Whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals
International audience The movement and dietary history of individuals can be studied using stable isotope records in archival keratinous tissues. Here, we present a chronology of temporally fine-scale data on the trophic niche of otariid seals by measuring the isotopic signature of serially sampled...
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ftbioemco:oai:HAL:hal-00528653v1 2024-05-19T07:32:24+00:00 Whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals Cherel, Yves Kernaléguen, L. Richard, Patrick Guinet, Christophe Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Biogéochimie et écologie des milieux continentaux (Bioemco) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS) 2009-10-21 https://hal.science/hal-00528653 https://doi.org/10.1098/rsbl.2009.0552 en eng HAL CCSD Royal Society, The info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2009.0552 hal-00528653 https://hal.science/hal-00528653 doi:10.1098/rsbl.2009.0552 PRODINRA: 247082 PUBMEDCENTRAL: PMC2828010 WOS: 000271632000033 ISSN: 1744-9561 Biology Letters https://hal.science/hal-00528653 Biology Letters, 2009, 5, pp.830-832. ⟨10.1098/rsbl.2009.0552⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2009 ftbioemco https://doi.org/10.1098/rsbl.2009.0552 2024-04-25T00:43:03Z International audience The movement and dietary history of individuals can be studied using stable isotope records in archival keratinous tissues. Here, we present a chronology of temporally fine-scale data on the trophic niche of otariid seals by measuring the isotopic signature of serially sampled whiskers. Whiskers of male Antarctic fur seals breeding at the Crozet Islands showed synchronous and regular oscillations in both their d13C and d15N values that are likely to represent their annual migrations over the long term (mean 4.8 years). At the population level, male Antarctic fur seals showed substantial variation in both d13C and d15N values, occupying nearly all the ‘isotopic space' created by the diversity of potential oceanic habitats (from high Antarctica to the subtropics) and prey (from Antarctic krill to subantarctic and subtropical mesopelagic fishes). At the individual level, whisker isotopic signatures depict a large diversity of foraging strategies. Some seals remained in either subantarctic or Antarctic waters, while the migratory cycle of most animals encompassed a wide latitudinal gradient where they fed on different prey. The isotopic signature ofwhiskers, therefore, revealed new multi-year foraging strategies of male Antarctic fur seals and is a powerful tool for investigating the ecological niche during cryptic stages of mammals' life Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seals Antarctic Krill Antarctica Crozet Islands Bioemco: HAL (Biogéochimie et écologie des milieux continentaux) Biology Letters 5 6 830 832 |
institution |
Open Polar |
collection |
Bioemco: HAL (Biogéochimie et écologie des milieux continentaux) |
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ftbioemco |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Cherel, Yves Kernaléguen, L. Richard, Patrick Guinet, Christophe Whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience The movement and dietary history of individuals can be studied using stable isotope records in archival keratinous tissues. Here, we present a chronology of temporally fine-scale data on the trophic niche of otariid seals by measuring the isotopic signature of serially sampled whiskers. Whiskers of male Antarctic fur seals breeding at the Crozet Islands showed synchronous and regular oscillations in both their d13C and d15N values that are likely to represent their annual migrations over the long term (mean 4.8 years). At the population level, male Antarctic fur seals showed substantial variation in both d13C and d15N values, occupying nearly all the ‘isotopic space' created by the diversity of potential oceanic habitats (from high Antarctica to the subtropics) and prey (from Antarctic krill to subantarctic and subtropical mesopelagic fishes). At the individual level, whisker isotopic signatures depict a large diversity of foraging strategies. Some seals remained in either subantarctic or Antarctic waters, while the migratory cycle of most animals encompassed a wide latitudinal gradient where they fed on different prey. The isotopic signature ofwhiskers, therefore, revealed new multi-year foraging strategies of male Antarctic fur seals and is a powerful tool for investigating the ecological niche during cryptic stages of mammals' life |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Biogéochimie et écologie des milieux continentaux (Bioemco) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Cherel, Yves Kernaléguen, L. Richard, Patrick Guinet, Christophe |
author_facet |
Cherel, Yves Kernaléguen, L. Richard, Patrick Guinet, Christophe |
author_sort |
Cherel, Yves |
title |
Whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals |
title_short |
Whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals |
title_full |
Whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals |
title_fullStr |
Whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals |
title_full_unstemmed |
Whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals |
title_sort |
whisker isotopic signature depicts migration patterns and multi-year intra- and inter-individual foraging strategies in fur seals |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-00528653 https://doi.org/10.1098/rsbl.2009.0552 |
genre |
Antarc* Antarctic Antarctic Fur Seals Antarctic Krill Antarctica Crozet Islands |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Antarctic Krill Antarctica Crozet Islands |
op_source |
ISSN: 1744-9561 Biology Letters https://hal.science/hal-00528653 Biology Letters, 2009, 5, pp.830-832. ⟨10.1098/rsbl.2009.0552⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2009.0552 hal-00528653 https://hal.science/hal-00528653 doi:10.1098/rsbl.2009.0552 PRODINRA: 247082 PUBMEDCENTRAL: PMC2828010 WOS: 000271632000033 |
op_doi |
https://doi.org/10.1098/rsbl.2009.0552 |
container_title |
Biology Letters |
container_volume |
5 |
container_issue |
6 |
container_start_page |
830 |
op_container_end_page |
832 |
_version_ |
1799470437771509760 |