O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation
Maternal effects are widespread in ecology and can alter the dynamics of a population. We investigated the impact of maternal foraging strategies on offspring weaning mass—a proxy of maternal foraging success and of offspring survival—in southern elephant seals on îles Kerguelen. Using 4 years of da...
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ftpubmed:oai:pubmedcentral.nih.gov:3350709 2023-05-15T13:48:21+02:00 O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation Authier, Matthieu Dragon, Anne-Cécile Richard, Pierre Cherel, Yves Guinet, Christophe 2012-07-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350709 http://www.ncbi.nlm.nih.gov/pubmed/22398171 https://doi.org/10.1098/rspb.2012.0199 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350709 http://www.ncbi.nlm.nih.gov/pubmed/22398171 http://dx.doi.org/10.1098/rspb.2012.0199 This journal is © 2012 The Royal Society Research Articles Text 2012 ftpubmed https://doi.org/10.1098/rspb.2012.0199 2013-09-04T07:08:37Z Maternal effects are widespread in ecology and can alter the dynamics of a population. We investigated the impact of maternal foraging strategies on offspring weaning mass—a proxy of maternal foraging success and of offspring survival—in southern elephant seals on îles Kerguelen. Using 4 years of data, we modelled pup weaning mass as a two-component mixture and used blood stable isotope values to discriminate between maternal foraging strategies previously identified from bio-logging studies. Carbon isotope ratio was a strong predictor of weaning mass, but the relationship was non-monotonic in contrast to a priori expectations. Females foraging in the interfrontal zone weaned pups with a smaller mass compared with females foraging in Antarctic waters. Pup mass was positively correlated with a proxy of global primary production in the interfrontal zone for small weanlings. Maternal effects, via a poor foraging efficiency in the 1970s, may help explain the large population decrease observed at that time on îles Kerguelen because of an overall decrease in pup weaning mass, survival and subsequent recruitment. Text Antarc* Antarctic Elephant Seal Elephant Seals Southern Elephant Seal Southern Elephant Seals PubMed Central (PMC) Antarctic Îles Kerguelen ENVELOPE(69.167,69.167,-49.250,-49.250) Kerguelen Proceedings of the Royal Society B: Biological Sciences 279 1738 2681 2690 |
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Research Articles |
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Research Articles Authier, Matthieu Dragon, Anne-Cécile Richard, Pierre Cherel, Yves Guinet, Christophe O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation |
topic_facet |
Research Articles |
description |
Maternal effects are widespread in ecology and can alter the dynamics of a population. We investigated the impact of maternal foraging strategies on offspring weaning mass—a proxy of maternal foraging success and of offspring survival—in southern elephant seals on îles Kerguelen. Using 4 years of data, we modelled pup weaning mass as a two-component mixture and used blood stable isotope values to discriminate between maternal foraging strategies previously identified from bio-logging studies. Carbon isotope ratio was a strong predictor of weaning mass, but the relationship was non-monotonic in contrast to a priori expectations. Females foraging in the interfrontal zone weaned pups with a smaller mass compared with females foraging in Antarctic waters. Pup mass was positively correlated with a proxy of global primary production in the interfrontal zone for small weanlings. Maternal effects, via a poor foraging efficiency in the 1970s, may help explain the large population decrease observed at that time on îles Kerguelen because of an overall decrease in pup weaning mass, survival and subsequent recruitment. |
format |
Text |
author |
Authier, Matthieu Dragon, Anne-Cécile Richard, Pierre Cherel, Yves Guinet, Christophe |
author_facet |
Authier, Matthieu Dragon, Anne-Cécile Richard, Pierre Cherel, Yves Guinet, Christophe |
author_sort |
Authier, Matthieu |
title |
O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation |
title_short |
O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation |
title_full |
O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation |
title_fullStr |
O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation |
title_full_unstemmed |
O' mother where wert thou? Maternal strategies in the southern elephant seal: a stable isotope investigation |
title_sort |
o' mother where wert thou? maternal strategies in the southern elephant seal: a stable isotope investigation |
publisher |
The Royal Society |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350709 http://www.ncbi.nlm.nih.gov/pubmed/22398171 https://doi.org/10.1098/rspb.2012.0199 |
long_lat |
ENVELOPE(69.167,69.167,-49.250,-49.250) |
geographic |
Antarctic Îles Kerguelen Kerguelen |
geographic_facet |
Antarctic Îles Kerguelen Kerguelen |
genre |
Antarc* Antarctic Elephant Seal Elephant Seals Southern Elephant Seal Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Elephant Seal Elephant Seals Southern Elephant Seal Southern Elephant Seals |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3350709 http://www.ncbi.nlm.nih.gov/pubmed/22398171 http://dx.doi.org/10.1098/rspb.2012.0199 |
op_rights |
This journal is © 2012 The Royal Society |
op_doi |
https://doi.org/10.1098/rspb.2012.0199 |
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Proceedings of the Royal Society B: Biological Sciences |
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279 |
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1738 |
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2681 |
op_container_end_page |
2690 |
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1766249161248735232 |