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 (δ13C and δ15N, and mercury, Hg), we studied age-related changes in feeding ecology during the immature phase of wandering alba...
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ftdoajarticles:oai:doaj.org/article:0a264245ae1b463c8b6848dba32f6859 2023-05-15T16:00:55+02:00 Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses Alice Carravieri Henri Weimerskirch Paco Bustamante Yves Cherel 2017-01-01T00:00:00Z https://doi.org/10.1098/rsos.171039 https://doaj.org/article/0a264245ae1b463c8b6848dba32f6859 EN eng The Royal Society https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171039 https://doaj.org/toc/2054-5703 2054-5703 doi:10.1098/rsos.171039 https://doaj.org/article/0a264245ae1b463c8b6848dba32f6859 Royal Society Open Science, Vol 4, Iss 10 (2017) stable isotopes mercury moult feeding ecology subtropics subantarctic Science Q article 2017 ftdoajarticles https://doi.org/10.1098/rsos.171039 2022-12-31T01:15:35Z 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 (δ13C and δ15N, 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 Directory of Open Access Journals: DOAJ Articles Royal Society Open Science 4 10 171039 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
stable isotopes mercury moult feeding ecology subtropics subantarctic Science Q |
spellingShingle |
stable isotopes mercury moult feeding ecology subtropics subantarctic Science Q Alice Carravieri Henri Weimerskirch Paco Bustamante Yves Cherel Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses |
topic_facet |
stable isotopes mercury moult feeding ecology subtropics subantarctic Science Q |
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 (δ13C and δ15N, 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. |
format |
Article in Journal/Newspaper |
author |
Alice Carravieri Henri Weimerskirch Paco Bustamante Yves Cherel |
author_facet |
Alice Carravieri Henri Weimerskirch Paco Bustamante Yves Cherel |
author_sort |
Alice Carravieri |
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 |
https://doi.org/10.1098/rsos.171039 https://doaj.org/article/0a264245ae1b463c8b6848dba32f6859 |
genre |
Diomedea exulans |
genre_facet |
Diomedea exulans |
op_source |
Royal Society Open Science, Vol 4, Iss 10 (2017) |
op_relation |
https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.171039 https://doaj.org/toc/2054-5703 2054-5703 doi:10.1098/rsos.171039 https://doaj.org/article/0a264245ae1b463c8b6848dba32f6859 |
op_doi |
https://doi.org/10.1098/rsos.171039 |
container_title |
Royal Society Open Science |
container_volume |
4 |
container_issue |
10 |
container_start_page |
171039 |
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1766396935267155968 |