Sources of variation in maternal allocation in a long‐lived mammal
Abstract Life history theory predicts allocation of energy to reproduction varies with maternal age, but additional maternal features may be important to the allocation of energy to reproduction. We aimed to characterize age‐specific variation in maternal allocation and assess the relationship betwe...
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crwiley:10.1111/1365-2656.13243 2024-06-02T08:15:46+00:00 Sources of variation in maternal allocation in a long‐lived mammal Macdonald, Kaitlin R. Rotella, Jay J. Garrott, Robert A. Link, William A. Koons, David 2020 http://dx.doi.org/10.1111/1365-2656.13243 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2656.13243 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13243 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2656.13243 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13243 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Journal of Animal Ecology volume 89, issue 8, page 1927-1940 ISSN 0021-8790 1365-2656 journal-article 2020 crwiley https://doi.org/10.1111/1365-2656.13243 2024-05-03T12:05:56Z Abstract Life history theory predicts allocation of energy to reproduction varies with maternal age, but additional maternal features may be important to the allocation of energy to reproduction. We aimed to characterize age‐specific variation in maternal allocation and assess the relationship between maternal allocation and other static and dynamic maternal features. Mass measurements of 531 mothers and pups were used with Bayesian hierarchical models to explain the relationship between diverse maternal attributes and both the proportion of mass allocated by Weddell seal mothers, and the efficiency of mass transfer from mother to pup during lactation as well as the weaning mass of pups. Our results demonstrated that maternal mass was strongly and positively associated with the relative reserves allocated by a mother and a pup's weaning mass but that the efficiency of mass transfer declines with maternal parturition mass. Birthdate was positively associated with proportion mass allocation and pup weaning mass, but mass transfer efficiency was predicted to be highest at the mean birthdate. The relative allocation of maternal reserves declined with maternal age but the efficiency of mass transfer to pups increases, suggestive of selective disappearance of poor‐quality mothers. These findings highlight the importance of considering multiple maternal features when assessing variation in maternal allocation. Article in Journal/Newspaper Weddell Seal Wiley Online Library Weddell Journal of Animal Ecology 89 8 1927 1940 |
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Wiley Online Library |
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language |
English |
description |
Abstract Life history theory predicts allocation of energy to reproduction varies with maternal age, but additional maternal features may be important to the allocation of energy to reproduction. We aimed to characterize age‐specific variation in maternal allocation and assess the relationship between maternal allocation and other static and dynamic maternal features. Mass measurements of 531 mothers and pups were used with Bayesian hierarchical models to explain the relationship between diverse maternal attributes and both the proportion of mass allocated by Weddell seal mothers, and the efficiency of mass transfer from mother to pup during lactation as well as the weaning mass of pups. Our results demonstrated that maternal mass was strongly and positively associated with the relative reserves allocated by a mother and a pup's weaning mass but that the efficiency of mass transfer declines with maternal parturition mass. Birthdate was positively associated with proportion mass allocation and pup weaning mass, but mass transfer efficiency was predicted to be highest at the mean birthdate. The relative allocation of maternal reserves declined with maternal age but the efficiency of mass transfer to pups increases, suggestive of selective disappearance of poor‐quality mothers. These findings highlight the importance of considering multiple maternal features when assessing variation in maternal allocation. |
author2 |
Koons, David |
format |
Article in Journal/Newspaper |
author |
Macdonald, Kaitlin R. Rotella, Jay J. Garrott, Robert A. Link, William A. |
spellingShingle |
Macdonald, Kaitlin R. Rotella, Jay J. Garrott, Robert A. Link, William A. Sources of variation in maternal allocation in a long‐lived mammal |
author_facet |
Macdonald, Kaitlin R. Rotella, Jay J. Garrott, Robert A. Link, William A. |
author_sort |
Macdonald, Kaitlin R. |
title |
Sources of variation in maternal allocation in a long‐lived mammal |
title_short |
Sources of variation in maternal allocation in a long‐lived mammal |
title_full |
Sources of variation in maternal allocation in a long‐lived mammal |
title_fullStr |
Sources of variation in maternal allocation in a long‐lived mammal |
title_full_unstemmed |
Sources of variation in maternal allocation in a long‐lived mammal |
title_sort |
sources of variation in maternal allocation in a long‐lived mammal |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/1365-2656.13243 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2656.13243 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13243 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2656.13243 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2656.13243 |
geographic |
Weddell |
geographic_facet |
Weddell |
genre |
Weddell Seal |
genre_facet |
Weddell Seal |
op_source |
Journal of Animal Ecology volume 89, issue 8, page 1927-1940 ISSN 0021-8790 1365-2656 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/1365-2656.13243 |
container_title |
Journal of Animal Ecology |
container_volume |
89 |
container_issue |
8 |
container_start_page |
1927 |
op_container_end_page |
1940 |
_version_ |
1800740058790100992 |