Plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck
Abstract To invest in energetically demanding life history stages, individuals require a substantial amount of resources. Physiological traits, particularly those related to energetics, can be useful for examining variation in life history decisions and trade‐offs because they result from individual...
Published in: | Ecology and Evolution |
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Online Access: | http://dx.doi.org/10.1002/ece3.4873 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4873 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4873 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.4873 |
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crwiley:10.1002/ece3.4873 2024-06-02T08:02:39+00:00 Plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck Hennin, Holly L. Legagneux, Pierre Gilchrist, H. Grant Bêty, Joël McMurtry, John P. Love, Oliver P. Polar Knowledge Canada Natural Sciences and Engineering Research Council of Canada Environment and Climate Change Canada Canada Research Chairs 2019 http://dx.doi.org/10.1002/ece3.4873 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4873 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4873 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.4873 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 9, issue 3, page 1512-1522 ISSN 2045-7758 2045-7758 journal-article 2019 crwiley https://doi.org/10.1002/ece3.4873 2024-05-03T11:52:42Z Abstract To invest in energetically demanding life history stages, individuals require a substantial amount of resources. Physiological traits, particularly those related to energetics, can be useful for examining variation in life history decisions and trade‐offs because they result from individual responses to environmental variation. Leptin is a protein hormone found in mammals that is proportional to the amount of endogenous fat stores within an individual. Recently, researchers have confirmed that a mammalian leptin analogue (MLA), based on the mammalian sequence of leptin, is present with associated receptors and proteins in avian species, with an inhibitory effect on foraging and body mass gain at high circulating levels. While MLA has been both quantified and manipulated in avian species, little is currently known regarding whether plasma MLA in wild‐living species and individuals is associated with key reproductive decisions. We quantified plasma MLA in wild, Arctic‐nesting female common eiders ( Somateria mollissima ) at arrival on the breeding grounds and followed them to determine subsequent breeding propensity, and reproductive phenology, investment, and success. Common eiders are capital‐income breeding birds that require the accumulation of substantial fat stores to initiate laying and successfully complete incubation. We found that females with lower plasma MLA initiated breeding earlier and in a shorter period of time. However, we found no links between plasma MLA levels and breeding propensity, clutch size, or reproductive success. Although little is still known about plasma MLA, based on these results and its role in influencing foraging behaviors and condition gain, plasma MLA appears to be closely linked to reproductive timing and is therefore likely to underlie trade‐offs surrounding life history decisions. Article in Journal/Newspaper Arctic Somateria mollissima Wiley Online Library Arctic Ecology and Evolution 9 3 1512 1522 |
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Open Polar |
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Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract To invest in energetically demanding life history stages, individuals require a substantial amount of resources. Physiological traits, particularly those related to energetics, can be useful for examining variation in life history decisions and trade‐offs because they result from individual responses to environmental variation. Leptin is a protein hormone found in mammals that is proportional to the amount of endogenous fat stores within an individual. Recently, researchers have confirmed that a mammalian leptin analogue (MLA), based on the mammalian sequence of leptin, is present with associated receptors and proteins in avian species, with an inhibitory effect on foraging and body mass gain at high circulating levels. While MLA has been both quantified and manipulated in avian species, little is currently known regarding whether plasma MLA in wild‐living species and individuals is associated with key reproductive decisions. We quantified plasma MLA in wild, Arctic‐nesting female common eiders ( Somateria mollissima ) at arrival on the breeding grounds and followed them to determine subsequent breeding propensity, and reproductive phenology, investment, and success. Common eiders are capital‐income breeding birds that require the accumulation of substantial fat stores to initiate laying and successfully complete incubation. We found that females with lower plasma MLA initiated breeding earlier and in a shorter period of time. However, we found no links between plasma MLA levels and breeding propensity, clutch size, or reproductive success. Although little is still known about plasma MLA, based on these results and its role in influencing foraging behaviors and condition gain, plasma MLA appears to be closely linked to reproductive timing and is therefore likely to underlie trade‐offs surrounding life history decisions. |
author2 |
Polar Knowledge Canada Natural Sciences and Engineering Research Council of Canada Environment and Climate Change Canada Canada Research Chairs |
format |
Article in Journal/Newspaper |
author |
Hennin, Holly L. Legagneux, Pierre Gilchrist, H. Grant Bêty, Joël McMurtry, John P. Love, Oliver P. |
spellingShingle |
Hennin, Holly L. Legagneux, Pierre Gilchrist, H. Grant Bêty, Joël McMurtry, John P. Love, Oliver P. Plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck |
author_facet |
Hennin, Holly L. Legagneux, Pierre Gilchrist, H. Grant Bêty, Joël McMurtry, John P. Love, Oliver P. |
author_sort |
Hennin, Holly L. |
title |
Plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck |
title_short |
Plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck |
title_full |
Plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck |
title_fullStr |
Plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck |
title_full_unstemmed |
Plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck |
title_sort |
plasma mammalian leptin analogue predicts reproductive phenology, but not reproductive output in a capital‐income breeding seaduck |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/ece3.4873 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.4873 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.4873 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.4873 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Somateria mollissima |
genre_facet |
Arctic Somateria mollissima |
op_source |
Ecology and Evolution volume 9, issue 3, page 1512-1522 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.4873 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
3 |
container_start_page |
1512 |
op_container_end_page |
1522 |
_version_ |
1800747126054977536 |