96 results on '"incubation behavior"'
Search Results
52. Parental care of the Black-capped Tanager (Tangara heinei) in northeastern Ecuador.
- Author
-
Freeman, Ben G. and Greeney, Harold F.
- Subjects
TANAGERS ,LIFE sciences ,BIRD conservation ,ENDANGERED species ,WILDLIFE conservation - Abstract
Copyright of Boletin SAO is the property of Sociedad Antioquena de Ornitologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2009
53. Incubation failure and nest abandonment by Leach's Storm-Petrels detected using PIT tags and temperature loggers.
- Author
-
Zangmeister, Jennifer L., Haussmann, Mark F., Cerchiara, Jack, and Mauck, Robert A.
- Subjects
SEA birds ,NEST building ,EGG incubation ,LEACH'S storm petrel ,BIRD reproduction - Abstract
Copyright of Journal of Field Ornithology is the property of Resilience Alliance and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2009
- Full Text
- View/download PDF
54. EFFECTS OF NEST HABITAT, FOOD, AND PARENTAL BEHAVIOR ON SHOREBIRD NEST SUCCESS.
- Author
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Smith, Paul Allen, Gilchrist, H. Grant, and Smith, James N. M.
- Subjects
- *
NESTS , *BIRD habitats , *PARENTAL behavior in animals , *PREDATION , *ECOLOGICAL niche , *HABITATS , *TUNDRA ecology , *SHORE birds , *WATERFOWL - Abstract
In environments such as arctic tundra, where bird densities are low and habitats are comparatively homogeneous, suitable nest sites likely are not limited. Under these conditions, reproductive success of birds may be determined by factors other than the habitat characteristics of nest sites. We studied the relative influence of nest habitat, food, nest distribution, and parental behavior on the reproductive success of tundra- breeding shorebirds at East Bay, Southampton Island, Nunavut, Canada. From 2000 to 2002, we monitored the nests of five species: Black-bellied Plover (Pluvialis squatarola), Semipalmated Plover (Charadrius semipalmatus), Ruddy Turnstone (Arenaria interpres), White-rumped Sandpiper (calidris fuscicollis), and Red Phalarope (Phalaropus fulicarius). For each species, habitat differed between nest sites and random sites. In contrast, habitat differed between successful and failed nest sites only for White-rumped Sandpipers. Shorebirds did not prefer to nest in habitats where food was most abundant. Although nest success varied among species in all years, artificial nest experiments suggested that interspecific variation in predation rate was not related to habitat type. Instead, the marked interspecific variation in nest success may have been related to incubation behavior. Species taking fewer incubation recesses had higher nest success, although these results should be viewed as preliminary. The factor with the greatest interannual influence on nest success was fluctuating predation pressure, apparently related to the abundance of predators and lemmings. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
- View/download PDF
55. A NEW EQUATION FOR CALCULATING REPRODUCTIVE SUCCESS OF CLUTCHES AS A FUNCTION OF THE DAY ON WHICH INCUBATION STARTS: SOME IMPLICATIONS.
- Author
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Murray Jr., Bertram G.
- Subjects
- *
BIRDS , *ANIMAL species , *EGG incubation , *NESTS , *ANIMAL habitations - Abstract
Many species of birds start incubation before the last egg of a clutch is laid, which often results in asynchronous hatching and fledging. The incubation pattern favored by natural selection should lead to greater reproductive success than alternative patterns. Equations for calculating the reproductive success of a clutch as a function of the start of incubation have been proposed by Clark and Wilson (1981) and Hussell (1985). Both equations predicted a greater frequency of an earlier start of incubation than occurs in nature. Here, I present a new equation in which the relevant parameters determining reproductive success as a function of the start of incubation are (1) the probability of any young leaving a nest and (2) the post-first-fledging daily survival rates of the remaining nestlings. This equation is universally applicable and accounts for the greater frequency of incubation starting later, rather than earlier, in the laying sequence of most birds. I use the equation to evaluate various hypotheses regarding the evolution of incubation patterns. [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
- View/download PDF
56. Behavioral variation and its consequences during incubation for American kestrels exposed to polychlorinated biphenyls.
- Author
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Fisher, Sheri A., Bortolotti, Gary R., Fernie, Kimberley J., Bird, David M., and Smits, Judit E.
- Subjects
ENVIRONMENTAL toxicology ,POLYCHLORINATED biphenyls ,AMERICAN kestrel ,EGG incubation ,REPRODUCTION - Abstract
Abstract: We investigated whether polychlorinated biphenyl (PCB) exposure in American kestrels (Falco sparverius) influenced incubation behavior and whether altered behavior could lead to poor reproductive success. Captive kestrels were fed a mixture of PCBs (Aroclors 1248:1254:1260) at an approximate daily dose of 7mg/kg body weight, 1 month prior to pairing and throughout incubation. Behaviors of 23 control and 23 PCB-exposed pairs were monitored throughout incubation using an electronic balance in the nest box. PCB exposure resulted in longer incubation periods and in altered incubation behaviors. Seven of 14 behavioral variables showed some association with treatment, with sex-specific effects largely biased toward disrupted male behavior. For most behaviors, the treatment effect was explained by the delayed clutch initiation induced by PCBs rather than by a direct physiological impact of the contaminants. PCB-exposed pairs with greater attendance to their eggs and better coordination of incubation duties had improved hatching success. [Copyright &y& Elsevier]
- Published
- 2006
- Full Text
- View/download PDF
57. Variation in Reproductive Success Across Captive Populations
- Subjects
PHOTOPERIODIC REGULATION ,husbandry ,zebra finch ,captive breeding ,PARENTAL INVESTMENT ,reproductive failure ,SEXUAL SELECTION ,model species ,MATE CHOICE ,captivity ,domestication ,EXPERIMENTAL MANIPULATION ,GLOBAL BIODIVERSITY ,INCUBATION BEHAVIOR ,MALE ZEBRA FINCHES ,CORTICOSTERONE LEVELS ,Taeniopygia guttata ,FINCH TAENIOPYGIA-GUTTATA - Abstract
Our understanding of fundamental organismal biology has been disproportionately influenced by studies of a relatively small number of model' species extensively studied in captivity. Laboratory populations of model species are commonly subject to a number of forms of past and current selection that may affect experimental outcomes. Here, we examine these processes and their outcomes in one of the most widely used vertebrate species in the laboratory - the zebra finch (Taeniopygia guttata). This important model species is used for research across a broad range of fields, partly due to the ease with which it can be bred in captivity. However despite this perceived amenability, we demonstrate extensive variation in the success with which different laboratories and studies bred their subjects, and overall only 64% of all females that were given the opportunity, bred successfully in the laboratory. We identify and review several environmental, husbandry, life-history and behavioural factors that potentially contribute to this variation. The variation in reproductive success across individuals could lead to biases in experimental outcomes and drive some of the heterogeneity in research outcomes across studies. The zebra finch remains an excellent captive animal system and our aim is to sharpen the insight that future studies of this species can provide, both to our understanding of this species and also with respect to the reproduction of captive animals more widely. We hope to improve systematic reporting methods and that further investigation of the issues we raise will lead both to advances in our fundamental understanding of avian reproduction as well as to improvements in future welfare and experimental efficiency.
- Published
- 2017
58. The use of incubation behavior to adjust avian reproductive costs after egg laying.
- Author
-
Wiebe, K. L. and Martin, K.
- Subjects
BIRD reproduction ,EGG incubation ,ANIMAL breeding ,ANIMAL clutches ,FORAGING behavior - Abstract
Reproduction in birds requires the input of time and energy during discrete breeding phases leading to investment trade-offs between laying date, clutch size, body mass, and incubation constancy. We investigated costs during incubation by experimentally enlarging 25 clutches of white-tailed ptarmigan Lagopus leucurus. The experiment was conducted in 2 years, one with harsh weather that forced a natural delay in reproduction. When forced to delay egg-laying, females began incubation with poorer body condition and foraged more during incubation. Rates of mass loss during incubation were not affected by clutch enlargement, and did not differ between harsh and benign years; however, females that were heavier at the start of incubation lost more mass than lighter females. Clutch-enlarged females had reduced nest attendance compared to control birds in both years and incubation periods increased by up to 2 days relative to controls. In the harsh year, there was a trend for clutch-enlarged females to have lower nest success, but there was no effect on overwinter survival. Different behavioral responses by females in the 2 years showed that incubation costs may depend on other factors such as female quality, food supply, or weather conditions. Incubation is a dynamic period during which birds may adjust energy balances by varying body condition and food intake. [ABSTRACT FROM AUTHOR]
- Published
- 2000
- Full Text
- View/download PDF
59. Predation risk affects egg-ejection but not recognition in blackbirds
- Author
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Juan Diego Ibáñez-Álamo, Manuel Soler, Antonio Jesús Serrano-Martín, Gianluca Roncalli, Francisco Ruiz-Raya, and Tieleman lab
- Subjects
0106 biological sciences ,Offspring ,Zoology ,Biology ,HOSTS ,010603 evolutionary biology ,01 natural sciences ,BROOD PARASITISM ,Predation ,Nest ,INCUBATION BEHAVIOR ,PHENOTYPIC PLASTICITY ,Seasonal breeder ,Life-history ,0501 psychology and cognitive sciences ,050102 behavioral science & comparative psychology ,Predator ,Ecology, Evolution, Behavior and Systematics ,Brood parasite ,REED WARBLERS ,BIRDS ,Nest predation ,05 social sciences ,Adult predation ,Brood ,CUCULUS-CANORUS ,REJECTION ,Animal ecology ,Animal Science and Zoology ,CUCKOO ,Egg ejection - Abstract
Predation and brood parasitism have critical effects on the fitness of animals, but few studies have focused on the potential interactions between these two important selective forces. For instance, the egg-rejection process, one of the most important defensive responses of hosts against brood parasites, may be affected by variation in predation risk, which might divert their focus from the nest (present reproduction) to self-maintenance (future reproduction). In this study we explore the effect of predation risk on the first two stages of the egg-rejection process (judgment and decision) and if this potential effect changes according to the target of predation (adults vs offspring). To do so, we experimentally parasitized nests of common blackbirds (Turdus merula) with mimetic model eggs simultaneously exposing them to different predation-risk situations: adult predator, egg predator, and control. We found that predation risk did not affect egg recognition. Nevertheless, blackbirds exposed to the adult predation risk showed a significant reduction in the ejection rate, particularly at the end of the breeding season. We discuss our results in relation to the egg-rejection process and life-history theory. Our findings suggest that a predation risk directed to adults of parasitized nests, but not to their offspring, can play an important role in the blackbirds' decision-making influencing the ejection of parasitic eggs, consequently affecting the outcome of the evolutionary relationship between brood parasites and their hosts.Significance statementBrood parasitism and predation are two important selective forces in nature, which play a crucial role in the evolutionary process in birds. Despite this, few studies have explored the possible relationships between these two selective pressures. In particular, the possibility that predation risk affects host defenses against brood parasites has usually been neglected. Predation risk could influence the egg-rejection process, which is the main defensive measure adopted by hosts once they have been parasitized. In this study we showed that predation risk seems to modulate host defenses against brood parasites in common blackbirds, but depending on the threat posed by predators. In particular, adult predation risk affects the second stage of the egg-rejection process reducing the ejection rate of parasitic eggs. Our results open a new line of research in brood parasitism studies, demonstrating that external stimuli to brood parasite-host systems can influence egg-rejection decisions.
- Published
- 2019
60. Female incubation attendance and nest vigilance reflect social signaling capacity: a field experiment
- Author
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Plaza, Mireia, Cantarero, Alejandro, Cuervo, José Javier, and Moreno, Juan
- Published
- 2018
- Full Text
- View/download PDF
61. Female incubation attendance and nest vigilance reflect social signaling capacity: a field experiment
- Abstract
Due to the reduced conspicuousness of female signals, their evolution has traditionally been interpreted as a by-product of sexual or natural selection in males. Recent studies have argued that they may be the result of sexual or social selection acting on females. Here, we explored the role of the white wing patch during the incubation period in female-female competition contests in a migratory cavity-nesting songbird, the pied flycatcher Ficedula hypoleuca. At this stage, female investment is crucial for offspring survival, while competition among females for nest cavities is still operating. We experimentally performed an extreme reduction of signaling capacity by covering the wing patch with dark paint in a group of females and compared their incubation attendance and social interaction patterns (vigilance and aggression at the nest as defense variables) during simulated territorial intrusion tests with female decoys, with those of an unmanipulated group of females. Tests were performed both before and after the manipulation. We hypothesized that these patches constitute signals of social dominance in female-female interactions that allow them to maintain high levels of incubation attendance by reducing the need for vigilance. We found a marked decrease in incubation attendance in experimental females after manipulation, a change that was not found in the control group. Moreover, vigilance decreased in the control group after the manipulation, a change not detected in manipulated females. No effects on aggressive nest defense were found. Female wing ornamental traits would act as a badge of status in social interactions allowing more intense incubation and reduced vigilance. Implications of social interactions on incubation patterns should be incorporated in future studies. Significance statement: Animals can transmit information to the others through different traits. Ornamental signals have been proposed as status indicators in social interactions in
- Published
- 2018
62. Aggression, incubation behaviour and egg-loss in macaroni penguins, Eudyptes chrysolophus, at south Georgia
- Author
-
Williams, T. D.
- Published
- 1989
- Full Text
- View/download PDF
63. Incubation behavior, brood patch formation and obligate brood reduction in fiordland crested penguins
- Author
-
St. Clair, C. C.
- Published
- 1992
64. Female incubation attendance and nest vigilance reflect social signaling capacity: a field experiment
- Author
-
Juan Moreno, José Javier Cuervo, Alejandro Cantarero, Mireia Plaza, Ministerio de Economía y Competitividad (España), and Ministerio de Educación (España)
- Subjects
0106 biological sciences ,Zoology ,Female ornamental traits ,010603 evolutionary biology ,01 natural sciences ,Social interaction ,Nest ,medicine ,0501 psychology and cognitive sciences ,050102 behavioral science & comparative psychology ,Incubation ,Ecology, Evolution, Behavior and Systematics ,Experimental patch manipulation ,biology ,Aggression ,05 social sciences ,Ficedula ,Incubation behavior ,Signaling status ,biology.organism_classification ,Social relation ,Nest vigilance ,Dominance (ethology) ,Vigilance (behavioural ecology) ,Animal ecology ,Animal Science and Zoology ,medicine.symptom - Abstract
Due to the reduced conspicuousness of female signals, their evolution has traditionally been interpreted as a by-product of sexual or natural selection in males. Recent studies have argued that they may be the result of sexual or social selection acting on females. Here, we explored the role of the white wing patch during the incubation period in female-female competition contests in a migratory cavity-nesting songbird, the pied flycatcher Ficedula hypoleuca. At this stage, female investment is crucial for offspring survival, while competition among females for nest cavities is still operating. We experimentally performed an extreme reduction of signaling capacity by covering the wing patch with dark paint in a group of females and compared their incubation attendance and social interaction patterns (vigilance and aggression at the nest as defense variables) during simulated territorial intrusion tests with female decoys, with those of an unmanipulated group of females. Tests were performed both before and after the manipulation. We hypothesized that these patches constitute signals of social dominance in female-female interactions that allow them to maintain high levels of incubation attendance by reducing the need for vigilance. We found a marked decrease in incubation attendance in experimental females after manipulation, a change that was not found in the control group. Moreover, vigilance decreased in the control group after the manipulation, a change not detected in manipulated females. No effects on aggressive nest defense were found. Female wing ornamental traits would act as a badge of status in social interactions allowing more intense incubation and reduced vigilance. Implications of social interactions on incubation patterns should be incorporated in future studies. Significance statement: Animals can transmit information to the others through different traits. Ornamental signals have been proposed as status indicators in social interactions in birds in many studies. Although some of them concern their function and evolution in females, only a few have been focused on their role during incubation. Our experimental study suggests that the female’s white wing patch in pied flycatchers acts as a badge of dominance status in social encounters. Thus, dominant females may enforce respect from competitors through signaling, thereby being able to reduce vigilance at the nest with positive effects on incubation efficiency. Implications of social status for incubation patterns should be considered in future studies as an additional factor modulating this crucial parental activity., This study was financed by project CGL2013-48193-C3-3-P to JM from Spanish Ministerio de Economía y Competitividad. MP and AC were supported by FPI and FPU grants from Ministerio de Economía y Competitividad and Ministerio de Educación, respectively.
- Published
- 2018
65. Diurnal and reproductive stage-dependent variation of parental behaviour in captive zebra finches
- Author
-
Douwe Mul, Tamás Székely, Jan Komdeur, Gregory Milne, Nina Kusche, Ákos Pogány, Sabine Nanuru, Ádám Miklósi, Boglárka Morvai, and Komdeur lab
- Subjects
Male ,0106 biological sciences ,TAENIOPYGIA-GUTTATA ,Sexual Selection ,Time Factors ,lcsh:Medicine ,Breeding ,Polynomials ,01 natural sciences ,Nesting Behavior ,Sexual conflict ,INCUBATION BEHAVIOR ,Natural Selection ,lcsh:Science ,Incubation ,TEMPERATURE ,education.field_of_study ,Multidisciplinary ,ATTRACTIVENESS ,Animal Behavior ,biology ,Ecology ,Reproduction ,05 social sciences ,WILD ,Animal Models ,Cameras ,SEXUAL CONFLICT ,FEMALE ,Optical Equipment ,Sexual selection ,Vertebrates ,Physical Sciences ,Engineering and Technology ,Research Article ,Evolutionary Processes ,Parenting Behavior ,Population ,Equipment ,Animal Sexual Behavior ,Research and Analysis Methods ,010603 evolutionary biology ,DIFFERENTIAL-ALLOCATION ,Birds ,Model Organisms ,Captive breeding ,Genetics ,Animals ,0501 psychology and cognitive sciences ,050102 behavioral science & comparative psychology ,education ,Nest box ,Zebra Finch ,COOPERATION ,Behavior ,Evolutionary Biology ,Population Biology ,lcsh:R ,Organisms ,Biology and Life Sciences ,biology.organism_classification ,Algebra ,BIPARENTAL CARE ,Amniotes ,lcsh:Q ,Finches ,Diurnal Variations ,Zoology ,Paternal care ,Mathematics ,Population Genetics ,Taeniopygia ,Demography - Abstract
Parental care plays a key role in ontogeny, life-history trade-offs, sexual selection and intrafamilial conflict. Studies focusing on understanding causes and consequences of variation in parental effort need to quantify parental behaviour accurately. The applied methods are, however, diverse even for a given species and type of parental effort, and rarely validated for accuracy. Here we focus on variability of parental behaviour from a methodological perspective to investigate the effect of different samplings on various estimates of parental effort. We used nest box cameras in a captive breeding population of zebra finches, Taeniopygia guttata, a widely used model system of sexual selection, intra-familial dynamics and parental care. We investigated diurnal and reproductive stage-dependent variation in parental effort (including incubation, brooding, nest attendance and number of feedings) based on 12h and 3h continuous video-recordings taken at various reproductive stages. We then investigated whether shorter (1h) sampling periods provided comparable estimates of overall parental effort and division of labour to those of longer (3h) sampling periods. Our study confirmed female-biased division of labour during incubation, and showed that the difference between female and male effort diminishes with advancing reproductive stage. We found individually consistent parental behaviours within given days of incubation and nestling provisioning. Furthermore, parental behaviour was consistent over the different stages of incubation, however, only female brooding was consistent over nestling provisioning. Parental effort during incubation did not predict parental effort during nestling provisioning. Our analyses revealed that 1h sampling may be influenced heavily by stochastic and diurnal variation. We suggest using a single longer sampling period (3h) may provide a consistent and accurate estimate for overall parental effort during incubation in zebra finches. Due to the large within-individual variation, we suggest repeated longer sampling over the reproductive stage may be necessary for accurate estimates of parental effort post-hatching.
- Published
- 2016
66. Variation in Reproductive Success Across Captive Populations: Methodological Differences, Potential Biases and Opportunities
- Author
-
Malika Ihle, Ingrid C.A. Boucaud, Joanna Rutkowska, Susan D. Healy, Neeltje J. Boogert, Laura L. Hurley, Samuel C. Andrew, Larissa Trompf, Tony D. Williams, John P. Swaddle, Marie-Jeanne Holveck, Wolfgang Forstmeier, Stephanie Bittner, Davina L. Hill, Maeve McMahon, Carlos Alonso-Alvarez, E. Tobias Krause, Meghan S. Martin-Wintle, Ondi L. Crino, Marc Naguib, Katherine L. Buchanan, Avelyne S. Villain, Katharina Riebel, Ida E. Bailey, Nora H. Prior, Michael Tobler, Ana Angela Romero-Haro, Luke S.C. McCowan, Valeria Marasco, Nick J. Royle, Ian R. Hartley, David F. Clayton, Mylene M. Mariette, Clémentine Vignal, Claire W. Varian-Ramos, Barbara A. Caspers, Andreas Nord, Lauren M. Guillette, Pat Monaghan, Mariusz Cichoń, Elizabeth Adkins-Regan, Dominique A. Potvin, Simon C. Griffith, Ruedi G. Nager, Sébastien Derégnaucourt, Michael Briga, Fumiaki Y. Nomano, Mark C. Mainwaring, Winnie Boner, Peri E. Bolton, Wiebke Schuett, Department of Brain, Behaviour and Evolution, Macquarie University, Department of Psychology, Cornell University [New York], Department of Neurobiology and Behavior, Instituto de Investigación en Recursos Cinegéticos (IREC), Institute of Biodiversity, University of Glasgow, Institut des Neurosciences Paris-Saclay (NeuroPSI), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Ecologie et Neuro-Ethologie Sensorielles (ENES), Université Jean Monnet [Saint-Étienne] (UJM), Institute of Environmental Sciences, Uniwersytet Jagielloński w Krakowie = Jagiellonian University (UJ), Max Planck Institute for Ornithology, Max-Planck-Gesellschaft, Laboratoire Éthologie Cognition Développement (LECD), Université Paris Nanterre (UPN), Department of Animal and Plant Sciences [Sheffield], University of Sheffield [Sheffield], Lancaster Environment Centre, Lancaster University, School of animal, Plant and Environmental Sciences, University of the Witwatersrand [Johannesburg] (WITS), 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), Institute of Biodiversity, Animal Health & Comparative Medicine, Department of Zoology (The University of British Columbia), University of British Columbia (UBC), Cornell University, Institut des Neurosciences de Paris-Saclay (Neuro-PSI), Jagiellonian University [Krakow] (UJ), 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), University of St Andrews. School of Biology, University of St Andrews. Institute of Behavioural and Neural Sciences, University of St Andrews. Centre for Social Learning & Cognitive Evolution, University of St Andrews. Centre for Biological Diversity, 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 de Recherche pour le Développement (IRD [France-Sud]), 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), Université Jean Monnet - Saint-Étienne (UJM), 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), and 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])
- Subjects
0106 biological sciences ,0301 basic medicine ,PHOTOPERIODIC REGULATION ,Range (biology) ,QH301 Biology ,[SDV]Life Sciences [q-bio] ,Captivity ,[SHS.PSY]Humanities and Social Sciences/Psychology ,zebra finch ,reproductive failure ,01 natural sciences ,Z60 ,SEXUAL SELECTION ,Behavioral Ecology ,Z609 ,INCUBATION BEHAVIOR ,ComputingMilieux_MISCELLANEOUS ,biology ,PE&RC ,3. Good health ,MATE CHOICE ,model species ,Gedragsecologie ,captivity ,Sexual selection ,MALE ZEBRA FINCHES ,CORTICOSTERONE LEVELS ,husbandry ,NDAS ,Zoology ,captive breeding ,010603 evolutionary biology ,03 medical and health sciences ,QH301 ,EXPERIMENTAL MANIPULATION ,domestication ,Captive breeding ,Parental investment ,Zebra finch ,Taeniopygia guttata ,Ecology, Evolution, Behavior and Systematics ,FINCH TAENIOPYGIA-GUTTATA ,Zebra finch ,Reproductive success ,zebra finch ,PARENTAL INVESTMENT ,biology.organism_classification ,030104 developmental biology ,GLOBAL BIODIVERSITY ,Evolutionary biology ,WIAS ,Animal Science and Zoology ,Taeniopygia - Abstract
Our understanding of fundamental organismal biology has been disproportionately influenced by studies of a relatively small number of ‘model’ species extensively studied in captivity. Laboratory populations of model species are commonly subject to a number of forms of past and current selection that may affect experimental outcomes. Here, we examine these processes and their outcomes in one of the most widely used vertebrate species in the laboratory – the zebra finch (Taeniopygia guttata). This important model species is used for research across a broad range of fields, partly due to the ease with which it can be bred in captivity. However despite this perceived amenability, we demonstrate extensive variation in the success with which different laboratories and studies bred their subjects, and overall only 64% of all females that were given the opportunity, bred successfully in the laboratory. We identify and review several environmental, husbandry, life-history and behavioural factors that potentially contribute to this variation. The variation in reproductive success across individuals could lead to biases in experimental outcomes and drive some of the heterogeneity in research outcomes across studies. The zebra finch remains an excellent captive animal system and our aim is to sharpen the insight that future studies of this species can provide, both to our understanding of this species and also with respect to the reproduction of captive animals more widely. We hope to improve systematic reporting methods and that further investigation of the issues we raise will lead both to advances in our fundamental understanding of avian reproduction as well as to improvements in future welfare and experimental efficiency.
- Published
- 2016
67. Quantitative proteomic analysis of chicken serum reveals key proteins affecting follicle development during reproductive phase transitions.
- Author
-
Shen X, Bai X, Luo C, Jiang D, Li X, Zhang X, Tian Y, and Huang Y
- Subjects
- Animals, Female, Proteomics, Avian Proteins genetics, Chickens genetics, Ovarian Follicle growth & development, Proteome, Reproduction genetics
- Abstract
Avian reproductive behavior is regulated through the neuroendocrine system. The transition from laying to brooding is strictly controlled by the hypothalamus-pituitary-gonadal (HPG) axis. Cross talk on the HPG axis relies on the circulatory system, where the dynamics of serum proteins can be observed during different reproductive phases. Some canonical hormones, such as prolactin and luteinizing hormone, play important roles in the transition through reproductive phases. However, little is known at the whole-proteome level. To discover novel serum proteins, we employed isobaric tags for relative and absolute quantification to assay the serum proteome during different reproductive phases in chicken. We identified a total of 1,235 proteins from chicken serum; 239 of these proteins showed differential expression between the laying and brooding stages, including a low concentration of steroid metabolism-related proteins and a high concentration of calcium signaling-related proteins (fold change ≥1.5 or ≤0.66; P < 0.05). Pathway analysis and protein-protein interaction networks predicated the difference in follicle development between the brooding stage and laying stages and were related to the 14-3-3 protein family, which is associated with oocyte meiosis and maturation. Together, these results provided a proteomics foundation for investigating the dynamic changes taking place in the circulatory system during reproductive phase transition, and also uncovered new insights regarding follicle development that underlie the avian reproductive cycle., (Copyright © 2020. Published by Elsevier Inc.)
- Published
- 2021
- Full Text
- View/download PDF
68. Decreased prolactin levels reduce parental commitment, egg temperatures, and breeding success of incubating male Adélie penguins
- Author
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Olivier Chastel, Anne-Mathilde Thierry, Thierry Raclot, Sylvie Massemin, Yves Handrich, Sophie Brajon, Département Ecologie, Physiologie et Ethologie (DEPE-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre d'études biologiques de Chizé (CEBC), and Centre National de la Recherche Scientifique (CNRS)
- Subjects
Male ,0106 biological sciences ,medicine.medical_specialty ,Egg rotation rate ,Zygote ,Down-Regulation ,Zoology ,Parental care ,Biology ,010603 evolutionary biology ,01 natural sciences ,Nesting Behavior ,Incubation period ,03 medical and health sciences ,Behavioral Neuroscience ,chemistry.chemical_compound ,Endocrinology ,Nest ,Corticosterone ,Internal medicine ,medicine ,Animals ,Maternal Behavior ,Parental investment ,Incubation ,Paternal Behavior ,Bromocriptine ,030304 developmental biology ,0303 health sciences ,Endocrine and Autonomic Systems ,Hatching ,Reproduction ,Temperature ,Incubation behavior ,Seabird ,Spheniscidae ,Pygoscelis adeliae ,Prolactin ,chemistry ,[SDE]Environmental Sciences ,Female ,Egg temperature ,Paternal care - Abstract
International audience; Hormones regulate many aspects of an individual's phenotype, including various physiological and behavioral traits. Two hormones have been described as important players in the regulation of parental investment in birds: the glucocorticoid hormone corticosterone and prolactin, a pituitary hormone, widely involved in mediating parental behavior. In comparison with corticosterone, the role of prolactin on parental investment remains poorly documented, and most studies so far have been correlative. In this study, the effects of an experimental decrease of prolactin levels on the incubation behavior of a long-lived seabird species were assessed. Male Adélie penguins were treated with self-degradable bromocriptine pellets, inhibiting prolactin secretion. Filming and subsequent video analysis allowed the determination of a behavioral time budget for birds and their position on the nest, while dummy eggs recorded incubation parameters. Incubation duration and breeding success at hatching were also monitored. As expected, bromocriptine-treatment significantly decreased plasma prolactin levels, but did not affect corticosterone levels. The behavioral time budget of penguins was not affected by the treatment. However, treated birds spent significantly more time in an upright position on the nest. These birds also incubated their eggs at lower temperatures and turned their eggs more frequently than controls, resulting in a lengthened incubation period. Despite this, the treatment was insufficient to trigger nest desertion and eggs of treated birds still hatched, indicating that several endocrine signals are required for the induction of nest abandonment. We suggest that the decreased prolactin levels in treated birds offset their timeline of breeding, so that birds displayed behavior typical of early incubation.
- Published
- 2013
69. Biparental Care in Birds: Mechanisms Controlling Incubation Bout Duration
- Author
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Silver, R, Balthazart, J., editor, Pröve, E., editor, and Gilles, R., editor
- Published
- 1983
- Full Text
- View/download PDF
70. Incubation behavior adjustments, driven by ambient temperature variation, improve synchrony between hatch dates and caterpillar peak in a wild bird population
- Author
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Emily G, Simmonds, Ben C, Sheldon, Tim, Coulson, and Ella F, Cole
- Subjects
climate change ,incubation behavior ,great tits (Parus major) ,mismatch ,phenology ,phenotypic plasticity ,Original Research - Abstract
For organisms living in seasonal environments, synchronizing the peak energetic demands of reproduction with peak food availability is a key challenge. Understanding the extent to which animals can adjust behavior to optimize reproductive timing, and the cues they use to do this, is essential for predicting how they will respond to future climate change. In birds, the timing of peak energetic demand is largely determined by the timing of clutch initiation; however, considerable alterations can still occur once egg laying has begun. Here, we use a wild population of great tits (Parus major) to quantify individual variation in different aspects of incubation behavior (onset, duration, and daily intensity) and conduct a comprehensive assessment of the causes and consequences of this variation. Using a 54‐year dataset, we demonstrate that timing of hatching relative to peak prey abundance (synchrony) is a better predictor of reproductive success than clutch initiation or clutch completion timing, suggesting adjustments to reproductive timing via incubation are adaptive in this species. Using detailed in‐nest temperature recordings, we found that postlaying, birds improved their synchrony with the food peak primarily by varying the onset of incubation, with duration changes playing a lesser role. We then used a sliding time window approach to explore which spring temperature cues best predict variance in each aspect of incubation behavior. Variation in the onset of incubation correlated with mean temperatures just prior to laying; however, incubation duration could not be explained by any of our temperature variables. Daily incubation intensity varied in response to daily maximum temperatures throughout incubation, suggesting female great tits respond to temperature cues even in late stages of incubation. Our results suggest that multiple aspects of the breeding cycle influence the final timing of peak energetic demand. Such adjustments could compensate, in part, for poor initial timing, which has significant fitness impacts.
- Published
- 2016
71. Revisiting the influence of aggressive interactions on the survival of the first‐laid egg in crested penguins (genus Eudyptes).
- Author
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Massaro, Melanie, Davidson, R. Scott, Freire, Rafael, and Davis, Lloyd S.
- Subjects
- *
BIRD eggs , *EGG incubation , *EGGS , *PENGUINS , *SURVIVAL analysis (Biometry) , *NESTS - Abstract
Crested penguins Eudyptes spp. have evolved a unique form of breeding in which the first of two eggs laid is much smaller than the second and has a higher likelihood of being lost during egg laying and incubation. In this study, we quantified aggressive behaviour in nesting Snares penguins and undertook an egg survival analysis to examine which factors influence egg loss. During 120 h of observation of 50 nests, we recorded a total of 300 aggressive events in which females were repeatedly pecked, bitten and beaten. Aggressive events lasted from less than a minute to up to 55 min (mean 4.6 ± 7.4 min). Single males were the aggressor in 75% of aggressive events and in 50.7% of aggressive events the aggressor was identified as a neighbouring, breeding male. A greater percentage of the small first eggs (34%) were lost than the large second eggs (4%). We found that egg mortality was influenced by 1) whether the other egg within a nest had hatched, 2) who was present at the nest (father, mother or both) and 3) the average duration of aggressive events on the nest. When one egg within a nest had hatched, the other egg had a vastly increased mortality risk irrespective of aggression. However, long, aggressive events directed towards females after their partners had gone foraging, also increased the probability of egg loss. We suggest that the prolonged nest attendance by breeding males well beyond egg laying is in response to the high frequency of aggressive behaviour during this time. Our data show that A‐egg losses occur due to intraspecific aggression in this species. Further research is needed to clarify whether aggressive behaviour in breeding crested penguins is modulated by elevated testosterone levels in the males and whether any reproductive benefits accrue to the aggressors. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
72. Antimicrobial activity of nest-lining feathers is enhanced by breeding activity in avian nests.
- Author
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Ruiz-Castellano, Cristina, Ruiz-Rodríguez, Magdalena, Tomás, Gustavo, and Soler, Juan José
- Subjects
- *
NEST building , *FEATHERS , *BIRD breeding , *STURNUS unicolor , *BACTERIAL colonies , *BACTERIAL communities , *EGGSHELLS - Abstract
The use of feathers as nest material has been proposed as a kind of self-medication strategy because antimicrobial-producing microorganisms living on feathers may defend offspring against pathogenic infections. In this case, it is expected that density of antimicrobial-producing bacteria, and their antimicrobial effects, are higher in feathers that line the nests than in eggshells. Moreover, we know that feather pigmentation and breeding activity may influence density and antimicrobial production of bacteria. To test these predictions, we analyzed bacterial densities and antimicrobial activity of bacterial colonies isolated from bird eggshells and nest-lining feathers against bacterial strains comprising potential pathogens. Samples were collected from spotless starling (Sturnus unicolor) nests, and from artificial nests to isolate the effects of breeding activity on bacterial communities. The composition of feathers lining the nests was experimentally manipulated to create groups of nests with pigmented feathers, with unpigmented feathers, with both types of feathers or without feathers. Although we did not detect an effect of experimental feather treatments, we found that bacterial colonies isolated from feathers were more active against the tested bacterial strains than those isolated from eggshells. Moreover, bacterial density on feathers, keratinolytic bacteria on eggshells and antimicrobial activity of colonies isolated were higher in starling nests than in artificial nests. These results suggest that antimicrobial activity of bacteria growing on nest-lining feathers would be one of the mechanisms explaining the previously detected antimicrobial effects of this material in avian nests, and that breeding activity results in nest bacterial communities with higher antimicrobial activity. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
73. The Influence of Weather on Shorebird Incubation
- Author
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Smith, Paul A., author, Dauncey, Sarah A., author, Gilchrist, H. Grant, author, and Forbes, Mark R., author
- Published
- 2012
- Full Text
- View/download PDF
74. Aspects of breeding biology of Chiguanco Thrush at Chaco Serrano of Córdoba, Argentina
- Author
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Vergara Tabares, David Lautaro and Peluc, Susana Ines
- Subjects
purl.org/becyt/ford/1 [https] ,clutch size ,Ciencias Biológicas ,incubation behavior ,Ecología ,purl.org/becyt/ford/1.6 [https] ,CIENCIAS NATURALES Y EXACTAS ,nest site ,nest predation - Abstract
Some parameters of the breeding biology of the Chiguanco Thrush (Turdus chiguanco) are described in Chaco Serrano forest of Córdoba, Argentina. Searching and monitoring of the Chiguanco Thrush nests were performed between October 2010 and February 2011. We monitored 35 nests of this species. Seven species of trees and bushes, two of them exotics, were used for nesting, mainly at medium height of the plant. Clutch size ranged between two to three eggs; only two nests were parasitized by the Shiny Cowbird (Molothrus bonariensis). The incubation period was 11–12 days long and nestlings hatched asynchronously in clutches of three eggs. Only 10% of nests were successful. From the unsuccessful nests, 97% were predated. The daily rate of nest predation was 0.86 ± 0.02. Only females were responsible for incubation. Females incubated intermittently for periods of 16:24 ± 3:16 min, and took recess bouts of 13:11 ± 2:20 min Describimos parámetros de la biología reproductiva del Zorzal Chiguanco (Turdus chiguanco) en el Bosque Serrano de Córdoba, Argentina. Buscamos y monitoreamos nidos de la citada especie entre octubre 2010 y febrero 2011. Se siguieron un total de 35 nidos de esta especie. Siete especies de árboles y arbustos, dos de ellas exóticas, fueron usadas para nidificar principalmente a una altura media en la planta. El tamaño de la puesta osciló entre dos y tres huevos; sólo dos nidos fueron parasitados por el Tordo Renegrido (Molothrus bonariensis). El período de incubación fue de 11–12 días, y el nacimiento de los pichones fue asincrónico sólo en nidos con 3 huevos. Un 10% del total de nidos fueron exitosos. De los nidos no exitosos, la principal causa de fallo fue la depredación (97%). La tasa diaria de depredación de nidos fue de 0,86 ± 0,02. Sólo las hembras se encargaron de la incubación. Las hembras incubaron intermitentemente por períodos de 16:24 ± 3:16 min, tomando recesos fuera del nido de 13:11 ± 2:20 min. Fil: Vergara Tabares, David Lautaro. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; Argentina. Universidad Nacional de Cordoba. Facultad de Cs.exactas Fisicas y Naturales. Centro de Zoologia Aplicada; Argentina Fil: Peluc, Susana Ines. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; Argentina. Universidad Nacional de Cordoba. Facultad de Cs.exactas Fisicas y Naturales. Centro de Zoologia Aplicada; Argentina
- Published
- 2013
75. Faltering lemming cycles reduce productivity and population size of a migratory Arctic goose species
- Author
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Nicole Feige, Yakov I. Kokorev, B.S. Ebbinge, Silke Bauer, Igor Yu. Popov, Bart A. Nolet, and Animal Ecology (AnE)
- Subjects
Avian clutch size ,clutch size ,nyctea-scandiaca nests ,Climate Change ,Population ,Population Dynamics ,Bird migration ,b.-bernicla ,Biology ,Population density ,dark-bellied brent goose ,Animal migration ,Anseriformes ,reproductive-performance ,Animals ,education ,Ecology, Evolution, Behavior and Systematics ,trophic interactions ,Population Density ,education.field_of_study ,northeastern taimyr ,Ecology ,Arvicolinae ,Population size ,brent geese ,Siberia ,Density dependence ,density dependence ,reproductive success ,geese branta-bernicla ,international ,climate-change ,Population cycle ,Dierecologie ,Animal Science and Zoology ,Animal Migration ,Population Ecology ,Seasons ,Animal Ecology ,incubation behavior ,bird migration - Abstract
1. The huge changes in population sizes of Arctic-nesting geese offer a great opportunity to study population limitation in migratory animals. In geese, population limitation seems to have shifted from wintering to summering grounds. There, in the Arctic, climate is rapidly changing, and this may impact reproductive performance, and perhaps population size of geese, both directly (e.g. by changes in snow melt) or indirectly (e.g. by changes in trophic interactions). 2. Dark-bellied brent geese (Branta bernicla bernicla L.) increased 20-fold since the 1950s. Its reproduction fluctuates strongly in concert with the 3-year lemming cycle. An earlier analysis, covering the growth period until 1988, did not find evidence for density dependence, but thereafter the population levelled off and even decreased. The question is whether this is caused by changes in lemming cycles, population density or other factors like carry-over effects. 3. Breeding success was derived from proportions of juveniles. We used an information-theoretical approach to investigate which environmental factors best explained the variation in breeding success over nearly 50 years (1960–2008). We subsequently combined GLM predictions of breeding success with published survival estimates to project the population trajectory since 1991 (year of maximum population size). In this way, we separated the effects of lemming abundance and population density on population development. 4. Breeding success was mainly dependent on lemming abundance, the onset of spring at the breeding grounds, and the population size of brent goose. No evidence was found for carryover effects (i.e. effects of conditions at main spring staging site). Negative density dependence was operating at a population size above c. 200 000 individuals, but the levelling off of the population could be explained by faltering lemming cycles alone. 5. Lemmings have long been known to affect population productivity of Arctic-nesting migratory birds and, more recently, possibly population dynamics of resident bird species, but this is the first evidence for effects of lemming abundance on population size of a migratory bird species. Why lemming cycles are faltering in the last two decades is unclear, but this may be associated with changes in winter climate at Taimyr Peninsula (Siberia). Key-words: bird migration, climate change, dark-bellied brent goose, density dependence, reproductive success
- Published
- 2013
76. Effects of environmental and social factors on incubation behavior, endocrinological parameters, and production traits in turkey hens (Meleagris gallopavo)
- Author
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Daniel Guemene, Marie-Annick Richard-Yris, Grégoy Bédécarrats, Unité de Recherches Avicoles (URA), Institut National de la Recherche Agronomique (INRA), Animal and Poultry Science, University of Guelph, Recherches Avicoles (SRA), Ethologie, éVolution, Ecologie (EVE), Ethologie animale et humaine (EthoS), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Station de Recherches Avicoles (SRA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), ProdInra, Migration, Normandie Université (NU)-Normandie Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Turkeys ,Light ,[SDV]Life Sciences [q-bio] ,Oviposition ,Photoperiod ,Radioimmunoassay ,turkey hens ,Environment ,Egg laying ,03 medical and health sciences ,Eating ,Random Allocation ,Animal science ,environmental factors ,Animals ,[SDV.SA.SPA] Life Sciences [q-bio]/Agricultural sciences/Animal production studies ,Social Behavior ,Incubation ,ComputingMilieux_MISCELLANEOUS ,030304 developmental biology ,photoperiodism ,0303 health sciences ,Analysis of Variance ,biology ,Behavior, Animal ,[SDV.BA]Life Sciences [q-bio]/Animal biology ,Body Weight ,0402 animal and dairy science ,04 agricultural and veterinary sciences ,General Medicine ,Plasma levels ,Luteinizing Hormone ,biology.organism_classification ,040201 dairy & animal science ,Housing, Animal ,Prolactin ,Broodiness ,[SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies ,FACTEUR LIE AU SITE ,Animal Science and Zoology ,Female ,incubation behavior ,Luteinizing hormone ,Meleagris gallopavo - Abstract
WOS:A1997XR96600019; International audience; Hens raised in three different environments were assessed for changes in egg production performance, the rate of incubation behavior expression, and plasma levels of luteinizing hormone (LH) and prolactin for 20 wk following the laying of the first egg. The environments were individual (IFP) or collective floor pens (CFP) and individual battery cages (Cp and Cnp). The hens from three experimental groups (IFP, CFP, and Cp) were transferred from a short (6 h) to a long (14 h) photoperiod, whereas the ones from the remnant (Cnp) were left under a short one. Increase of the photoperiod induced significant increases (P \textless 0.05) in levels of prolactin and LH after I d, and resulted in the onset of egg laying in a delay of 14 d in all groups. However, the overall egg laying performance was highest for the IFP hens. The CFP and IFP hens laid 98 and 24% of their eggs inside the nest boxes, respectively. The hens raised in battery cages did not express incubation behavior, whereas 50 and 33%, respectively, of the CFP and IFP hens did. During the Ist wk of egg laying, levels of prolactin increased for all photostimulated hens but to a greater extent for CFP hens. Higher increases in levels of prolactin were associated with the expression of incubation behavior; however, prolactin levels of nonincubating laying hens were also higher under the CFP treatment. It appears that the rate of expression of incubation behavior, as well as changes in the plasma levels of prolactin and LH throughout an egg production period, are dependent upon rearing conditions in turkey hens.
- Published
- 1997
77. How heavily does the hen sit on her eggs during incubation?
- Author
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Midtgård, U.
- Abstract
Incubating hens do not sit with their entire body weight on the eggs. The weight applied to the clutch is carefully regulated and depends on the number of eggs in the nest. Sensory input from the thoracic skin (brood patch) of the incubating hen appears to be important for controlling the tightness of sit. [ABSTRACT FROM AUTHOR]
- Published
- 1987
- Full Text
- View/download PDF
78. Parathion Alters Incubation Behavior of Laughing Gulls
- Author
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Mitchell, C. A., Hill, E. F., and White, D. H.
- Subjects
LAUGHING gull ,PESTICIDES - Published
- 1983
79. Incubation behavior and body mass of female greater snow geese
- Author
-
Gauthier, Gilles, Reed, Austin, and Hughes, R. John
- Published
- 1995
80. Incubation Behavior of the Dead Sea Sparrow
- Author
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Ar, A., Mendelssohn, H., and Yom-Tov, Y.
- Published
- 1978
81. Males Feeding Females during Incubation. I. Required by Microclimate or Constrained by Nest Predation?
- Author
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Martin TE and Ghalambor CK
- Abstract
Nest attentiveness (percentage of time spent on the nest) during incubation represents a parent-offspring conflict; incubating birds must balance a trade-off between caring for embryos by staying on the nest versus caring for themselves by getting off the nest to forage. For species in which females are the sole incubator, males can potentially affect this trade-off and increase nest attentiveness by feeding incubating females on the nest (incubation feeding). Increased nest attentiveness may be required when local microclimate conditions are harsh and thereby require greater incubation feeding (microclimate hypothesis). Alternatively, incubation feeding may be constrained by risk of attracting nest predators (nest predation hypothesis), which in turn may constrain female nest attentiveness because of energy limitation. We show that incubation feeding rates are much greater among cavity-nesting than among coexisting open-nesting birds. Under the microclimate hypothesis, the greater incubation feeding rates of cavity-nesting birds generate the prediction that microclimate should be harsher than for open-nesting birds. Our results reject this hypothesis because we found the opposite pattern; cavity-nesting birds experienced more moderate (less variable) microclimates that were less often below temperatures (i.e., 16°C) that can negatively impact eggs compared with open-nesting species. In contrast, incubation feeding rates were highly negatively correlated with nest predation both within and between the two nest types, supporting the nest predation hypothesis. Incubation feeding in turn was positively correlated with nest attentiveness. Thus, nest predation may indirectly affect female incubation behavior by directly affecting incubation feeding by the male.
- Published
- 1999
- Full Text
- View/download PDF
82. Factors Affecting Incubation Patterns And Sex Roles of Black Oystercatchers in Alaska
- Published
- 2012
- Full Text
- View/download PDF
83. Unusual Incubation Behavior and Embryonic Tolerance of Hypothermia by the Blood Pheasant ( Ithaginis cruentus )
- Author
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Jia, Chen-Xi, Sun, Yue-Hua, and Swenson, Jon E.
- Published
- 2010
- Full Text
- View/download PDF
84. Effects of Nest Habitat, Food, and Parental Behavior on Shorebird Nest Success
- Author
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Gilchrist, H. Grant
- Published
- 2007
85. A Pressure-Sensitive Wireless Device for Continuously Monitoring Avian Nest Attendance
- Author
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Bottitta, Grace E., Gilchrist, H. Grant, Kift, A., and Meredith, M. G.
- Published
- 2002
86. Covariation of Clutch Size, Laying Date, and Incubation Tendency in the American Kestrel
- Author
-
Sockman, Keith W. and Schwabl, Hubert
- Published
- 2001
87. Patterns of Nest Attendance in Female Wood Ducks
- Author
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Manlove, Chad A. and Hepp, Gary R.
- Published
- 2000
- Full Text
- View/download PDF
88. Evolution of Passerine Incubation Behavior: Influence of Food, Temperature, and Nest Predation
- Author
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Conway, Courtney J. and Martin, Thomas E.
- Published
- 2000
89. Incubation Behavior of Spectacled Eiders on the Yukon-Kuskokwim Delta, Alaska
- Author
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Flint, Paul L. and Grand, J. Barry
- Published
- 1999
- Full Text
- View/download PDF
90. Day-to-Day Variation in Nest Attentiveness of White-Rumped Sandpipers
- Author
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Cartar, Ralph V. and Montgomerie, Robert D.
- Published
- 1987
- Full Text
- View/download PDF
91. Incubation Behavior and Body Mass of Female Greater Snow Geese
- Author
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Reed, Austin, Hughes, R. John, and Gauthier, Gilles
- Published
- 1995
- Full Text
- View/download PDF
92. Hatching failure is greater in altricial bird species with cavity nests and large clutches
- Author
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Di Giovanni, Alexander J., Miller, Michael J., Jones, Todd M., Benson, Thomas J., and Ward, Michael P.
- Published
- 2022
- Full Text
- View/download PDF
93. The Challenge of Coping in an Extremely Hot Environment: A Case Study of the Incubation of Lesser Crested Terns (Thalasseus bengalensis)
- Author
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AlRashidi, Monif
- Published
- 2016
- Full Text
- View/download PDF
94. Factors Affecting Female Incubation Behavior in the Bull-Headed Shrike
- Author
-
Endo, Sachiko and Ueda, Keisuke
- Published
- 2016
- Full Text
- View/download PDF
95. EFFECTS OF NEST HABITAT, FOOD, AND PARENTAL BEHAVIOR ON SHOREBIRD NEST SUCCESS
- Author
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ALLEN SMITH, PAUL, GRANT GILCHRIST, H, and SMITH, JAMES N.M
- Published
- 2007
- Full Text
- View/download PDF
96. The Role of Prolactin in Reproductive Failure Associated with Heat Stress in the Domestic Turkey1
- Author
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Rozenboim, I., Mobarky, N., Heiblum, R., Chaiseha, Y., Kang, S. W., Biran, I., Rosenstrauch, A., Sklan, D., and El Halawani, M. E.
- Published
- 2004
- Full Text
- View/download PDF
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