Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses
Very little is known about trophic ontogenetic changes over the prolonged immaturity period of long-lived, wide-ranging seabirds. By using blood and feather trophic tracers (δ 13 C and δ 15 N, and mercury, Hg), we studied age-related changes in feeding ecology during the immature phase of wandering...
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crroyalsociety:10.1098/rsos.171039 2024-09-09T19:38:01+00:00 Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses Carravieri, Alice Weimerskirch, Henri Bustamante, Paco Cherel, Yves FP7 Ideas: European Research Council 2017 http://dx.doi.org/10.1098/rsos.171039 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171039 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.171039 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Royal Society Open Science volume 4, issue 10, page 171039 ISSN 2054-5703 journal-article 2017 crroyalsociety https://doi.org/10.1098/rsos.171039 2024-06-17T04:20:05Z Very little is known about trophic ontogenetic changes over the prolonged immaturity period of long-lived, wide-ranging seabirds. By using blood and feather trophic tracers (δ 13 C and δ 15 N, and mercury, Hg), we studied age-related changes in feeding ecology during the immature phase of wandering albatrosses Diomedea exulans when they gradually change from a pure oceanic life to visits to their future breeding grounds. Immatures fed in subtropical waters at high trophic positions during moult. Between- and within-individual variations in isotopic niche were very high, irrespective of age, highlighting wide-ranging exploratory behaviours. In summer, while acting as central-place foragers from their future breeding colony, individuals progressively relied on lower trophic level prey and/or southern latitudes as they aged, until occupying a similar isotopic niche to that of adults. Immatures had exceptionally high Hg burdens, with males having lower Hg concentrations than females, suggesting that they foraged more in subantarctic waters. Our findings suggest a progressive ontogenetic niche shift during central-place foraging of this long-lived species. Article in Journal/Newspaper Diomedea exulans The Royal Society Royal Society Open Science 4 10 171039 |
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Open Polar |
collection |
The Royal Society |
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crroyalsociety |
language |
English |
description |
Very little is known about trophic ontogenetic changes over the prolonged immaturity period of long-lived, wide-ranging seabirds. By using blood and feather trophic tracers (δ 13 C and δ 15 N, and mercury, Hg), we studied age-related changes in feeding ecology during the immature phase of wandering albatrosses Diomedea exulans when they gradually change from a pure oceanic life to visits to their future breeding grounds. Immatures fed in subtropical waters at high trophic positions during moult. Between- and within-individual variations in isotopic niche were very high, irrespective of age, highlighting wide-ranging exploratory behaviours. In summer, while acting as central-place foragers from their future breeding colony, individuals progressively relied on lower trophic level prey and/or southern latitudes as they aged, until occupying a similar isotopic niche to that of adults. Immatures had exceptionally high Hg burdens, with males having lower Hg concentrations than females, suggesting that they foraged more in subantarctic waters. Our findings suggest a progressive ontogenetic niche shift during central-place foraging of this long-lived species. |
author2 |
FP7 Ideas: European Research Council |
format |
Article in Journal/Newspaper |
author |
Carravieri, Alice Weimerskirch, Henri Bustamante, Paco Cherel, Yves |
spellingShingle |
Carravieri, Alice Weimerskirch, Henri Bustamante, Paco Cherel, Yves Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses |
author_facet |
Carravieri, Alice Weimerskirch, Henri Bustamante, Paco Cherel, Yves |
author_sort |
Carravieri, Alice |
title |
Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses |
title_short |
Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses |
title_full |
Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses |
title_fullStr |
Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses |
title_full_unstemmed |
Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses |
title_sort |
progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses |
publisher |
The Royal Society |
publishDate |
2017 |
url |
http://dx.doi.org/10.1098/rsos.171039 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171039 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.171039 |
genre |
Diomedea exulans |
genre_facet |
Diomedea exulans |
op_source |
Royal Society Open Science volume 4, issue 10, page 171039 ISSN 2054-5703 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsos.171039 |
container_title |
Royal Society Open Science |
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4 |
container_issue |
10 |
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171039 |
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1809907056201695232 |