Breeding under pressure: Corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck
International audience Phenotypic plasticity may enable individuals to cope with predictable and unpredictable environments during their life-cycle. In that context, studying glucocorticoids—corticosterone (CORT) in birds—is relevant because of their primary role in allostasis. Higher baseline CORT...
Published in: | Functional Ecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2023
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Online Access: | https://hal.science/hal-04222413 https://hal.science/hal-04222413/document https://hal.science/hal-04222413/file/MohringFunctionalEcology.pdf https://doi.org/10.1111/1365-2435.14435 |
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ftccsdartic:oai:HAL:hal-04222413v1 2024-02-27T08:39:45+00:00 Breeding under pressure: Corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck Mohring, Bertille Öst, Markus Jaatinen, Kim Parenteau, Charline Grimaud, Emmanuelle Angelier, Frédéric Environmental and Marine Biology Åbo Academy University 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) Nature and Game Management Trust Finland Finland Tvärminne Zoological Station Zoological Station 2023 https://hal.science/hal-04222413 https://hal.science/hal-04222413/document https://hal.science/hal-04222413/file/MohringFunctionalEcology.pdf https://doi.org/10.1111/1365-2435.14435 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2435.14435 hal-04222413 https://hal.science/hal-04222413 https://hal.science/hal-04222413/document https://hal.science/hal-04222413/file/MohringFunctionalEcology.pdf doi:10.1111/1365-2435.14435 WOS: 001072492700001 info:eu-repo/semantics/OpenAccess ISSN: 0269-8463 EISSN: 1365-2435 Functional Ecology https://hal.science/hal-04222413 Functional Ecology, In press, ⟨10.1111/1365-2435.14435⟩ baseline corticosterone common eider Somateria mollissima corticosterone-adaptation hypothesis corticosterone-fitness hypothesis endocrine plasticity glucocorticoids predation risk reproduction [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2023 ftccsdartic https://doi.org/10.1111/1365-2435.14435 2024-01-28T00:32:18Z International audience Phenotypic plasticity may enable individuals to cope with predictable and unpredictable environments during their life-cycle. In that context, studying glucocorticoids—corticosterone (CORT) in birds—is relevant because of their primary role in allostasis. Higher baseline CORT levels are classically associated with environmental constraints and lower fitness (the CORT-fitness hypothesis). However, in some environments, higher baseline CORT levels can promote reproduction, therefore being associated with higher fitness (the CORT-adaptation hypothesis). These two hypotheses have been tested in multiple systems but rarely in a context of fluctuating predation threat.We used a long-term individual-based monitoring of baseline CORT levels in female common eiders Somateria mollissima (nCORT = 1537; nindividual = 790; 2009–2022) to disentangle the context-dependent links between environmental conditions, CORT and fitness. Importantly, the study population has been facing a drastic increase in predation pressure over the past decades, linked to the recovery of the white-tailed eagle Haliaeetus albicilla. Additionally, eiders breed on open or forested islands, further affecting adult and nest predation risk. This system allowed us to disentangle the relative contributions of within- and among-individual variation in baseline CORT levels under predation.Supporting the CORT-adaptation hypothesis, baseline CORT levels were positively associated with reproductive investment (clutch size), age and hatching success. By partitioning within- and among-individual effects, we showed that at the individual level, CORT flexibly increased with clutch size and age. Females displaying higher CORT levels were more successful, suggesting a link between CORT and individual quality.At both the population and individual levels, baseline CORT levels decreased over the study period. This decrease was correlated with an increase in predation risk. Females had reduced baseline CORT when nesting under high eagle abundance ... Article in Journal/Newspaper Common Eider Haliaeetus albicilla Somateria mollissima White-tailed eagle Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Functional Ecology |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
baseline corticosterone common eider Somateria mollissima corticosterone-adaptation hypothesis corticosterone-fitness hypothesis endocrine plasticity glucocorticoids predation risk reproduction [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
baseline corticosterone common eider Somateria mollissima corticosterone-adaptation hypothesis corticosterone-fitness hypothesis endocrine plasticity glucocorticoids predation risk reproduction [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology Mohring, Bertille Öst, Markus Jaatinen, Kim Parenteau, Charline Grimaud, Emmanuelle Angelier, Frédéric Breeding under pressure: Corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck |
topic_facet |
baseline corticosterone common eider Somateria mollissima corticosterone-adaptation hypothesis corticosterone-fitness hypothesis endocrine plasticity glucocorticoids predation risk reproduction [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Phenotypic plasticity may enable individuals to cope with predictable and unpredictable environments during their life-cycle. In that context, studying glucocorticoids—corticosterone (CORT) in birds—is relevant because of their primary role in allostasis. Higher baseline CORT levels are classically associated with environmental constraints and lower fitness (the CORT-fitness hypothesis). However, in some environments, higher baseline CORT levels can promote reproduction, therefore being associated with higher fitness (the CORT-adaptation hypothesis). These two hypotheses have been tested in multiple systems but rarely in a context of fluctuating predation threat.We used a long-term individual-based monitoring of baseline CORT levels in female common eiders Somateria mollissima (nCORT = 1537; nindividual = 790; 2009–2022) to disentangle the context-dependent links between environmental conditions, CORT and fitness. Importantly, the study population has been facing a drastic increase in predation pressure over the past decades, linked to the recovery of the white-tailed eagle Haliaeetus albicilla. Additionally, eiders breed on open or forested islands, further affecting adult and nest predation risk. This system allowed us to disentangle the relative contributions of within- and among-individual variation in baseline CORT levels under predation.Supporting the CORT-adaptation hypothesis, baseline CORT levels were positively associated with reproductive investment (clutch size), age and hatching success. By partitioning within- and among-individual effects, we showed that at the individual level, CORT flexibly increased with clutch size and age. Females displaying higher CORT levels were more successful, suggesting a link between CORT and individual quality.At both the population and individual levels, baseline CORT levels decreased over the study period. This decrease was correlated with an increase in predation risk. Females had reduced baseline CORT when nesting under high eagle abundance ... |
author2 |
Environmental and Marine Biology Åbo Academy University 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) Nature and Game Management Trust Finland Finland Tvärminne Zoological Station Zoological Station |
format |
Article in Journal/Newspaper |
author |
Mohring, Bertille Öst, Markus Jaatinen, Kim Parenteau, Charline Grimaud, Emmanuelle Angelier, Frédéric |
author_facet |
Mohring, Bertille Öst, Markus Jaatinen, Kim Parenteau, Charline Grimaud, Emmanuelle Angelier, Frédéric |
author_sort |
Mohring, Bertille |
title |
Breeding under pressure: Corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck |
title_short |
Breeding under pressure: Corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck |
title_full |
Breeding under pressure: Corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck |
title_fullStr |
Breeding under pressure: Corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck |
title_full_unstemmed |
Breeding under pressure: Corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck |
title_sort |
breeding under pressure: corticosterone is associated with reproductive investment under fluctuating predation risk in a long‐lived sea duck |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04222413 https://hal.science/hal-04222413/document https://hal.science/hal-04222413/file/MohringFunctionalEcology.pdf https://doi.org/10.1111/1365-2435.14435 |
genre |
Common Eider Haliaeetus albicilla Somateria mollissima White-tailed eagle |
genre_facet |
Common Eider Haliaeetus albicilla Somateria mollissima White-tailed eagle |
op_source |
ISSN: 0269-8463 EISSN: 1365-2435 Functional Ecology https://hal.science/hal-04222413 Functional Ecology, In press, ⟨10.1111/1365-2435.14435⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2435.14435 hal-04222413 https://hal.science/hal-04222413 https://hal.science/hal-04222413/document https://hal.science/hal-04222413/file/MohringFunctionalEcology.pdf doi:10.1111/1365-2435.14435 WOS: 001072492700001 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1111/1365-2435.14435 |
container_title |
Functional Ecology |
_version_ |
1792046799843753984 |