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4. Biological Earth observation with animal sensors

Author

Åkesson, Susanne, Anisimov, Yury, Antonov, Aleksey, Arnold, Walter, Bairlein, Franz, Baltà, Oriol, Baum, Diane, Beck, Mario, Belonovich, Olga, Belyaev, Mikhail, Berger, Matthias, Berthold, Peter, Bittner, Steffen, Blake, Stephen, Block, Barbara, Bloche, Daniel, Boehning-Gaese, Katrin, Bohrer, Gil, Bojarinova, Julia, Bommas, Gerhard, Bourski, Oleg, Bragin, Albert, Bragin, Alexandr, Bristol, Rachel, Brlík, Vojtěch, Bulyuk, Victor, Cagnacci, Francesca, Carlson, Ben, Chapple, Taylor K., Chefira, Kalkidan F., Cheng, Yachang, Chernetsov, Nikita, Cierlik, Grzegorz, Christiansen, Simon S., Clarabuch, Oriol, Cochran, William, Cornelius, Jamie Margaret, Couzin, Iain, Crofoot, Margret C., Cruz, Sebastian, Davydov, Alexander, Davidson, Sarah, Dech, Stefan, Dechmann, Dina, Demidova, Ekaterina, Dettmann, Jan, Dittmar, Sven, Dorofeev, Dmitry, Drenckhahn, Detlev, Dubyanskiy, Vladimir, Egorov, Nikolay, Ehnbom, Sophie, Ellis-Soto, Diego, Ewald, Ralf, Feare, Chris, Fefelov, Igor, Fehérvári, Péter, Fiedler, Wolfgang, Flack, Andrea, Froböse, Magnus, Fufachev, Ivan, Futoran, Pavel, Gabyshev, Vyachaslav, Gagliardo, Anna, Garthe, Stefan, Gashkov, Sergey, Gibson, Luke, Goymann, Wolfgang, Gruppe, Gerd, Guglielmo, Chris, Hartl, Phil, Hedenström, Anders, Hegemann, Arne, Heine, Georg, Ruiz, Mäggi Hieber, Hofer, Heribert, Huber, Felix, Hurme, Edward, Iannarilli, Fabiola, Illa, Marc, Isaev, Arkadiy, Jakobsen, Bent, Jenni, Lukas, Jenni-Eiermann, Susi, Jesmer, Brett, Jiguet, Frédéric, Karimova, Tatiana, Kasdin, N. Jeremy, Kazansky, Fedor, Kirillin, Ruslan, Klinner, Thomas, Knopp, Andreas, Kölzsch, Andrea, Kondratyev, Alexander, Krondorf, Marco, Ktitorov, Pavel, Kulikova, Olga, Kumar, R. Suresh, Künzer, Claudia, Larionov, Anatoliy, Larose, Christine, Liechti, Felix, Linek, Nils, Lohr, Ashley, Lushchekina, Anna, Mansfield, Kate, Matantseva, Maria, Markovets, Mikhail, Marra, Peter, Masello, Juan F., Melzheimer, Jörg, Menz, Myles H.M., Menzie, Stephen, Meshcheryagina, Swetlana, Miquelle, Dale, Morozov, Vladimir, Mukhin, Andrey, Müller, Inge, Mueller, Thomas, Navedo, Juan G., Nathan, Ran, Nelson, Luke, Németh, Zoltán, Newman, Scott, Norris, Ryan, Nsengimana, Olivier, Okhlopkov, Innokentiy, Oleś, Wioleta, Oliver, Ruth, O’Mara, Teague, Palatitz, Peter, Partecke, Jesko, Pavlick, Ryan, Pedenko, Anastasia, Perry, Alys, Pham, Julie, Piechowski, Daniel, Pierce, Allison, Piersma, Theunis, Pitz, Wolfgang, Plettemeier, Dirk, Pokrovskaya, Irina, Pokrovskaya, Liya, Pokrovsky, Ivan, Pot, Morrison, Procházka, Petr, Quillfeldt, Petra, Rakhimberdiev, Eldar, Ramenofsky, Marilyn, Ranipeta, Ajay, Rapczyński, Jan, Remisiewicz, Magdalena, Rozhnov, Viatcheslav, Rienks, Froukje, Rozhnov, Vyacheslav, Rutz, Christian, Sakhvon, Vital, Sapir, Nir, Safi, Kamran, Schäuffelhut, Friedrich, Schimel, David, Schmidt, Andreas, Shamoun-Baranes, Judy, Sharikov, Alexander, Shearer, Laura, Shemyakin, Evgeny, Sherub, Sherub, Shipley, Ryan, Sica, Yanina, Smith, Thomas B., Simonov, Sergey, Snell, Katherine, Sokolov, Aleksandr, Sokolov, Vasiliy, Solomina, Olga, Soloviev, Mikhail, Spina, Fernando, Spoelstra, Kamiel, Storhas, Martin, Sviridova, Tatiana, Swenson, George, Jr, Taylor, Phil, Thorup, Kasper, Tsvey, Arseny, Tucker, Marlee, Tuppen, Sophie, Turner, Woody, Twizeyimana, Innocent, van der Jeugd, Henk, van Schalkwyk, Louis, van Toor, Mariëlle, Viljoen, Pauli, Visser, Marcel E., Volkmer, Tamara, Volkov, Andrei, Volkov, Sergey, Volkov, Oleg, von Rönn, Jan A.C., Vorneweg, Bernd, Wachter, Bettina, Waldenström, Jonas, Weber, Natalie, Wegmann, Martin, Wehr, Aloysius, Weinzierl, Rolf, Weppler, Johannes, Wilcove, David, Wild, Timm, Williams, Hannah J., Wilshire, John, Wingfield, John, Wunder, Michael, Yachmennikova, Anna, Yanco, Scott, Yohannes, Elisabeth, Zeller, Amelie, Ziegler, Christian, Zięcik, Anna, Zook, Cheryl, Jetz, Walter, Tertitski, Grigori, Kays, Roland, Mueller, Uschi, and Wikelski, Martin

Published
2022
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5. Migrating shorebird killed by raptor at 3000 m above ground as revealed by high‐resolution tracking.

Author

Boom, Michiel P., Yu, Hui, Bom, Roeland A., Hegemann, Arne, Lindström, Åke, Nolet, Bart A., and Lameris, Thomas K.

Subjects
ANIMAL migration, MIGRATORY animals, ANIMAL science, BIRD migration, PEREGRINE falcon, SHORE birds, MIGRATORY birds
Abstract

Recent tracking technology has shown that some birds migrate at extreme altitudes, potentially to avoid predators. Predation risk during migration is a significant factor contributing to high mortality rates among birds. A study tracking Grey Plovers revealed that one bird was killed by a Peregrine Falcon at 3000m above ground, challenging the idea that flying at extreme altitudes can always protect against predators. The research was funded by the Dutch Research Council and conducted by a team of scientists. [Extracted from the article]

Published
2024
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7. Constitutive immune function is not associated with fuel stores in spring migrating passerine birds

Author

Ronanki, Shivani, Hegemann, Arne, Eikenaar, Cas, Ronanki, Shivani, Hegemann, Arne, and Eikenaar, Cas

Abstract

Migratory birds may either upregulate their immune system during migration as they might encounter novel pathogens or downregulate their immune system as a consequence of trade-offs with the resource costs of migration. Support for the latter comes not least from a study that reports a positive correlation in autumn migrating birds between fuel stores and parameters of innate and acquired immune function, that is, energy-exhausted migrants appear to have lowered immune function. However, to our knowledge, no study has tested whether this pattern exists in spring migrating birds, which may face other trade-offs than autumn migrants. Here, we investigate if in spring there is a relationship between fuel stores and microbial-killing ability, a measure of innate immune function, and total immunoglobulin (IgY), a measure of acquired immune function, in four migrating bird species: chaffinches (Fringilla coelebs), dunnocks (Prunella modularis), song thrushes (Turdus philomelos) and northern wheatears (Oenanthe oenanthe). Our findings indicate no significant correlation between fuel stores and either microbial killing ability or IgY levels when considering all species collectively. When analysing species separately, we found a significant negative correlation between fuel stores and microbial-killing ability in chaffinches and a positive correlation between fuel stores and IgY levels in wheatears. In song thrushes, but not in any of the other species, there was a significant negative correlation between relative arrival date and microbial-killing ability and between arrival date and IgY levels. Sex did not affect immune function in any of the species. Our study suggests that the relationship between immune function and fuel stores may be different during spring migration compared to autumn migration. Differences in the speed of migration or pathogen pressure may result in different outcomes of the resource trade-off between investment in immune function and migration among

Published
2024

18. Rara arter 2023.

Author

Ullman, Mattias, Folkesson, David, Petersson, Alf, Cronert, Hans, Olofsson, Patrik, Hegemann, Arne, Löfgren, Oskar, Sundlöf, Lars, von Holten, Helen, Johannesson, Mats, Persson, Olof, and Öhrström, Peter

Published
2023

28. Biological Earth observation with animal sensors

Author

Jetz, Walter, Tertitski, Grigori, Kays, Roland, Mueller, Uschi, Wikelski, Martin, Akesson, Susanne, Anisimov, Yury, Antonov, Aleksey, Arnold, Walter, Bairlein, Franz, Balta, Oriol, Baum, Diane, Beck, Mario, Belonovich, Olga, Belyaev, Mikhail, Berger, Matthias, Berthold, Peter, Bittner, Steffen, Blake, Stephen, Block, Barbara, Bloche, Daniel, Boehning-Gaese, Katrin, Bohrer, Gil, Bojarinova, Julia, Bommas, Gerhard, Bourski, Oleg, Bragin, Albert, Bragin, Alexandr, Bristol, Rachel, Brlik, Vojtech, Bulyuk, Victor, Cagnacci, Francesca, Carlson, Ben, Chapple, Taylor K., Chefira, Kalkidan F., Cheng, Yachang, Chernetsov, Nikita, Cierlik, Grzegorz, Christiansen, Simon S., Clarabuch, Oriol, Cochran, William, Cornelius, Jamie Margaret, Couzin, Iain, Crofoot, Margret C., Cruz, Sebastian, Davydov, Alexander, Davidson, Sarah, Dech, Stefan, Dechmann, Dina, Demidova, Ekaterina, Dettmann, Jan, Dittmar, Sven, Dorofeev, Dmitry, Drenckhahn, Detlev, Dubyanskiy, Vladimir, Egorov, Nikolay, Ehnbom, Sophie, Ellis-Soto, Diego, Ewald, Ralf, Feare, Chris, Fefelov, Igor, Fehervari, Peter, Fiedler, Wolfgang, Flack, Andrea, Froboese, Magnus, Fufachev, Ivan, Futoran, Pavel, Gabyshev, Vyachaslav, Gagliardo, Anna, Garthe, Stefan, Gashkov, Sergey, Gibson, Luke, Goymann, Wolfgang, Gruppe, Gerd, Guglielmo, Chris, Hartl, Phil, Hedenstrom, Anders, Hegemann, Arne, Heine, Georg, Ruiz, Maggi Hieber, Hofer, Heribert, Huber, Felix, Hurme, Edward, Iannarilli, Fabiola, Illa, Marc, Isaev, Arkadiy, Jakobsen, Bent, Jenni, Lukas, Jenni-Eiermann, Susi, Jesmer, Brett R., Jiguet, Frederic, Karimova, Tatiana, Kasdin, N. Jeremy, Kazansky, Fedor, Kirillin, Ruslan, Klinner, Thomas, Knopp, Andreas, Koelzsch, Andrea, Kondratyev, Alexander, Krondorf, Marco, Ktitorov, Pavel, Kulikova, Olga, Kumar, R. Suresh, Kuenzer, Claudia, Larionov, Anatoliy, Larose, Christine, Liechti, Felix, Linek, Nils, Lohr, Ashley, Lushchekina, Anna, Mansfield, Kate, Matantseva, Maria, Markovets, Mikhail, Marra, Peter, Masello, Juan F., Melzheimer, Joerg, Menz, Myles HM M., Menzie, Stephen, Meshcheryagina, Swetlana, Miquelle, Dale, Morozov, Vladimir, Mukhin, Andrey, Mueller, Inge, Mueller, Thomas, Navedo, Juan G., Nathan, Ran, Nelson, Luke, Nemeth, Zoltan, Newman, Scott, Norris, Ryan, Nsengimana, Olivier, Okhlopkov, Innokentiy, Oles, Wioleta, Oliver, Ruth, O'Mara, Teague, Palatitz, Peter, Partecke, Jesko, Pavlick, Ryan, Pedenko, Anastasia, Perry, Alys, Pham, Julie, Piechowski, Daniel, Pierce, Allison, Piersma, Theunis, Pitz, Wolfgang, Plettemeier, Dirk, Pokrovskaya, Irina, Pokrovskaya, Liya, Pokrovsky, Ivan, Pot, Morrison, Prochazka, Petr, Quillfeldt, Petra, Rakhimberdiev, Eldar, Ramenofsky, Marilyn, Ranipeta, Ajay, Rapczynski, Jan, Remisiewicz, Magdalena, Rozhnov, Viatcheslav, Rienks, Froukje, Rozhnov, Vyacheslav, Rutz, Christian, Sakhvon, Vital, Sapir, Nir, Safi, Kamran, Schaeuffelhut, Friedrich, Schimel, David, Schmidt, Andreas, Shamoun-Baranes, Judy, Sharikov, Alexander, Shearer, Laura, Shemyakin, Evgeny, Sherub, Sherub, Shipley, Ryan, Sica, Yanina, Smith, Thomas B., Simonov, Sergey, Snell, Katherine, Sokolov, Aleksandr, Sokolov, Vasiliy, Solomina, Olga, Spina, Fernando, Spoelstra, Kamiel, Storhas, Martin, Sviridova, Tatiana, Swenson, George, Taylor, Phil, Thorup, Kasper, Tsvey, Arseny, Tucker, Marlee, Tuppen, Sophie, Turner, Woody, Twizeyimana, Innocent, van der Jeugd, Henk, van Schalkwyk, Louis, van Toor, Marielle, Viljoen, Pauli, Visser, Marcel E., Volkmer, Tamara, Volkov, Andrey, Volkov, Sergey, Volkov, Oleg, von Ronn, Jan AC C., Vorneweg, Bernd, Wachter, Bettina, Waldenstrom, Jonas, Weber, Natalie, Wegmann, Martin, Wehr, Aloysius, Weinzierl, Rolf, Weppler, Johannes, Wilcove, David, Wild, Timm, Williams, Hannah J., Wilshire, John H., Wingfield, John, Wunder, Michael, Yachmennikova, Anna, Yanco, Scott, Yohannes, Elisabeth, Zeller, Amelie, Ziegler, Christian, Ziecik, Anna, Zook, Cheryl, Jetz, Walter, Tertitski, Grigori, Kays, Roland, Mueller, Uschi, Wikelski, Martin, Akesson, Susanne, Anisimov, Yury, Antonov, Aleksey, Arnold, Walter, Bairlein, Franz, Balta, Oriol, Baum, Diane, Beck, Mario, Belonovich, Olga, Belyaev, Mikhail, Berger, Matthias, Berthold, Peter, Bittner, Steffen, Blake, Stephen, Block, Barbara, Bloche, Daniel, Boehning-Gaese, Katrin, Bohrer, Gil, Bojarinova, Julia, Bommas, Gerhard, Bourski, Oleg, Bragin, Albert, Bragin, Alexandr, Bristol, Rachel, Brlik, Vojtech, Bulyuk, Victor, Cagnacci, Francesca, Carlson, Ben, Chapple, Taylor K., Chefira, Kalkidan F., Cheng, Yachang, Chernetsov, Nikita, Cierlik, Grzegorz, Christiansen, Simon S., Clarabuch, Oriol, Cochran, William, Cornelius, Jamie Margaret, Couzin, Iain, Crofoot, Margret C., Cruz, Sebastian, Davydov, Alexander, Davidson, Sarah, Dech, Stefan, Dechmann, Dina, Demidova, Ekaterina, Dettmann, Jan, Dittmar, Sven, Dorofeev, Dmitry, Drenckhahn, Detlev, Dubyanskiy, Vladimir, Egorov, Nikolay, Ehnbom, Sophie, Ellis-Soto, Diego, Ewald, Ralf, Feare, Chris, Fefelov, Igor, Fehervari, Peter, Fiedler, Wolfgang, Flack, Andrea, Froboese, Magnus, Fufachev, Ivan, Futoran, Pavel, Gabyshev, Vyachaslav, Gagliardo, Anna, Garthe, Stefan, Gashkov, Sergey, Gibson, Luke, Goymann, Wolfgang, Gruppe, Gerd, Guglielmo, Chris, Hartl, Phil, Hedenstrom, Anders, Hegemann, Arne, Heine, Georg, Ruiz, Maggi Hieber, Hofer, Heribert, Huber, Felix, Hurme, Edward, Iannarilli, Fabiola, Illa, Marc, Isaev, Arkadiy, Jakobsen, Bent, Jenni, Lukas, Jenni-Eiermann, Susi, Jesmer, Brett R., Jiguet, Frederic, Karimova, Tatiana, Kasdin, N. Jeremy, Kazansky, Fedor, Kirillin, Ruslan, Klinner, Thomas, Knopp, Andreas, Koelzsch, Andrea, Kondratyev, Alexander, Krondorf, Marco, Ktitorov, Pavel, Kulikova, Olga, Kumar, R. Suresh, Kuenzer, Claudia, Larionov, Anatoliy, Larose, Christine, Liechti, Felix, Linek, Nils, Lohr, Ashley, Lushchekina, Anna, Mansfield, Kate, Matantseva, Maria, Markovets, Mikhail, Marra, Peter, Masello, Juan F., Melzheimer, Joerg, Menz, Myles HM M., Menzie, Stephen, Meshcheryagina, Swetlana, Miquelle, Dale, Morozov, Vladimir, Mukhin, Andrey, Mueller, Inge, Mueller, Thomas, Navedo, Juan G., Nathan, Ran, Nelson, Luke, Nemeth, Zoltan, Newman, Scott, Norris, Ryan, Nsengimana, Olivier, Okhlopkov, Innokentiy, Oles, Wioleta, Oliver, Ruth, O'Mara, Teague, Palatitz, Peter, Partecke, Jesko, Pavlick, Ryan, Pedenko, Anastasia, Perry, Alys, Pham, Julie, Piechowski, Daniel, Pierce, Allison, Piersma, Theunis, Pitz, Wolfgang, Plettemeier, Dirk, Pokrovskaya, Irina, Pokrovskaya, Liya, Pokrovsky, Ivan, Pot, Morrison, Prochazka, Petr, Quillfeldt, Petra, Rakhimberdiev, Eldar, Ramenofsky, Marilyn, Ranipeta, Ajay, Rapczynski, Jan, Remisiewicz, Magdalena, Rozhnov, Viatcheslav, Rienks, Froukje, Rozhnov, Vyacheslav, Rutz, Christian, Sakhvon, Vital, Sapir, Nir, Safi, Kamran, Schaeuffelhut, Friedrich, Schimel, David, Schmidt, Andreas, Shamoun-Baranes, Judy, Sharikov, Alexander, Shearer, Laura, Shemyakin, Evgeny, Sherub, Sherub, Shipley, Ryan, Sica, Yanina, Smith, Thomas B., Simonov, Sergey, Snell, Katherine, Sokolov, Aleksandr, Sokolov, Vasiliy, Solomina, Olga, Spina, Fernando, Spoelstra, Kamiel, Storhas, Martin, Sviridova, Tatiana, Swenson, George, Taylor, Phil, Thorup, Kasper, Tsvey, Arseny, Tucker, Marlee, Tuppen, Sophie, Turner, Woody, Twizeyimana, Innocent, van der Jeugd, Henk, van Schalkwyk, Louis, van Toor, Marielle, Viljoen, Pauli, Visser, Marcel E., Volkmer, Tamara, Volkov, Andrey, Volkov, Sergey, Volkov, Oleg, von Ronn, Jan AC C., Vorneweg, Bernd, Wachter, Bettina, Waldenstrom, Jonas, Weber, Natalie, Wegmann, Martin, Wehr, Aloysius, Weinzierl, Rolf, Weppler, Johannes, Wilcove, David, Wild, Timm, Williams, Hannah J., Wilshire, John H., Wingfield, John, Wunder, Michael, Yachmennikova, Anna, Yanco, Scott, Yohannes, Elisabeth, Zeller, Amelie, Ziegler, Christian, Ziecik, Anna, and Zook, Cheryl

Abstract

Space-based tracking technology using low-cost miniature tags is now delivering data on fine-scale animal movement at near-global scale. Linked with remotely sensed environmental data, this offers a biological lens on habitat integrity and connectivity for conservation and human health; a global network of animal sentinels of environmental change.

Published
2022

31. Biological Earth observation with animal sensors

Author

Jetz, Walter, primary, Tertitski, Grigori, additional, Kays, Roland, additional, Mueller, Uschi, additional, Wikelski, Martin, additional, Åkesson, Susanne, additional, Anisimov, Yury, additional, Antonov, Aleksey, additional, Arnold, Walter, additional, Bairlein, Franz, additional, Baltà, Oriol, additional, Baum, Diane, additional, Beck, Mario, additional, Belonovich, Olga, additional, Belyaev, Mikhail, additional, Berger, Matthias, additional, Berthold, Peter, additional, Bittner, Steffen, additional, Blake, Stephen, additional, Block, Barbara, additional, Bloche, Daniel, additional, Boehning-Gaese, Katrin, additional, Bohrer, Gil, additional, Bojarinova, Julia, additional, Bommas, Gerhard, additional, Bourski, Oleg, additional, Bragin, Albert, additional, Bragin, Alexandr, additional, Bristol, Rachel, additional, Brlík, Vojtěch, additional, Bulyuk, Victor, additional, Cagnacci, Francesca, additional, Carlson, Ben, additional, Chapple, Taylor K., additional, Chefira, Kalkidan F., additional, Cheng, Yachang, additional, Chernetsov, Nikita, additional, Cierlik, Grzegorz, additional, Christiansen, Simon S., additional, Clarabuch, Oriol, additional, Cochran, William, additional, Cornelius, Jamie Margaret, additional, Couzin, Iain, additional, Crofoot, Margret C., additional, Cruz, Sebastian, additional, Davydov, Alexander, additional, Davidson, Sarah, additional, Dech, Stefan, additional, Dechmann, Dina, additional, Demidova, Ekaterina, additional, Dettmann, Jan, additional, Dittmar, Sven, additional, Dorofeev, Dmitry, additional, Drenckhahn, Detlev, additional, Dubyanskiy, Vladimir, additional, Egorov, Nikolay, additional, Ehnbom, Sophie, additional, Ellis-Soto, Diego, additional, Ewald, Ralf, additional, Feare, Chris, additional, Fefelov, Igor, additional, Fehérvári, Péter, additional, Fiedler, Wolfgang, additional, Flack, Andrea, additional, Froböse, Magnus, additional, Fufachev, Ivan, additional, Futoran, Pavel, additional, Gabyshev, Vyachaslav, additional, Gagliardo, Anna, additional, Garthe, Stefan, additional, Gashkov, Sergey, additional, Gibson, Luke, additional, Goymann, Wolfgang, additional, Gruppe, Gerd, additional, Guglielmo, Chris, additional, Hartl, Phil, additional, Hedenström, Anders, additional, Hegemann, Arne, additional, Heine, Georg, additional, Ruiz, Mäggi Hieber, additional, Hofer, Heribert, additional, Huber, Felix, additional, Hurme, Edward, additional, Iannarilli, Fabiola, additional, Illa, Marc, additional, Isaev, Arkadiy, additional, Jakobsen, Bent, additional, Jenni, Lukas, additional, Jenni-Eiermann, Susi, additional, Jesmer, Brett, additional, Jiguet, Frédéric, additional, Karimova, Tatiana, additional, Kasdin, N. Jeremy, additional, Kazansky, Fedor, additional, Kirillin, Ruslan, additional, Klinner, Thomas, additional, Knopp, Andreas, additional, Kölzsch, Andrea, additional, Kondratyev, Alexander, additional, Krondorf, Marco, additional, Ktitorov, Pavel, additional, Kulikova, Olga, additional, Kumar, R. Suresh, additional, Künzer, Claudia, additional, Larionov, Anatoliy, additional, Larose, Christine, additional, Liechti, Felix, additional, Linek, Nils, additional, Lohr, Ashley, additional, Lushchekina, Anna, additional, Mansfield, Kate, additional, Matantseva, Maria, additional, Markovets, Mikhail, additional, Marra, Peter, additional, Masello, Juan F., additional, Melzheimer, Jörg, additional, Menz, Myles H.M., additional, Menzie, Stephen, additional, Meshcheryagina, Swetlana, additional, Miquelle, Dale, additional, Morozov, Vladimir, additional, Mukhin, Andrey, additional, Müller, Inge, additional, Mueller, Thomas, additional, Navedo, Juan G., additional, Nathan, Ran, additional, Nelson, Luke, additional, Németh, Zoltán, additional, Newman, Scott, additional, Norris, Ryan, additional, Nsengimana, Olivier, additional, Okhlopkov, Innokentiy, additional, Oleś, Wioleta, additional, Oliver, Ruth, additional, O’Mara, Teague, additional, Palatitz, Peter, additional, Partecke, Jesko, additional, Pavlick, Ryan, additional, Pedenko, Anastasia, additional, Perry, Alys, additional, Pham, Julie, additional, Piechowski, Daniel, additional, Pierce, Allison, additional, Piersma, Theunis, additional, Pitz, Wolfgang, additional, Plettemeier, Dirk, additional, Pokrovskaya, Irina, additional, Pokrovskaya, Liya, additional, Pokrovsky, Ivan, additional, Pot, Morrison, additional, Procházka, Petr, additional, Quillfeldt, Petra, additional, Rakhimberdiev, Eldar, additional, Ramenofsky, Marilyn, additional, Ranipeta, Ajay, additional, Rapczyński, Jan, additional, Remisiewicz, Magdalena, additional, Rozhnov, Viatcheslav, additional, Rienks, Froukje, additional, Rozhnov, Vyacheslav, additional, Rutz, Christian, additional, Sakhvon, Vital, additional, Sapir, Nir, additional, Safi, Kamran, additional, Schäuffelhut, Friedrich, additional, Schimel, David, additional, Schmidt, Andreas, additional, Shamoun-Baranes, Judy, additional, Sharikov, Alexander, additional, Shearer, Laura, additional, Shemyakin, Evgeny, additional, Sherub, Sherub, additional, Shipley, Ryan, additional, Sica, Yanina, additional, Smith, Thomas B., additional, Simonov, Sergey, additional, Snell, Katherine, additional, Sokolov, Aleksandr, additional, Sokolov, Vasiliy, additional, Solomina, Olga, additional, Soloviev, Mikhail, additional, Spina, Fernando, additional, Spoelstra, Kamiel, additional, Storhas, Martin, additional, Sviridova, Tatiana, additional, Swenson, George, additional, Taylor, Phil, additional, Thorup, Kasper, additional, Tsvey, Arseny, additional, Tucker, Marlee, additional, Tuppen, Sophie, additional, Turner, Woody, additional, Twizeyimana, Innocent, additional, van der Jeugd, Henk, additional, van Schalkwyk, Louis, additional, van Toor, Mariëlle, additional, Viljoen, Pauli, additional, Visser, Marcel E., additional, Volkmer, Tamara, additional, Volkov, Andrei, additional, Volkov, Sergey, additional, Volkov, Oleg, additional, von Rönn, Jan A.C., additional, Vorneweg, Bernd, additional, Wachter, Bettina, additional, Waldenström, Jonas, additional, Weber, Natalie, additional, Wegmann, Martin, additional, Wehr, Aloysius, additional, Weinzierl, Rolf, additional, Weppler, Johannes, additional, Wilcove, David, additional, Wild, Timm, additional, Williams, Hannah J., additional, Wilshire, John, additional, Wingfield, John, additional, Wunder, Michael, additional, Yachmennikova, Anna, additional, Yanco, Scott, additional, Yohannes, Elisabeth, additional, Zeller, Amelie, additional, Ziegler, Christian, additional, Zięcik, Anna, additional, and Zook, Cheryl, additional

Published
2022
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34. Innate immune function and antioxidant capacity of nestlings of an African raptor covary with the level of urbanisation around breeding territories.

Author

Nwaogu, Chima Josiah, Amar, Arjun, Nebel, Carina, Isaksson, Caroline, Hegemann, Arne, and Sumasgutner, Petra

Subjects
OXIDANT status, URBANIZATION, BABY birds, CITIES & towns, BIRDS of prey, BACTERIAL diseases, PATH analysis (Statistics)
Abstract

Urban areas provide breeding habitats for many species. However, animals raised in urban environments face challenges such as altered food availability and quality, pollution and pathogen assemblages. These challenges can affect physiological processes such as immune function and antioxidant defences which are important for fitness.Here, we explore how levels of urbanisation influence innate immune function, immune response to a mimicked bacterial infection and antioxidant capacity of nestling Black Sparrowhawks Accipiter melanoleucus in South Africa. We also explore the effect of timing of breeding and rainfall on physiology since both can influence the environmental condition under which nestlings are raised. Finally, because urbanisation can influence immune function indirectly, we use path analyses to explore direct and indirect associations between urbanisation, immune function and oxidative stress.We obtained measures of innate immunity (haptoglobin, lysis, agglutination, bactericidal capacity), indices of antioxidant capacity (total non‐enzymatic antioxidant capacity (tAOX) and total glutathione from nestlings from 2015 to 2019. In addition, in 2018 and 2019, we mimicked a bacterial infection by injecting nestlings with lipopolysaccharide and quantified their immune response.Increased urban cover was associated with an increase in lysis and a decrease in tAOX, but not with any of the other physiological parameters. Furthermore, except for agglutination, no physiological parameters were associated with the timing of breeding. Lysis and bactericidal capacity, however, varied consistently with the annual rainfall pattern. Immune response to a mimicked a bacterial infection decreased with urban cover but not with the timing of breeding nor rainfall. Our path analyses suggested indirect associations between urban cover and some immune indices via tAOX but not via the timing of breeding.Our results show that early‐life development in an urban environment is associated with variation in immune and antioxidant functions. The direct association between urbanisation and antioxidant capacity and their impact on immune function is likely an important factor mediating the impact of urbanisation on urban‐dwelling animals. Future studies should explore how these results are linked to fitness and whether the responses are adaptive for urban‐dwelling species. [ABSTRACT FROM AUTHOR]

Published
2023
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35. Telomeres in ecology and evolution: A review and classification of hypotheses.

Author

Tobler, Michael, Gómez‐Blanco, David, Hegemann, Arne, Lapa, Mariana, Neto, Júlio M., Tarka, Maja, Xiong, Ye, and Hasselquist, Dennis

Subjects
TELOMERES, LIFE history theory, HYPOTHESIS
Abstract

Research on telomeres in the fields of ecology and evolution has been rapidly expanding over the last two decades. This has resulted in the formulation of a multitude of, often name‐given, hypotheses related to the associations between telomeres and life‐history traits or fitness‐facilitating processes (and the mechanisms underlying them). However, the differences (or similarities) between the various hypotheses, which can originate from different research fields, are often not obvious. Our aim here is therefore to give an overview of the hypotheses that are of interest in ecology and evolution and to provide two frameworks that help discriminate among them. We group the hypotheses (i) based on their association with different research questions, and (ii) using a hierarchical approach that builds on the assumptions they make, such as about causality of telomere length/shortening and/or the proposed functional consequences of telomere shortening on organism performance. Both our frameworks show that there exist parallel lines of thoughts in different research fields. Moreover, they also clearly illustrate that there are in many cases competing hypotheses within clusters, and that some of these even have contradictory assumptions and/or predictions. We also touch upon two topics in telomere research that would benefit from further conceptualization. This review should help researchers, both those familiar with and those new to the subject, to identify future avenues of research. [ABSTRACT FROM AUTHOR]

Published
2022
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36. Exposure to artificial light at night alters innate immune response in wild great tit nestlings

Author

Ziegler, Ann-Kathrin, Watson, Hannah, Hegemann, Arne, Meitern, Richard, Canoine, Virginie, Nilsson, Jan-Åke, and Isaksson, Caroline

Subjects
0106 biological sciences, Light, Lipopolysaccharide, Physiology, Zoology, Immune function, Aquatic Science, Nocturnal, 010603 evolutionary biology, 01 natural sciences, Nitric oxide, Melatonin, ALAN, 03 medical and health sciences, chemistry.chemical_compound, Immune system, medicine, Animals, Passeriformes, Circadian rhythm, Molecular Biology, Ecology, Evolution, Behavior and Systematics, 030304 developmental biology, Parus, 0303 health sciences, Innate immune system, biology, Urbanization, biology.organism_classification, Immunity, Innate, Circadian Rhythm, chemistry, Light pollution, Insect Science, Animal Science and Zoology, Research Article, medicine.drug
Abstract

The large-scale impact of urbanization on wildlife is rather well documented; however, the mechanisms underlying the effects of urban environments on animal physiology and behaviour are still poorly understood. Here, we focused on one major urban pollutant – artificial light at night (ALAN) – and its effects on the capacity to mount an innate immune response in wild great tit (Parus major) nestlings. Exposure to ALAN alters circadian rhythms of physiological processes, by disrupting the nocturnal production of the hormone melatonin. Nestlings were exposed to a light source emitting 3 lx for seven consecutive nights. Subsequently, nestlings were immune challenged with a lipopolysaccharide injection, and we measured haptoglobin and nitric oxide levels pre- and post-injection. Both haptoglobin and nitric oxide are important markers for innate immune function. We found that ALAN exposure altered the innate immune response, with nestlings exposed to ALAN having lower haptoglobin and higher nitric oxide levels after the immune challenge compared with dark-night nestlings. Unexpectedly, nitric oxide levels were overall lower after the immune challenge than before. These effects were probably mediated by melatonin, as ALAN-treated birds had on average 49% lower melatonin levels than the dark-night birds. ALAN exposure did not have any clear effects on nestling growth. This study provides a potential physiological mechanism underlying the documented differences in immune function between urban and rural birds observed in other studies. Moreover, it gives evidence that ALAN exposure affects nestling physiology, potentially causing long-term effects on physiology and behaviour, which ultimately can affect their fitness., Summary: Exposure to artificial light at night changes aspects of baseline innate immunity and the response towards an immune challenge in wild great tit nestlings, which is probably mediated by reduced levels of melatonin.

Published
2021

37. Rara arter 2022.

Author

Bengtsson, Kenneth, Wallin, Thomas, Ullman, Mattias, Folkesson, David, Petersson, Alf, Gronert, Hans, Olofsson, Patrik, Hegemann, Arne, Persson, Gustaf, Johannesson, Mats, Persson, Olof, Öhrström, Peter, Olsson, Peter, Bergendahl, Richard, Cronert, Hans, Jönsson, Paul-Erik, Karlsson, Leif, Nordström, Kenny, Ståhle, Ulf, and Sundlöf, Lars

Published
2022

39. A Comparative Study of the Innate Humoral Immune Response to Avian Influenza Virus in Wild and Domestic Mallards

Author

van Dijk, Jacintha G B, Verhagen, Josanne H, Hegemann, Arne, Tolf, Conny, Olofsson, Jenny, Järhult, Josef D, Waldenström, Jonas, and Klinische infectiologie en microb. lab.

Subjects
animal structures, Anas platyrhynchos, animal diseases, infectious disease, innate humoral immunity, virus diseases, natural antibody, complement, sentinel, baseline immune function, haptoglobin
Abstract

Domestic mallards (Anas platyrhynchos domesticus) are traditionally used as a model to investigate infection dynamics and immune responses to low pathogenic avian influenza viruses (LPAIVs) in free-living mallards. However, it is unclear whether the immune response of domestic birds reflects the response of their free-living counterparts naturally exposed to these viruses. We investigated the extent to which the innate humoral immune response was similar among (i) wild-type domestic mallards in primary and secondary infection with LPAIV H4N6 in a laboratory setting (laboratory mallards), (ii) wild-type domestic mallards naturally exposed to LPAIVs in a semi-natural setting (sentinel mallards), and (iii) free-living mallards naturally exposed to LPAIVs. We quantified innate humoral immune function by measuring non-specific natural antibodies (agglutination), complement activity (lysis), and the acute phase protein haptoglobin. We demonstrate that complement activity in the first 3 days after LPAIV exposure was higher in primary-exposed laboratory mallards than in sentinel and free-living mallards. LPAIV H4N6 likely activated the complement system and the acute phase response in primary-exposed laboratory mallards, as lysis was higher and haptoglobin lower at day 3 and 7 post-exposure compared to baseline immune function measured prior to exposure. There were no differences observed in natural antibody and haptoglobin concentrations among laboratory, sentinel, and free-living mallards in the first 3 days after LPAIV exposure. Our study demonstrates that, based on the three innate humoral immune parameters measured, domestic mallards seem an appropriate model to investigate innate immunology of their free-living counterparts, albeit the innate immune response of secondary-LPAIV exposed mallards is a better proxy for the innate immune response in pre-exposed free-living mallards than that of immunologically naïve mallards.

Published
2020

40. A Comparative Study of the Innate Humoral Immune Response to Avian Influenza Virus in Wild and Domestic Mallards

Author

van Dijk, Jacintha G. B., Verhagen, Josanne H., Hegemann, Arne, Tolf, Conny, Olofsson, Jenny, Järhult, Josef D., Waldenström, Jonas, van Dijk, Jacintha G. B., Verhagen, Josanne H., Hegemann, Arne, Tolf, Conny, Olofsson, Jenny, Järhult, Josef D., and Waldenström, Jonas

Abstract

Domestic mallards (Anas platyrhynchos domesticus) are traditionally used as a model to investigate infection dynamics and immune responses to low pathogenic avian influenza viruses (LPAIVs) in free-living mallards. However, it is unclear whether the immune response of domestic birds reflects the response of their free-living counterparts naturally exposed to these viruses. We investigated the extent to which the innate humoral immune response was similar among (i) wild-type domestic mallards in primary and secondary infection with LPAIV H4N6 in a laboratory setting (laboratory mallards), (ii) wild-type domestic mallards naturally exposed to LPAIVs in a semi-natural setting (sentinel mallards), and (iii) free-living mallards naturally exposed to LPAIVs. We quantified innate humoral immune function by measuring non-specific natural antibodies (agglutination), complement activity (lysis), and the acute phase protein haptoglobin. We demonstrate that complement activity in the first 3 days after LPAIV exposure was higher in primary-exposed laboratory mallards than in sentinel and free-living mallards. LPAIV H4N6 likely activated the complement system and the acute phase response in primary-exposed laboratory mallards, as lysis was higher and haptoglobin lower at day 3 and 7 post-exposure compared to baseline immune function measured prior to exposure. There were no differences observed in natural antibody and haptoglobin concentrations among laboratory, sentinel, and free-living mallards in the first 3 days after LPAIV exposure. Our study demonstrates that, based on the three innate humoral immune parameters measured, domestic mallards seem an appropriate model to investigate innate immunology of their free-living counterparts, albeit the innate immune response of secondary-LPAIV exposed mallards is a better proxy for the innate immune response in pre-exposed free-living mallards than that of immunologically naive mallards.

Published
2020
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42. Experimental facilitation of heat loss affects work rate and innate immune function in a breeding passerine bird

Author

Andreasson, Fredrik, Hegemann, Arne, Nord, Andreas, Nilsson, Jan-Åke, Andreasson, Fredrik, Hegemann, Arne, Nord, Andreas, and Nilsson, Jan-Åke

Abstract

The capacity to get rid of excess heat produced during hard work is a possible constraint on parental effort during reproduction [heat dissipation limit (HDL) theory]. We released hard-working blue tits (Cyanistes caeruleus) from this constraint by experimentally removing ventral plumage. We then assessed whether this changed their reproductive effort (feeding rate and nestling size) and levels of self-maintenance (change in body mass and innate immune function). Feather-clipped females reduced the number of feeding visits and increased levels of constitutive innate immunity compared with unclipped females but did not fledge smaller nestlings. Thus, they increased self-maintenance without compromising current reproductive output. In contrast, feather clipping did not affect the number of feeding visits or innate immune function in males, despite increased heat loss rate. Our results show that analyses of physiological parameters, such as constitutive innate immune function, can be important when trying to understand sources of variation in investment in self-maintenance versus reproductive effort and that risk of overheating can influence innate immune function during reproduction.

Published
2020

50. Defence versus defence : Are crucian carp trading off immune function against predator-induced morphology?

Author

Vinterstare, Jerker, Hegemann, Arne, Nilsson, Per Anders, Hulthen, Kaj, Bronmark, Christer, Vinterstare, Jerker, Hegemann, Arne, Nilsson, Per Anders, Hulthen, Kaj, and Bronmark, Christer

Abstract

Numerous species adopt inducible defence strategies; that is, they have phenotypically plastic traits that decrease the risk of capture and consumption by potential predators. The benefits of expressing alternative phenotypes in high- vs. low-risk environments are well documented. However, inducible anti-predator traits are also expected to incur costs, as they are not expressed when predators are absent, yet empirical evidence of such costs remains scarce. Virtually, all animals in nature are simultaneously under strong selection to evade both capture by predators and infection by parasites or pathogens and, hence, display a diverse arsenal of defences to combat these threats, raising the possibility of trade-offs between defences. A classic example of a predator-induced morphological defence is the deep-bodied shape of crucian carp that reduces risk of predation from gape-size-limited predators. The goal of this study was to examine whether predator exposure affects also immune function in crucian carp, and whether the degree of expressed morphological defence is traded off against immune function in individuals. Following exposure to manipulations of perceived risk (predator presence/absence) in a long-term experiment (8 months), key aspects of innate immune function and individual differences in the expression of inducible morphological defence were quantified. Predator-exposed individuals showed lower haptoglobin levels and complement activity, but higher natural antibody titres than fish from predator-free conditions. When experimentally challenged with a mimicked bacterial infection (LPS injection), fish reared in the presence of a natural predator showed a weaker immune response. Moreover, among predator-exposed individuals, the magnitude of morphological defence expression correlated with both baseline immune function and the ability to mount an immune response. However, these relationships were not consistently supportive of a general trade-off among defen

Published
2019
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