Environmental and senescent related variations in Weddell seal body mass: implications for age‐specific reproductive performance
Recent studies have found age‐specific variations in reproductive performance amongst Weddell seals, Leptonychotes weddellii , and we hypothesized age‐related variations in maternal body mass as a mechanism linking maternal age and the observed patterns of reproductive performance. We evaluated the...
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crwiley:10.1111/j.0030-1299.2007.16139.x 2024-09-15T18:35:28+00:00 Environmental and senescent related variations in Weddell seal body mass: implications for age‐specific reproductive performance Proffitt, Kelly M. Garrott, Robert A. Rotella, Jay J. Wheatley, Kathryn E. 2007 http://dx.doi.org/10.1111/j.0030-1299.2007.16139.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0030-1299.2007.16139.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0030-1299.2007.16139.x https://onlinelibrary.wiley.com/doi/full-xml/10.1111/j.0030-1299.2007.16139.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Oikos volume 116, issue 10, page 1683-1690 ISSN 0030-1299 1600-0706 journal-article 2007 crwiley https://doi.org/10.1111/j.0030-1299.2007.16139.x 2024-08-15T04:20:38Z Recent studies have found age‐specific variations in reproductive performance amongst Weddell seals, Leptonychotes weddellii , and we hypothesized age‐related variations in maternal body mass as a mechanism linking maternal age and the observed patterns of reproductive performance. We evaluated the effects of maternal traits such as age and reproductive experience and the effects of environmental variations on maternal body mass at parturition. Maternal body mass at parturition showed substantial age‐ and environmental‐related variations. Maternal body mass increased with age through the young and middle ages, and evidence of senescent declines in body mass was found amongst the oldest ages. Additionally, body mass at parturition was strongly influenced by environmental variations during the pregnancy period, specifically sea‐ice extent and the state of the El‐Niño Southern Oscillation. Patterns of age‐specific variations in body mass were consistent with age‐specific patterns of offspring survival probability, which supported our hypothesis that changes in body mass link maternal age and reproductive performance in the Weddell seal. Further, environmental conditions during pregnancy may be an important component of Weddell seal reproductive performance. Article in Journal/Newspaper Sea ice Weddell Seal Weddell Seals Wiley Online Library Oikos 116 10 1683 1690 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Recent studies have found age‐specific variations in reproductive performance amongst Weddell seals, Leptonychotes weddellii , and we hypothesized age‐related variations in maternal body mass as a mechanism linking maternal age and the observed patterns of reproductive performance. We evaluated the effects of maternal traits such as age and reproductive experience and the effects of environmental variations on maternal body mass at parturition. Maternal body mass at parturition showed substantial age‐ and environmental‐related variations. Maternal body mass increased with age through the young and middle ages, and evidence of senescent declines in body mass was found amongst the oldest ages. Additionally, body mass at parturition was strongly influenced by environmental variations during the pregnancy period, specifically sea‐ice extent and the state of the El‐Niño Southern Oscillation. Patterns of age‐specific variations in body mass were consistent with age‐specific patterns of offspring survival probability, which supported our hypothesis that changes in body mass link maternal age and reproductive performance in the Weddell seal. Further, environmental conditions during pregnancy may be an important component of Weddell seal reproductive performance. |
format |
Article in Journal/Newspaper |
author |
Proffitt, Kelly M. Garrott, Robert A. Rotella, Jay J. Wheatley, Kathryn E. |
spellingShingle |
Proffitt, Kelly M. Garrott, Robert A. Rotella, Jay J. Wheatley, Kathryn E. Environmental and senescent related variations in Weddell seal body mass: implications for age‐specific reproductive performance |
author_facet |
Proffitt, Kelly M. Garrott, Robert A. Rotella, Jay J. Wheatley, Kathryn E. |
author_sort |
Proffitt, Kelly M. |
title |
Environmental and senescent related variations in Weddell seal body mass: implications for age‐specific reproductive performance |
title_short |
Environmental and senescent related variations in Weddell seal body mass: implications for age‐specific reproductive performance |
title_full |
Environmental and senescent related variations in Weddell seal body mass: implications for age‐specific reproductive performance |
title_fullStr |
Environmental and senescent related variations in Weddell seal body mass: implications for age‐specific reproductive performance |
title_full_unstemmed |
Environmental and senescent related variations in Weddell seal body mass: implications for age‐specific reproductive performance |
title_sort |
environmental and senescent related variations in weddell seal body mass: implications for age‐specific reproductive performance |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1111/j.0030-1299.2007.16139.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0030-1299.2007.16139.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0030-1299.2007.16139.x https://onlinelibrary.wiley.com/doi/full-xml/10.1111/j.0030-1299.2007.16139.x |
genre |
Sea ice Weddell Seal Weddell Seals |
genre_facet |
Sea ice Weddell Seal Weddell Seals |
op_source |
Oikos volume 116, issue 10, page 1683-1690 ISSN 0030-1299 1600-0706 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0030-1299.2007.16139.x |
container_title |
Oikos |
container_volume |
116 |
container_issue |
10 |
container_start_page |
1683 |
op_container_end_page |
1690 |
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1810478652518825984 |