Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean
International audience We investigated the relative importance of myctophid fish and Antarctic krill in the diet of adult flying seabirds of the Southern Ocean. The main prey of short-tailed shearwaters Puffinus tenuirostris (P. ten.), white-chinned petrels Procellaria aequinoctialis (P. aeq.), blue...
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ftunivnantes:oai:HAL:hal-00204170v1 2023-05-15T13:40:46+02:00 Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean Connan, Maëlle Cherel, Yves Mayzaud, Patrick Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2007 https://hal.science/hal-00204170 en eng HAL CCSD Association for the Sciences of Limnology and Oceanography hal-00204170 https://hal.science/hal-00204170 ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.science/hal-00204170 Limnology and Oceanography, 2007, 52, pp.2445-2455 [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2007 ftunivnantes 2023-02-08T07:52:18Z International audience We investigated the relative importance of myctophid fish and Antarctic krill in the diet of adult flying seabirds of the Southern Ocean. The main prey of short-tailed shearwaters Puffinus tenuirostris (P. ten.), white-chinned petrels Procellaria aequinoctialis (P. aeq.), blue petrels Halobaena caerulea (H. cae.), thin-billed prions Pachyptila belcheri (P. bel.), and Antarctic prions Pachyptila desolata (P. des.) were mostly deduced from the lipid analysis of adult stomach oils. More than 97% of the 125 analyzed oils mainly consisted of wax esters (WEs) and triacylglycerols (TAGs) (.70% of total lipids). WE fatty alcohol (FAlc), WE fatty acid (FA), and TAG-FA profiles clearly segregated P. aeq. from P. ten., with smaller, but still significant, differences among the three other petrel species. P. aeq. and P. ten. therefore preyed on distinct prey species, whereas H. cae., P. bel., and P. des. had a more similar diet, but still with some prey differences. Comparisons between FAlc and FA patterns of oils with those of potential prey species showed that .93% of FAlc and FA patterns of oil WEs had a high probability of resemblance with the myctophid signatures, and similar results were obtained with the TAG fractions. Almost no stomach oil fit the lipid patterns of subantarctic and Antarctic euphausiids, including those of the WE-rich Thysanoessa macrura and the TAG-rich Antarctic krill Euphausia superba. This study thus demonstrates for the first time the importance of myctophids in the nutrition of adult flying seabirds breeding in subantarctic islands and foraging in Antarctic waters during the austral summer. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Pachyptila desolata Puffinus tenuirostris Southern Ocean Thysanoessa macrura Université de Nantes: HAL-UNIV-NANTES Antarctic Southern Ocean Austral |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology Connan, Maëlle Cherel, Yves Mayzaud, Patrick Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience We investigated the relative importance of myctophid fish and Antarctic krill in the diet of adult flying seabirds of the Southern Ocean. The main prey of short-tailed shearwaters Puffinus tenuirostris (P. ten.), white-chinned petrels Procellaria aequinoctialis (P. aeq.), blue petrels Halobaena caerulea (H. cae.), thin-billed prions Pachyptila belcheri (P. bel.), and Antarctic prions Pachyptila desolata (P. des.) were mostly deduced from the lipid analysis of adult stomach oils. More than 97% of the 125 analyzed oils mainly consisted of wax esters (WEs) and triacylglycerols (TAGs) (.70% of total lipids). WE fatty alcohol (FAlc), WE fatty acid (FA), and TAG-FA profiles clearly segregated P. aeq. from P. ten., with smaller, but still significant, differences among the three other petrel species. P. aeq. and P. ten. therefore preyed on distinct prey species, whereas H. cae., P. bel., and P. des. had a more similar diet, but still with some prey differences. Comparisons between FAlc and FA patterns of oils with those of potential prey species showed that .93% of FAlc and FA patterns of oil WEs had a high probability of resemblance with the myctophid signatures, and similar results were obtained with the TAG fractions. Almost no stomach oil fit the lipid patterns of subantarctic and Antarctic euphausiids, including those of the WE-rich Thysanoessa macrura and the TAG-rich Antarctic krill Euphausia superba. This study thus demonstrates for the first time the importance of myctophids in the nutrition of adult flying seabirds breeding in subantarctic islands and foraging in Antarctic waters during the austral summer. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Connan, Maëlle Cherel, Yves Mayzaud, Patrick |
author_facet |
Connan, Maëlle Cherel, Yves Mayzaud, Patrick |
author_sort |
Connan, Maëlle |
title |
Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean |
title_short |
Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean |
title_full |
Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean |
title_fullStr |
Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean |
title_full_unstemmed |
Lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the Southern Ocean |
title_sort |
lipids from stomach oil of procellariiform seabirds document the importance of myctophid fish in the southern ocean |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00204170 |
geographic |
Antarctic Southern Ocean Austral |
geographic_facet |
Antarctic Southern Ocean Austral |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Pachyptila desolata Puffinus tenuirostris Southern Ocean Thysanoessa macrura |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Pachyptila desolata Puffinus tenuirostris Southern Ocean Thysanoessa macrura |
op_source |
ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.science/hal-00204170 Limnology and Oceanography, 2007, 52, pp.2445-2455 |
op_relation |
hal-00204170 https://hal.science/hal-00204170 |
_version_ |
1766139820617236480 |