: Although some findings indicate that yoga can reduce stress and anxiety, many studies present mixed results. The potential of yoga interventions to alleviate anxiety, including the mechanisms and boundary conditions by which it does so, is an under-researched topic. Anxiety is often divided into "state anxiety" and "trait anxiety," the former being a temporary reaction to stressful events, while the latter is a more stable personality feature that responds to adverse situations or perceived threats., Materials and Methods: This study investigates whether a yin yoga intervention delivered online reduces state anxiety immediately after each yoga session and whether the anxiety levels are significantly lower at the end of the 10-week yoga intervention than at the beginning of the study. We also predicted no effect of yin yoga intervention on trait anxiety. The study was conducted during the COVID-19 pandemic when participants ( N = 48 Latvian women) experienced heightened anxiety levels., Results: This study shows that a ten-week online yin yoga intervention significantly reduced state anxiety in the intervention group compared with the control group. State anxiety levels also significantly decreased after each yin yoga session, providing more support for the anxiety-reducing effect of yin yoga. In contrast, yoga participation did not cause differences in trait anxiety between the control and intervention groups, even though trait anxiety decreased in the intervention group and increased in the control group over the study period., Conclusion: The positive effects of yin yoga on state anxiety indicate the potential of yin yoga intervention as a first-line treatment to control and reduce state anxiety, with possible additional effects on trait anxiety., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Somere, Munkevics, Krams, Rača, Luoto and Krams.)
Published: 2024
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31. A diabetes-like biochemical and behavioural phenotype of Drosophila induced by predator stress.

Author: Krama T, Bahhir D, Ots L, Popovs S, Bartkevičs V, Pugajeva I, Krams R, Merivee E, Must A, Rantala MJ, Krams I, and Jõers P
Subjects: Animals, Humans, Drosophila, Drosophila melanogaster, Predatory Behavior physiology, Food Chain, Diabetes Mellitus, Metabolic Diseases
Abstract: Predation can have both lethal and non-lethal effects on prey. The non-lethal effects of predation can instil changes in prey life history, behaviour, morphology and physiology, causing adaptive evolution. The chronic stress caused by sustained predation on prey is comparable to chronic stress conditions in humans. Conditions like anxiety, depression, and post-traumatic stress syndrome have also been implicated in the development of metabolic disorders such as obesity and diabetes. In this study, we found that predator stress induced during larval development in fruit flies Drosophila melanogaster impairs carbohydrate metabolism by systemic inhibition of Akt protein kinase, which is a central regulator of glucose uptake. However, Drosophila grown with predators survived better under direct spider predation in the adult phase. Administration of metformin and 5-hydroxytryptophan (5-HTP), a precursor of the neurotransmitter serotonin, reversed these effects. Our results demonstrate a direct link between predator stress and metabolic impairment, suggesting that a diabetes-like biochemical phenotype may be adaptive in terms of survival and reproductive success. We provide a novel animal model to explore the mechanisms responsible for the onset of these metabolic disorders, which are highly prevalent in human populations.
Published: 2023
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32. The effect of climate change on avian offspring production: A global meta-analysis.

Author: Halupka L, Arlt D, Tolvanen J, Millon A, Bize P, Adamík P, Albert P, Arendt WJ, Artemyev AV, Baglione V, Bańbura J, Bańbura M, Barba E, Barrett RT, Becker PH, Belskii E, Bolton M, Bowers EK, Bried J, Brouwer L, Bukacińska M, Bukaciński D, Bulluck L, Carstens KF, Catry I, Charter M, Chernomorets A, Covas R, Czuchra M, Dearborn DC, de Lope F, Di Giacomo AS, Dombrovski VC, Drummond H, Dunn MJ, Eeva T, Emmerson LM, Espmark Y, Fargallo JA, Gashkov SI, Golubova EY, Griesser M, Harris MP, Hoover JP, Jagiełło Z, Karell P, Kloskowski J, Koenig WD, Kolunen H, Korczak-Abshire M, Korpimäki E, Krams I, Krist M, Krüger SC, Kuranov BD, Lambin X, Lombardo MP, Lyakhov A, Marzal A, Møller AP, Neves VC, Nielsen JT, Numerov A, Orłowska B, Oro D, Öst M, Phillips RA, Pietiäinen H, Polo V, Porkert J, Potti J, Pöysä H, Printemps T, Prop J, Quillfeldt P, Ramos JA, Ravussin PA, Rosenfield RN, Roulin A, Rubenstein DR, Samusenko IE, Saunders DA, Schaub M, Senar JC, Sergio F, Solonen T, Solovyeva DV, Stępniewski J, Thompson PM, Tobolka M, Török J, van de Pol M, Vernooij L, Visser ME, Westneat DF, Wheelwright NT, Wiącek J, Wiebe KL, Wood AG, Wuczyński A, Wysocki D, Zárybnická M, Margalida A, and Halupka K
Subjects: Animals, Female, Seasons, Chickens, Reproduction, Climate Change, Life History Traits
Abstract: Climate change affects timing of reproduction in many bird species, but few studies have investigated its influence on annual reproductive output. Here, we assess changes in the annual production of young by female breeders in 201 populations of 104 bird species (N = 745,962 clutches) covering all continents between 1970 and 2019. Overall, average offspring production has declined in recent decades, but considerable differences were found among species and populations. A total of 56.7% of populations showed a declining trend in offspring production (significant in 17.4%), whereas 43.3% exhibited an increase (significant in 10.4%). The results show that climatic changes affect offspring production through compounded effects on ecological and life history traits of species. Migratory and larger-bodied species experienced reduced offspring production with increasing temperatures during the chick-rearing period, whereas smaller-bodied, sedentary species tended to produce more offspring. Likewise, multi-brooded species showed increased breeding success with increasing temperatures, whereas rising temperatures were unrelated to reproductive success in single-brooded species. Our study suggests that rapid declines in size of bird populations reported by many studies from different parts of the world are driven only to a small degree by changes in the production of young.
Published: 2023
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33. The honey bees immune memory.

Author: Burciaga RA, Ruiz-Guzmán G, Lanz-Mendoza H, Krams I, and Contreras-Garduño J
Subjects: Animals, Bees, Defensins, Hemocytes metabolism, Immunologic Memory, Escherichia coli metabolism, Monophenol Monooxygenase metabolism
Abstract: Invertebrates' immune priming or innate immune memory is an analogous response to the vertebrates' adaptive memory. We investigated if honey bees have immune memory. We compared survival and immune response between bees that were: 1) manipulated (Naïve), 2) challenged twice with the same pathogen Escherichia coli (Memory), 3) challenged twice with different pathogens (Staphylococcus aureus versus E. coli, Micrococcus lysodeikticus versus E. coli), or 4) with PBS (the diluent of bacteria) versus E. coli (heterologous challenge; Control). Results indicate better survival in the Memory than the Control group, and the Memory group showed a similar survival than Naïve insects. The Memory group had higher lytic activity but lower prophenoloxidase, phenoloxidase activity, and hemocyte count than the Control and Naïve groups. No differences were found in relative expression of defensin-1. This first demonstration of immune memory opens the questions about its molecular mechanisms and whether, immune memory could be used against natural parasites that affect honey bees, hence, if they could be "vaccinated" against some natural parasites., Competing Interests: Declaration of competing interest All authors declare that there is no conflict of interest regarding the publication of this paper., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
Published: 2023
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34. Editorial: Coronavirus Disease (COVID-19) and Its Psychobehavioral Consequences.

Author: Luoto S, Prokosch ML, Varella MAC, Krams I, and Fincher CL
Abstract: Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
Published: 2021
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35. MHC Class II Heterozygosity Associated With Attractiveness of Men and Women.

Author: Hakkarainen TJ, Krams I, Coetzee V, Skrinda I, Kecko S, Krama T, Ilonen J, and Rantala MJ
Subjects: Animals, Female, Humans, Male, Major Histocompatibility Complex genetics, Sexual Partners
Abstract: The genes of the Major Histocompatibility Complex (MHC), which plays a fundamental role in the immune system, are some of the most diverse genes in vertebrates and have been connected to mate choice in several species, including humans. While studies suggest a positive relationship between MHC diversity and male facial attractiveness, the connection of MHC diversity to other visual traits and female attractiveness is still unclear. The purpose of this study was to investigate further whether MHC heterozygosity, indicating genetic quality, is associated with visual traits affecting mate preferences in humans. In total 74 Latvian men and 49 women were genotyped for several MHC loci and rated for facial and, in men, also body attractiveness. The results indicate a preference for MHC heterozygous female and male faces. However, the initially positive relationship between MHC heterozygosity and facial attractiveness becomes non-significant in females, when controlling for multiple testing, and in males, when age and fat content is taken into account, referring to the importance of adiposity in immune function and thus also attractiveness. Thus overall the effect of MHC heterozygosity on attractiveness seems weak. When considering separate loci, we show that the main gene related to facial attractiveness is the MHC class II DQB1; a gene important also in viral infections and autoimmune diseases. Indeed, in our study, heterozygous individuals are rated significantly more attractive than their homozygous counterparts, only in relation to gene DQB1. This study is the first to indicate a link between DQB1 and attractiveness in humans.
Published: 2021
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36. Eating Disorders: An Evolutionary Psychoneuroimmunological Approach.

Author: Rantala MJ, Luoto S, Krama T, and Krams I
Abstract: Eating disorders are evolutionarily novel conditions. They lead to some of the highest mortality rates of all psychiatric disorders. Several evolutionary hypotheses have been proposed for eating disorders, but only the intrasexual competition hypothesis is extensively supported by evidence. We present the mismatch hypothesis as a necessary extension to the current theoretical framework of eating disorders. This hypothesis explains the evolutionarily novel adaptive metaproblem that has arisen when mating motives conflict with the large-scale and easy availability of hyper-rewarding but obesogenic foods. This situation is exacerbated particularly in those contemporary environments that are characterized by sedentary lifestyles, ever-present junk foods, caloric surplus and the ubiquity of social comparisons that take place via social media. Our psychoneuroimmunological model connects ultimate-level causation with proximate mechanisms by showing how the adaptive metaproblem between mating motives and food rewards leads to chronic stress and, further, to disordered eating. Chronic stress causes neuroinflammation, which increases susceptibility to OCD-like behaviors that typically co-occur with eating disorders. Chronic stress upregulates the serotonergic system and causes dysphoric mood in anorexia nervosa patients. Dieting, however, reduces serotonin levels and dysphoric mood, leading to a vicious serotonergic-homeostatic stress/starvation cycle whereby cortisol and neuroinflammation increase through stringent dieting. Our psychoneuroimmunological model indicates that between-individual and within-individual variation in eating disorders partially arises from (co)variation in gut microbiota and stress responsivity, which influence neuroinflammation and the serotonergic system. We review the advances that have been made in recent years in understanding how to best treat eating disorders, outlining directions for future clinical research. Current evidence indicates that eating disorder treatments should aim to reduce the chronic stress, neuroinflammation, stress responsivity and gut dysbiosis that fuel the disorders. Connecting ultimate causes with proximate mechanisms and treating biopsychosocial causes rather than manifest symptoms is expected to bring more effective and sophisticated long-term interventions for the millions of people who suffer from eating disorders., (Copyright © 2019 Rantala, Luoto, Krama and Krams.)
Published: 2019
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37. Manipulating mtDNA in vivo reprograms metabolism via novel response mechanisms.

Author: Bahhir D, Yalgin C, Ots L, Järvinen S, George J, Naudí A, Krama T, Krams I, Tamm M, Andjelković A, Dufour E, González de Cózar JM, Gerards M, Parhiala M, Pamplona R, Jacobs HT, and Jõers P
Subjects: Adenosine Triphosphate genetics, Animals, Carbohydrate Metabolism genetics, Carbohydrates genetics, DNA Restriction Enzymes genetics, Diabetes Mellitus, Type 2 metabolism, Drosophila melanogaster genetics, Drosophila melanogaster metabolism, Humans, Metabolic Networks and Pathways genetics, Mitochondria metabolism, Oxidative Phosphorylation, Oxidative Stress genetics, Cellular Reprogramming genetics, DNA, Mitochondrial genetics, Diabetes Mellitus, Type 2 genetics, Mitochondria genetics
Abstract: Mitochondria have been increasingly recognized as a central regulatory nexus for multiple metabolic pathways, in addition to ATP production via oxidative phosphorylation (OXPHOS). Here we show that inducing mitochondrial DNA (mtDNA) stress in Drosophila using a mitochondrially-targeted Type I restriction endonuclease (mtEcoBI) results in unexpected metabolic reprogramming in adult flies, distinct from effects on OXPHOS. Carbohydrate utilization was repressed, with catabolism shifted towards lipid oxidation, accompanied by elevated serine synthesis. Cleavage and translocation, the two modes of mtEcoBI action, repressed carbohydrate rmetabolism via two different mechanisms. DNA cleavage activity induced a type II diabetes-like phenotype involving deactivation of Akt kinase and inhibition of pyruvate dehydrogenase, whilst translocation decreased post-translational protein acetylation by cytonuclear depletion of acetyl-CoA (AcCoA). The associated decrease in the concentrations of ketogenic amino acids also produced downstream effects on physiology and behavior, attributable to decreased neurotransmitter levels. We thus provide evidence for novel signaling pathways connecting mtDNA to metabolism, distinct from its role in supporting OXPHOS., Competing Interests: Authors declare that they have no competing interests.
Published: 2019
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38. Ecological Stoichiometry: A Link Between Developmental Speed and Physiological Stress in an Omnivorous Insect.

Author: Trakimas G, Krams R, Krama T, Kortet R, Haque S, Luoto S, Eichler Inwood S, Butler DM, Jõers P, Hawlena D, Rantala MJ, Elferts D, Contreras-Garduño J, and Krams I
Abstract: The elemental composition of organisms belongs to a suite of functional traits that may adaptively respond to fluctuating selection pressures. Life history theory predicts that predation risk and resource limitations impose selection pressures on organisms' developmental time and are further associated with variability in energetic and behavioral traits. Individual differences in developmental speed, behaviors and physiology have been explained using the pace-of-life syndrome (POLS) hypothesis. However, how an organism's developmental speed is linked with elemental body composition, metabolism and behavior is not well understood. We compared elemental body composition, latency to resume activity and resting metabolic rate (RMR) of western stutter-trilling crickets ( Gryllus integer ) in three selection lines that differ in developmental speed. We found that slowly developing crickets had significantly higher body carbon, lower body nitrogen and higher carbon-to-nitrogen ratio than rapidly developing crickets. Slowly developing crickets had significantly higher RMR than rapidly developing crickets. Male crickets had higher RMR than females. Slowly developing crickets resumed activity faster in an unfamiliar relative to a familiar environment. The rapidly developing crickets did the opposite. The results highlight the tight association between life history, physiology and behavior. This study indicates that traditional methods used in POLS research should be complemented by those used in ecological stoichiometry, resulting in a synthetic approach that potentially advances the whole field of behavioral and physiological ecology.
Published: 2019
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39. Women's preferences for men's facial masculinity are strongest under favorable ecological conditions.

Author: Marcinkowska UM, Rantala MJ, Lee AJ, Kozlov MV, Aavik T, Cai H, Contreras-Garduño J, David OA, Kaminski G, Li NP, Onyishi IE, Prasai K, Pazhoohi F, Prokop P, Cardozo SLR, Sydney N, Taniguchi H, Krams I, and Dixson BJW
Subjects: Cultural Characteristics, Female, Heterosexuality, Humans, Male, Socioeconomic Factors, Choice Behavior, Ecological and Environmental Phenomena physiology, Face, Masculinity, Physical Appearance, Body
Abstract: The strength of sexual selection on secondary sexual traits varies depending on prevailing economic and ecological conditions. In humans, cross-cultural evidence suggests women's preferences for men's testosterone dependent masculine facial traits are stronger under conditions where health is compromised, male mortality rates are higher and economic development is higher. Here we use a sample of 4483 exclusively heterosexual women from 34 countries and employ mixed effects modelling to test how social, ecological and economic variables predict women's facial masculinity preferences. We report women's preferences for more masculine looking men are stronger in countries with higher sociosexuality and where national health indices and human development indices are higher, while no associations were found between preferences and indices of intra-sexual competition. Our results show that women's preferences for masculine faces are stronger under conditions where offspring survival is higher and economic conditions are more favorable.
Published: 2019
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40. Fat is not just an energy store.

Author: Krams I, Rantala MJ, Luoto S, and Krama T
Subjects: Animals, Predatory Behavior, Adipose Tissue, Energy Metabolism
Published: 2018
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41. Linking organismal growth, coping styles, stress reactivity, and metabolism via responses against a selective serotonin reuptake inhibitor in an insect.

Author: Krams I, Trakimas G, Kecko S, Elferts D, Krams R, Luoto S, Rantala MJ, Mänd M, Kuusik A, Kekäläinen J, Jõers P, Kortet R, and Krama T
Subjects: Animals, Selective Serotonin Reuptake Inhibitors administration & dosage, Adaptation, Psychological drug effects, Behavior, Animal drug effects, Gryllidae drug effects, Gryllidae physiology, Organogenesis drug effects, Selective Serotonin Reuptake Inhibitors pharmacology, Stress, Physiological drug effects
Abstract: Evidence suggests that brain serotonin (5-HT) is one of the central mediators of different types of animal personality. We tested this assumption in field crickets Gryllus integer using a selective serotonin reuptake inhibitor (SSRI). Crickets were selected for slow and rapid development and tested for their coping styles under non-stressful conditions (time spent exploring a novel object). Resting metabolic rate, maximum metabolic rate and latency to resume activity were measured under stressful conditions (stress reactivity). Measurements were taken (i) before and (ii) during the SSRI treatment. Before the SSRI treatment, a strong negative correlation was observed between coping style and stress reactivity, which suggests the existence of a behavioral syndrome. After the SSRI treatment, the syndrome was no longer evident. The results of this study show that 5-HT may be involved in regulating behavior not only along a stress reactivity gradient but also along a coping styles axis. The relationship between personality and the strength and direction of 5-HT treatment on observed behaviors indicates trait-like individual differences in 5-HT signaling. Overall, these findings do not support recent ideas arising from the pace-of-life syndrome (POLS) hypothesis, which predict higher exploration and metabolic rates in rapidly developing bold animals.
Published: 2018
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42. Short-term exposure to predation affects body elemental composition, climbing speed and survival ability in Drosophila melanogaster.

Author: Krams I, Eichler Inwood S, Trakimas G, Krams R, Burghardt GM, Butler DM, Luoto S, and Krama T
Abstract: Factors such as temperature, habitat, larval density, food availability and food quality substantially affect organismal development. In addition, risk of predation has a complex impact on the behavioural and morphological life history responses of prey. Responses to predation risk seem to be mediated by physiological stress, which is an adaptation for maintaining homeostasis and improving survivorship during life-threatening situations. We tested whether predator exposure during the larval phase of development has any influence on body elemental composition, energy reserves, body size, climbing speed and survival ability of adult Drosophila melanogaster. Fruit fly larvae were exposed to predation by jumping spiders (Phidippus apacheanus), and the percentage of carbon (C) and nitrogen (N) content, extracted lipids, escape response and survival were measured from predator-exposed and control adult flies. The results revealed predation as an important determinant of adult phenotype formation and survival ability. D. melanogaster reared together with spiders had a higher concentration of body N (but equal body C), a lower body mass and lipid reserves, a higher climbing speed and improved adult survival ability. The results suggest that the potential of predators to affect the development and the adult phenotype of D. melanogaster is high enough to use predators as a more natural stimulus in laboratory experiments when testing, for example, fruit fly memory and learning ability, or when comparing natural populations living under different predation pressures.
Published: 2016
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43. Interspecific variation in the relationship between clutch size, laying date and intensity of urbanization in four species of hole-nesting birds.

Author: Vaugoyeau M, Adriaensen F, Artemyev A, Bańbura J, Barba E, Biard C, Blondel J, Bouslama Z, Bouvier JC, Camprodon J, Cecere F, Charmantier A, Charter M, Cichoń M, Cusimano C, Czeszczewik D, Demeyrier V, Doligez B, Doutrelant C, Dubiec A, Eens M, Eeva T, Faivre B, Ferns PN, Forsman JT, García-Del-Rey E, Goldshtein A, Goodenough AE, Gosler AG, Grégoire A, Gustafsson L, Harnist I, Hartley IR, Heeb P, Hinsley SA, Isenmann P, Jacob S, Juškaitis R, Korpimäki E, Krams I, Laaksonen T, Lambrechts MM, Leclercq B, Lehikoinen E, Loukola O, Lundberg A, Mainwaring MC, Mänd R, Massa B, Mazgajski TD, Merino S, Mitrus C, Mönkkönen M, Morin X, Nager RG, Nilsson JÅ, Nilsson SG, Norte AC, Orell M, Perret P, Perrins CM, Pimentel CS, Pinxten R, Richner H, Robles H, Rytkönen S, Senar JC, Seppänen JT, Pascoal da Silva L, Slagsvold T, Solonen T, Sorace A, Stenning MJ, Tryjanowski P, von Numers M, Walankiewicz W, and Møller AP
Abstract: The increase in size of human populations in urban and agricultural areas has resulted in considerable habitat conversion globally. Such anthropogenic areas have specific environmental characteristics, which influence the physiology, life history, and population dynamics of plants and animals. For example, the date of bud burst is advanced in urban compared to nearby natural areas. In some birds, breeding success is determined by synchrony between timing of breeding and peak food abundance. Pertinently, caterpillars are an important food source for the nestlings of many bird species, and their abundance is influenced by environmental factors such as temperature and date of bud burst. Higher temperatures and advanced date of bud burst in urban areas could advance peak caterpillar abundance and thus affect breeding phenology of birds. In order to test whether laying date advance and clutch sizes decrease with the intensity of urbanization, we analyzed the timing of breeding and clutch size in relation to intensity of urbanization as a measure of human impact in 199 nest box plots across Europe, North Africa, and the Middle East (i.e., the Western Palearctic) for four species of hole-nesters: blue tits (Cyanistes caeruleus), great tits (Parus major), collared flycatchers (Ficedula albicollis), and pied flycatchers (Ficedula hypoleuca). Meanwhile, we estimated the intensity of urbanization as the density of buildings surrounding study plots measured on orthophotographs. For the four study species, the intensity of urbanization was not correlated with laying date. Clutch size in blue and great tits does not seem affected by the intensity of urbanization, while in collared and pied flycatchers it decreased with increasing intensity of urbanization. This is the first large-scale study showing a species-specific major correlation between intensity of urbanization and the ecology of breeding. The underlying mechanisms for the relationships between life history and urbanization remain to be determined. We propose that effects of food abundance or quality, temperature, noise, pollution, or disturbance by humans may on their own or in combination affect laying date and/or clutch size.
Published: 2016
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44. Tufted titmouse (Baeolophus bicolor) calling and risk-sensitive foraging in the face of threat.

Author: Freeberg TM, Krama T, Vrublevska J, Krams I, and Kullberg C
Subjects: Animals, Orientation, Predatory Behavior, Risk-Taking, Social Behavior, Feeding Behavior psychology, Songbirds physiology, Vocalization, Animal
Abstract: Individuals often produce alarm or mobbing calls when they detect a threat such as a predator. Little is known about whether such calling is affected by the facial orientation of a potential threat, however. We tested for an effect of facial orientation of a potential threat on tufted titmice, Baeolophus bicolor, a songbird that uses chick-a-dee calls in a variety of social contexts. In two studies, a human observer wore an animal mask that either faced or faced away from the focal bird(s). In Study 1, focal birds were individual titmice captured in a walk-in trap, and the observer stood near the trapped bird. In Study 2, focal birds were titmouse flocks utilizing a feeding station and the observer stood near the station. In both studies, calling behavior was affected by mask orientation. In Study 2, foraging and agonistic behavior were also affected. Titmice can therefore perceive the facial orientation of a potential threat, and this perception affects different behavioral systems, including calling. Our results indicate sensitivity of titmice to the facial orientation of a potential predator in two quite different motivational contexts. This work suggests the possibility of strategic signaling by prey species depending upon the perceptual space of a detected predator.
Published: 2014
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45. Variation in clutch size in relation to nest size in birds.

Author: Møller AP, Adriaensen F, Artemyev A, Bańbura J, Barba E, Biard C, Blondel J, Bouslama Z, Bouvier JC, Camprodon J, Cecere F, Charmantier A, Charter M, Cichoń M, Cusimano C, Czeszczewik D, Demeyrier V, Doligez B, Doutrelant C, Dubiec A, Eens M, Eeva T, Faivre B, Ferns PN, Forsman JT, García-Del-Rey E, Goldshtein A, Goodenough AE, Gosler AG, Góźdź I, Grégoire A, Gustafsson L, Hartley IR, Heeb P, Hinsley SA, Isenmann P, Jacob S, Järvinen A, Juškaitis R, Korpimäki E, Krams I, Laaksonen T, Leclercq B, Lehikoinen E, Loukola O, Lundberg A, Mainwaring MC, Mänd R, Massa B, Mazgajski TD, Merino S, Mitrus C, Mönkkönen M, Morales-Fernaz J, Morin X, Nager RG, Nilsson JÅ, Nilsson SG, Norte AC, Orell M, Perret P, Pimentel CS, Pinxten R, Priedniece I, Quidoz MC, Remeš V, Richner H, Robles H, Rytkönen S, Senar JC, Seppänen JT, da Silva LP, Slagsvold T, Solonen T, Sorace A, Stenning MJ, Török J, Tryjanowski P, van Noordwijk AJ, von Numers M, Walankiewicz W, and Lambrechts MM
Abstract: Nests are structures built to support and protect eggs and/or offspring from predators, parasites, and adverse weather conditions. Nests are mainly constructed prior to egg laying, meaning that parent birds must make decisions about nest site choice and nest building behavior before the start of egg-laying. Parent birds should be selected to choose nest sites and to build optimally sized nests, yet our current understanding of clutch size-nest size relationships is limited to small-scale studies performed over short time periods. Here, we quantified the relationship between clutch size and nest size, using an exhaustive database of 116 slope estimates based on 17,472 nests of 21 species of hole and non-hole-nesting birds. There was a significant, positive relationship between clutch size and the base area of the nest box or the nest, and this relationship did not differ significantly between open nesting and hole-nesting species. The slope of the relationship showed significant intraspecific and interspecific heterogeneity among four species of secondary hole-nesting species, but also among all 116 slope estimates. The estimated relationship between clutch size and nest box base area in study sites with more than a single size of nest box was not significantly different from the relationship using studies with only a single size of nest box. The slope of the relationship between clutch size and nest base area in different species of birds was significantly negatively related to minimum base area, and less so to maximum base area in a given study. These findings are consistent with the hypothesis that bird species have a general reaction norm reflecting the relationship between nest size and clutch size. Further, they suggest that scientists may influence the clutch size decisions of hole-nesting birds through the provisioning of nest boxes of varying sizes.
Published: 2014
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46. Observed fitness may affect niche overlap in competing species via selective social information use.

Author: Loukola OJ, Seppänen JT, Krams I, Torvinen SS, and Forsman JT
Subjects: Adaptation, Physiological, Animals, Competitive Behavior, Female, Finland, Latvia, Male, Clutch Size, Ecosystem, Nesting Behavior, Songbirds physiology
Abstract: Social information transmission is important because it enables horizontal spread of behaviors, not only between conspecifics but also between individuals of different species. Because interspecific social information use is expected to take place among species with similar resource needs, it may have major consequences for the emergence of local adaptations, resource sharing, and community organization. Social information use is expected to be selective, but the conditions promoting it in an interspecific context are not well known. Here, we experimentally test whether pied flycatchers (Ficedula hypoleuca) use the clutch size of great tits (Parus major) in determining the quality of the observed individual and use it as a basis of decision making. We show that pied flycatchers copied or rejected a novel nest site feature preference of great tits experimentally manipulated to exhibit high or low fitness (clutch size), respectively. Our results demonstrate that the social transmission of behaviors across species can be highly selective in response to observed fitness, plausibly making the phenomenon adaptive. In contrast with the current theory of species coexistence, overlap between realized niches of species could dynamically increase or decrease depending on the observed success of surrounding individuals.
Published: 2013
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47. The excuse principle can maintain cooperation through forgivable defection in the Prisoner's Dilemma game.

Author: Krams I, Kokko H, Vrublevska J, Abolins-Abols M, Krama T, and Rantala MJ
Subjects: Altruism, Animals, Predatory Behavior, Behavior, Animal, Cooperative Behavior, Forgiveness, Game Theory, Passeriformes physiology
Abstract: Reciprocal altruism describes a situation in which an organism acts in a manner that temporarily reduces its fitness while increasing another organism's fitness, but there is an ultimate fitness benefit based on an expectation that the other organism will act in a similar manner at a later time. It creates the obvious dilemma in which there is always a short-term benefit to cheating, therefore cooperating individuals must avoid being exploited by non-cooperating cheaters. This is achieved by following various decision rules, usually variants of the tit-for-tat (TFT) strategy. The strength of TFT, however, is also its weakness-mistakes in implementation or interpretation of moves, or the inability to cooperate, lead to a permanent breakdown in cooperation. We show that pied flycatchers (Ficedula hypoleuca) use a TFT with an embedded 'excuse principle' to forgive the neighbours that were perceived as unable to cooperate during mobbing of predators. The excuse principle dramatically increases the stability of TFT-like behavioural strategies within the Prisoner's Dilemma game.
Published: 2013
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48. Nocturnal loss of body reserves reveals high survival risk for subordinate great tits wintering at extremely low ambient temperatures.

Author: Krams I, Cīrule D, Vrublevska J, Nord A, Rantala MJ, and Krama T
Subjects: Adaptation, Physiological, Animals, Behavior, Animal, Body Mass Index, Body Weight, Cold Temperature, Female, Male, Mortality, Seasons, Social Behavior, Starvation, Acclimatization physiology, Passeriformes physiology
Abstract: Winter acclimatization in birds is a complex of several strategies based on metabolic adjustment accompanied by long-term management of resources such as fattening. However, wintering birds often maintain fat reserves below their physiological capacity, suggesting a cost involved with excessive levels of reserves. We studied body reserves of roosting great tits in relation to their dominance status under two contrasting temperature regimes to see whether individuals are capable of optimizing their survival strategies under extreme environmental conditions. We predicted less pronounced loss of body mass and body condition and lower rates of overnight mortality in dominant great tits at both mild and extremely low ambient temperatures, when ambient temperature dropped down to -43 °C. The results showed that dominant great tits consistently maintained lower reserve levels than subordinates regardless of ambient temperature. However, dominants responded to the rising risk of starvation under low temperatures by increasing their body reserves, whereas subdominant birds decreased reserve levels in harsh conditions. Yet, their losses of body mass and body reserves were always lower than in subordinate birds. None of the dominant great tits were found dead, while five young females and one adult female were found dead in nest boxes during cold spells when ambient temperatures dropped down to -43 °C. The dead great tits lost up to 23.83 % of their evening body mass during cold nights while surviving individuals lost on average 12.78 % of their evening body mass. Our results show that fattening strategies of great tits reflect an adaptive role of winter fattening which is sensitive to changes in ambient temperatures and differs among individuals of different social ranks.
Published: 2013
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49. Facial attractiveness is related to women's cortisol and body fat, but not with immune responsiveness.

Author: Rantala MJ, Coetzee V, Moore FR, Skrinda I, Kecko S, Krama T, Kivleniece I, and Krams I
Subjects: Beauty, Female, Hepatitis B immunology, Humans, Male, Young Adult, Adiposity, Antibodies, Viral blood, Face, Hydrocortisone metabolism, Visual Perception
Abstract: Recent studies suggest that facial attractiveness indicates immune responsiveness in men and that this relationship is moderated by stress hormones which interact with testosterone levels. However, studies testing whether facial attractiveness in women signals their immune responsiveness are lacking. Here, we photographed young Latvian women, vaccinated them against hepatitis B and measured the amount of specific antibodies produced, cortisol levels and percentage body fat. Latvian men rated the attractiveness of the women's faces. Interestingly, in women, immune responsiveness (amount of antibodies produced) did not predict facial attractiveness. Instead, plasma cortisol level was negatively associated with attractiveness, indicating that stressed women look less attractive. Fat percentage was curvilinearly associated with facial attractiveness, indicating that being too thin or too fat reduces attractiveness. Our study suggests that in contrast to men, facial attractiveness in women does not indicate immune responsiveness against hepatitis B, but is associated with two other aspects of long-term health and fertility: circulating levels of the stress hormone cortisol and percentage body fat.
Published: 2013
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50. Adiposity, compared with masculinity, serves as a more valid cue to immunocompetence in human mate choice.

Author: Rantala MJ, Coetzee V, Moore FR, Skrinda I, Kecko S, Krama T, Kivleniece I, and Krams I
Subjects: Adipose Tissue, Adult, Body Weights and Measures, Face, Female, Finland, Hepatitis B Antibodies blood, Humans, Immunoenzyme Techniques, Latvia, Male, Regression Analysis, Sexual Behavior physiology, Testosterone blood, White People, Adiposity genetics, Choice Behavior, Cues, Immunocompetence genetics, Masculinity
Abstract: According to the 'good genes' hypothesis, females choose males based on traits that indicate the male's genetic quality in terms of disease resistance. The 'immunocompetence handicap hypothesis' proposed that secondary sexual traits serve as indicators of male genetic quality, because they indicate that males can contend with the immunosuppressive effects of testosterone. Masculinity is commonly assumed to serve as such a secondary sexual trait. Yet, women do not consistently prefer masculine looking men, nor is masculinity consistently related to health across studies. Here, we show that adiposity, but not masculinity, significantly mediates the relationship between a direct measure of immune response (hepatitis B antibody response) and attractiveness for both body and facial measurements. In addition, we show that circulating testosterone is more closely associated with adiposity than masculinity. These findings indicate that adiposity, compared with masculinity, serves as a more important cue to immunocompetence in female mate choice.
Published: 2013
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