Adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions
International audience There is a growing interest in studying consistency and site fidelity of individuals to assess, respectively, how individual behaviour shapes the population response to environmental changes, and to highlight the critical habitats needed by species. In Antarctica, the foraging...
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Online Access: | https://hal.science/hal-03139521 https://doi.org/10.1371/journal.pone.0244298 |
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ftunivnantes:oai:HAL:hal-03139521v1 2023-05-15T13:30:51+02:00 Adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions Michelot, Candice Kato, Akiko Raclot, Thierry Ropert‐coudert, Yan Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) 2021-01-22 https://hal.science/hal-03139521 https://doi.org/10.1371/journal.pone.0244298 en eng HAL CCSD Public Library of Science info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0244298 hal-03139521 https://hal.science/hal-03139521 doi:10.1371/journal.pone.0244298 PUBMEDCENTRAL: PMC7822312 ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-03139521 PLoS ONE, 2021, 16 (1), pp.e0244298. ⟨10.1371/journal.pone.0244298⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2021 ftunivnantes https://doi.org/10.1371/journal.pone.0244298 2023-03-08T03:16:31Z International audience There is a growing interest in studying consistency and site fidelity of individuals to assess, respectively, how individual behaviour shapes the population response to environmental changes, and to highlight the critical habitats needed by species. In Antarctica, the foraging activity of central place foragers like Adélie penguins ( Pygoscelis adeliae ) is constrained by the sea-ice cover during the breeding season. We estimated the population-level repeatability in foraging trip parameters and sea-ice conditions encountered by birds across successive trips over several years, and we examined their foraging site fidelity linked to sea-ice concentrations throughout the chick-rearing season. Penguins’ foraging activity was repeatable despite varying annual sea-ice conditions. Birds’ site fidelity is constrained by both sea-ice conditions around the colony that limit movements and resources availability, and also behavioural repeatability of individuals driven by phenological constraints. Adélie penguins favoured sea-ice concentrations between 20–30%, as these facilitate access to open water while opening multiple patches for exploration in restricted areas in case of prey depletion. When the sea-ice concentration became greater than 30%, foraging site fidelity decreased and showed higher variability, while it increased again after 60%. Between two trips, the foraging site fidelity remained high when sea-ice concentration changed by ± 10% but showed greater variability when sea-ice concentrations differed on a larger range. In summary, Adélie penguins specialize their foraging behaviour during chick-rearing according to sea-ice conditions to enhance their reproductive success. The balance between being consistent under favourable environmental conditions vs. being flexible under more challenging conditions may be key to improving foraging efficiency and reproductive success to face fast environmental changes. Article in Journal/Newspaper Antarc* Antarctica Pygoscelis adeliae Sea ice Université de Nantes: HAL-UNIV-NANTES PLOS ONE 16 1 e0244298 |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Michelot, Candice Kato, Akiko Raclot, Thierry Ropert‐coudert, Yan Adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience There is a growing interest in studying consistency and site fidelity of individuals to assess, respectively, how individual behaviour shapes the population response to environmental changes, and to highlight the critical habitats needed by species. In Antarctica, the foraging activity of central place foragers like Adélie penguins ( Pygoscelis adeliae ) is constrained by the sea-ice cover during the breeding season. We estimated the population-level repeatability in foraging trip parameters and sea-ice conditions encountered by birds across successive trips over several years, and we examined their foraging site fidelity linked to sea-ice concentrations throughout the chick-rearing season. Penguins’ foraging activity was repeatable despite varying annual sea-ice conditions. Birds’ site fidelity is constrained by both sea-ice conditions around the colony that limit movements and resources availability, and also behavioural repeatability of individuals driven by phenological constraints. Adélie penguins favoured sea-ice concentrations between 20–30%, as these facilitate access to open water while opening multiple patches for exploration in restricted areas in case of prey depletion. When the sea-ice concentration became greater than 30%, foraging site fidelity decreased and showed higher variability, while it increased again after 60%. Between two trips, the foraging site fidelity remained high when sea-ice concentration changed by ± 10% but showed greater variability when sea-ice concentrations differed on a larger range. In summary, Adélie penguins specialize their foraging behaviour during chick-rearing according to sea-ice conditions to enhance their reproductive success. The balance between being consistent under favourable environmental conditions vs. being flexible under more challenging conditions may be key to improving foraging efficiency and reproductive success to face fast environmental changes. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Michelot, Candice Kato, Akiko Raclot, Thierry Ropert‐coudert, Yan |
author_facet |
Michelot, Candice Kato, Akiko Raclot, Thierry Ropert‐coudert, Yan |
author_sort |
Michelot, Candice |
title |
Adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions |
title_short |
Adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions |
title_full |
Adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions |
title_fullStr |
Adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions |
title_full_unstemmed |
Adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions |
title_sort |
adélie penguins foraging consistency and site fidelity are conditioned by breeding status and environmental conditions |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03139521 https://doi.org/10.1371/journal.pone.0244298 |
genre |
Antarc* Antarctica Pygoscelis adeliae Sea ice |
genre_facet |
Antarc* Antarctica Pygoscelis adeliae Sea ice |
op_source |
ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-03139521 PLoS ONE, 2021, 16 (1), pp.e0244298. ⟨10.1371/journal.pone.0244298⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0244298 hal-03139521 https://hal.science/hal-03139521 doi:10.1371/journal.pone.0244298 PUBMEDCENTRAL: PMC7822312 |
op_doi |
https://doi.org/10.1371/journal.pone.0244298 |
container_title |
PLOS ONE |
container_volume |
16 |
container_issue |
1 |
container_start_page |
e0244298 |
_version_ |
1766013187327524864 |