Trophic relationships of white-chinned petrels from Crozet Islands: combined stomach oil and conventional dietary analyses
International audience The diet of white-chinned petrels Procellaria aequinoctialis breeding at the Crozet Archipelago (southern Indian Ocean) was studied using two complementary methods: lipid analysis of stomach oils as trophic markers together with the conventional dietary approach (i.e., stomach...
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ftunivnantes:oai:HAL:hal-00182523v1 2023-05-15T13:49:49+02:00 Trophic relationships of white-chinned petrels from Crozet Islands: combined stomach oil and conventional dietary analyses Connan, Maëlle Cherel, Yves Mabille, Géraldine 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) 2007-03 https://hal.science/hal-00182523 https://doi.org/10.1007/s00227-007-0664-6 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-007-0664-6 hal-00182523 https://hal.science/hal-00182523 doi:10.1007/s00227-007-0664-6 Mar Biol https://hal.science/hal-00182523 Mar Biol, 2007, 152, pp.95-107. ⟨10.1007/s00227-007-0664-6⟩ [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society info:eu-repo/semantics/article Journal articles 2007 ftunivnantes https://doi.org/10.1007/s00227-007-0664-6 2023-02-08T08:32:39Z International audience The diet of white-chinned petrels Procellaria aequinoctialis breeding at the Crozet Archipelago (southern Indian Ocean) was studied using two complementary methods: lipid analysis of stomach oils as trophic markers together with the conventional dietary approach (i.e., stomach content analysis). Objectives were (1) to investigate the adult diet when they feed for themselves by analyzing stomach oil lipids, and (2) to compare the lipid signature of chick and adult oils. Stomach oils mainly consisted of triacylglycerols (TAG), diacylglycerol-ethers (DAGE) and wax esters (WE) (66, 14 and 11%, respectively). The dietary origin of TAG and WE was evaluated by linear discriminant analyses with fatty acid and fatty alcohol fractions. Analyses evidenced that stomach oils did not originate from Antarctic krill, but instead from myctophid Wsh, thus demonstrating the importance of mesopelagic Wsh in the nutrition of adult petrels. This result was consistent with the identiWcation of digested remains of myctophids recovered from adult stomach contents after long foraging trips. Large amounts of a rare lipid class, DAGE (up to 76% of total lipids), were identiWed in two stomach oils, together with fresh remains of the squid Gonatus antarcticus (99% by mass), suggesting that DAGE could have the potential to be trophic markers of cephalopods. Moreover, six oils probably originated from Patagonian toothWsh, thus conWrming strong interactions between white-chinned petrels and Wsheries. Comparison between chick and adult stomach oils indicated no major diVerences in their biochemical composition suggesting an identical dietary origin of oils, mainly myctophids. Both adult and chick oils can therefore be used to determine the feeding ecology of adult birds when they feed far away from their breeding grounds. Finally, food analysis of chick samples and adult samples collected after short and long trips indicated diVerent foraging grounds during the two kinds of trips, and also between long trips performed in ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill antarcticus Crozet Islands Université de Nantes: HAL-UNIV-NANTES Antarctic Indian Marine Biology 152 1 95 107 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society Connan, Maëlle Cherel, Yves Mabille, Géraldine Mayzaud, Patrick Trophic relationships of white-chinned petrels from Crozet Islands: combined stomach oil and conventional dietary analyses |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society |
description |
International audience The diet of white-chinned petrels Procellaria aequinoctialis breeding at the Crozet Archipelago (southern Indian Ocean) was studied using two complementary methods: lipid analysis of stomach oils as trophic markers together with the conventional dietary approach (i.e., stomach content analysis). Objectives were (1) to investigate the adult diet when they feed for themselves by analyzing stomach oil lipids, and (2) to compare the lipid signature of chick and adult oils. Stomach oils mainly consisted of triacylglycerols (TAG), diacylglycerol-ethers (DAGE) and wax esters (WE) (66, 14 and 11%, respectively). The dietary origin of TAG and WE was evaluated by linear discriminant analyses with fatty acid and fatty alcohol fractions. Analyses evidenced that stomach oils did not originate from Antarctic krill, but instead from myctophid Wsh, thus demonstrating the importance of mesopelagic Wsh in the nutrition of adult petrels. This result was consistent with the identiWcation of digested remains of myctophids recovered from adult stomach contents after long foraging trips. Large amounts of a rare lipid class, DAGE (up to 76% of total lipids), were identiWed in two stomach oils, together with fresh remains of the squid Gonatus antarcticus (99% by mass), suggesting that DAGE could have the potential to be trophic markers of cephalopods. Moreover, six oils probably originated from Patagonian toothWsh, thus conWrming strong interactions between white-chinned petrels and Wsheries. Comparison between chick and adult stomach oils indicated no major diVerences in their biochemical composition suggesting an identical dietary origin of oils, mainly myctophids. Both adult and chick oils can therefore be used to determine the feeding ecology of adult birds when they feed far away from their breeding grounds. Finally, food analysis of chick samples and adult samples collected after short and long trips indicated diVerent foraging grounds during the two kinds of trips, and also between long trips performed in ... |
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 Mabille, Géraldine Mayzaud, Patrick |
author_facet |
Connan, Maëlle Cherel, Yves Mabille, Géraldine Mayzaud, Patrick |
author_sort |
Connan, Maëlle |
title |
Trophic relationships of white-chinned petrels from Crozet Islands: combined stomach oil and conventional dietary analyses |
title_short |
Trophic relationships of white-chinned petrels from Crozet Islands: combined stomach oil and conventional dietary analyses |
title_full |
Trophic relationships of white-chinned petrels from Crozet Islands: combined stomach oil and conventional dietary analyses |
title_fullStr |
Trophic relationships of white-chinned petrels from Crozet Islands: combined stomach oil and conventional dietary analyses |
title_full_unstemmed |
Trophic relationships of white-chinned petrels from Crozet Islands: combined stomach oil and conventional dietary analyses |
title_sort |
trophic relationships of white-chinned petrels from crozet islands: combined stomach oil and conventional dietary analyses |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00182523 https://doi.org/10.1007/s00227-007-0664-6 |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Antarctic Krill antarcticus Crozet Islands |
genre_facet |
Antarc* Antarctic Antarctic Krill antarcticus Crozet Islands |
op_source |
Mar Biol https://hal.science/hal-00182523 Mar Biol, 2007, 152, pp.95-107. ⟨10.1007/s00227-007-0664-6⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-007-0664-6 hal-00182523 https://hal.science/hal-00182523 doi:10.1007/s00227-007-0664-6 |
op_doi |
https://doi.org/10.1007/s00227-007-0664-6 |
container_title |
Marine Biology |
container_volume |
152 |
container_issue |
1 |
container_start_page |
95 |
op_container_end_page |
107 |
_version_ |
1766252332526338048 |