Low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped
Individuals are unique in how they interact with and respond to their environment. Correspondingly, unpredictable challenges or environmental stressors often produce an individualized response of the hypothalamic‐pituitary‐adrenal (HPA) axis and its downstream effector cortisol. We used a fully cros...
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ftpubmed:oai:pubmedcentral.nih.gov:8956859 2023-05-15T14:05:23+02:00 Low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped Nagel, Rebecca Kaiser, Sylvia Stainfield, Claire Toscani, Camille Fox‐Clarke, Cameron Paijmans, Anneke J. Costa Castro, Camila Vendrami, David L. J. Forcada, Jaume Hoffman, Joseph I. 2022-03-26 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8956859/ http://www.ncbi.nlm.nih.gov/pubmed/35356576 https://doi.org/10.1002/ece3.8757 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8956859/ http://www.ncbi.nlm.nih.gov/pubmed/35356576 http://dx.doi.org/10.1002/ece3.8757 © 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Ecol Evol Research Articles Text 2022 ftpubmed https://doi.org/10.1002/ece3.8757 2022-04-03T01:00:11Z Individuals are unique in how they interact with and respond to their environment. Correspondingly, unpredictable challenges or environmental stressors often produce an individualized response of the hypothalamic‐pituitary‐adrenal (HPA) axis and its downstream effector cortisol. We used a fully crossed, repeated measures design to investigate the factors shaping individual variation in baseline cortisol in Antarctic fur seal pups and their mothers. Saliva samples were collected from focal individuals at two breeding colonies, one with low and the other with high density, during two consecutive years of contrasting food availability. Mothers and pups were sampled concurrently at birth and shortly before weaning, while pups were additionally sampled every 20 days. We found that heritability was low for baseline cortisol, while within‐individual repeatability and among‐individual variability were high. A substantial proportion of the variation in baseline cortisol could be explained in pups and mothers by a combination of intrinsic and extrinsic factors including sex, weight, day, season, and colony of birth. Our findings provide detailed insights into the individualization of endocrine phenotypes and their genetic and environmental drivers in a wild pinniped. Furthermore, the strong associations between cortisol and life history traits that we report in fur seals could have important implications for understanding the population dynamics of species impacted by environmental change. Text Antarc* Antarctic Antarctic Fur Seal PubMed Central (PMC) Antarctic Ecology and Evolution 12 3 |
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Research Articles |
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Research Articles Nagel, Rebecca Kaiser, Sylvia Stainfield, Claire Toscani, Camille Fox‐Clarke, Cameron Paijmans, Anneke J. Costa Castro, Camila Vendrami, David L. J. Forcada, Jaume Hoffman, Joseph I. Low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped |
topic_facet |
Research Articles |
description |
Individuals are unique in how they interact with and respond to their environment. Correspondingly, unpredictable challenges or environmental stressors often produce an individualized response of the hypothalamic‐pituitary‐adrenal (HPA) axis and its downstream effector cortisol. We used a fully crossed, repeated measures design to investigate the factors shaping individual variation in baseline cortisol in Antarctic fur seal pups and their mothers. Saliva samples were collected from focal individuals at two breeding colonies, one with low and the other with high density, during two consecutive years of contrasting food availability. Mothers and pups were sampled concurrently at birth and shortly before weaning, while pups were additionally sampled every 20 days. We found that heritability was low for baseline cortisol, while within‐individual repeatability and among‐individual variability were high. A substantial proportion of the variation in baseline cortisol could be explained in pups and mothers by a combination of intrinsic and extrinsic factors including sex, weight, day, season, and colony of birth. Our findings provide detailed insights into the individualization of endocrine phenotypes and their genetic and environmental drivers in a wild pinniped. Furthermore, the strong associations between cortisol and life history traits that we report in fur seals could have important implications for understanding the population dynamics of species impacted by environmental change. |
format |
Text |
author |
Nagel, Rebecca Kaiser, Sylvia Stainfield, Claire Toscani, Camille Fox‐Clarke, Cameron Paijmans, Anneke J. Costa Castro, Camila Vendrami, David L. J. Forcada, Jaume Hoffman, Joseph I. |
author_facet |
Nagel, Rebecca Kaiser, Sylvia Stainfield, Claire Toscani, Camille Fox‐Clarke, Cameron Paijmans, Anneke J. Costa Castro, Camila Vendrami, David L. J. Forcada, Jaume Hoffman, Joseph I. |
author_sort |
Nagel, Rebecca |
title |
Low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped |
title_short |
Low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped |
title_full |
Low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped |
title_fullStr |
Low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped |
title_full_unstemmed |
Low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped |
title_sort |
low heritability and high phenotypic plasticity of salivary cortisol in response to environmental heterogeneity in a wild pinniped |
publisher |
John Wiley and Sons Inc. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8956859/ http://www.ncbi.nlm.nih.gov/pubmed/35356576 https://doi.org/10.1002/ece3.8757 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctic Fur Seal |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal |
op_source |
Ecol Evol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8956859/ http://www.ncbi.nlm.nih.gov/pubmed/35356576 http://dx.doi.org/10.1002/ece3.8757 |
op_rights |
© 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.8757 |
container_title |
Ecology and Evolution |
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12 |
container_issue |
3 |
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1766277215146737664 |