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...
Published in: | Marine Biology |
---|---|
Main Authors: | , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2007
|
Subjects: | |
Online Access: | https://doi.org/10.1007/s00227-007-0664-6 https://hal.archives-ouvertes.fr/hal-00182523 |
id |
fttriple:oai:gotriple.eu:10670/1.h8sjdt |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:10670/1.h8sjdt 2023-05-15T13:38:44+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) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2007-03-01 https://doi.org/10.1007/s00227-007-0664-6 https://hal.archives-ouvertes.fr/hal-00182523 en eng HAL CCSD hal-00182523 doi:10.1007/s00227-007-0664-6 10670/1.h8sjdt https://hal.archives-ouvertes.fr/hal-00182523 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société Mar Biol Mar Biol, 2007, 152, pp.95-107. ⟨10.1007/s00227-007-0664-6⟩ envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2007 fttriple https://doi.org/10.1007/s00227-007-0664-6 2023-01-22T17:10:39Z 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 Unknown Antarctic Indian Marine Biology 152 1 95 107 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
envir geo |
spellingShingle |
envir geo 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 |
envir geo |
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) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-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://doi.org/10.1007/s00227-007-0664-6 https://hal.archives-ouvertes.fr/hal-00182523 |
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 |
Hyper Article en Ligne - Sciences de l'Homme et de la Société Mar Biol Mar Biol, 2007, 152, pp.95-107. ⟨10.1007/s00227-007-0664-6⟩ |
op_relation |
hal-00182523 doi:10.1007/s00227-007-0664-6 10670/1.h8sjdt https://hal.archives-ouvertes.fr/hal-00182523 |
op_rights |
undefined |
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_ |
1766110534964346880 |