Dietary evidence for spatial foraging segregation in sympatric albatrosses (Diomedea spp.) rearing chicks at Iles Nuageuses, Kerguelen
International audience The food of three closely related and sympatric species of mollymawks (Diomedea spp.), the black-browed (BBA, D. melanophrys), grey-headed (GHA, D. chrysostoma) and yellow-nosed (YNA, D. chlororhynchos) albatrosses, was compared at Iles Nuageuses, Kerguelen, during the chick-r...
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Online Access: | https://hal.science/hal-00192005 https://doi.org/10.1007/s00227-002-0907-5 |
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ftccsdartic:oai:HAL:hal-00192005v1 2024-02-27T08:35:24+00:00 Dietary evidence for spatial foraging segregation in sympatric albatrosses (Diomedea spp.) rearing chicks at Iles Nuageuses, Kerguelen Cherel, Yves Trouve, Colette Weimerskirch, Henri Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2002 https://hal.science/hal-00192005 https://doi.org/10.1007/s00227-002-0907-5 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-002-0907-5 hal-00192005 https://hal.science/hal-00192005 doi:10.1007/s00227-002-0907-5 ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.science/hal-00192005 Marine Biology, 2002, 141, pp.1117-1129. ⟨10.1007/s00227-002-0907-5⟩ [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society info:eu-repo/semantics/article Journal articles 2002 ftccsdartic https://doi.org/10.1007/s00227-002-0907-5 2024-01-28T03:15:23Z International audience The food of three closely related and sympatric species of mollymawks (Diomedea spp.), the black-browed (BBA, D. melanophrys), grey-headed (GHA, D. chrysostoma) and yellow-nosed (YNA, D. chlororhynchos) albatrosses, was compared at Iles Nuageuses, Kerguelen, during the chick-rearing period. BBA preyed almost equally upon cephalopods (39% by fresh mass), fish (31%) and penguins (31%), while GHA fed more on squids (52%, 16% and 28%, respectively) and YNA fed more on fish and not on penguins (13%, 84% and 0%, respectively). Crustaceans were always a minor component of the diet (<3%). Patagonian toothfish was the main fish prey, and Todarodes sp. the main cephalopod prey for the community. Accumulated beaks emphasise the importance of juvenile ommastrephid squids in the diet of mollymawks, accounting for 81%, 71% and 55% of the total number of beaks in BBA, GHA and YNA samples, respectively. BBA preyed also upon a significant number of the octopod Benthoctopus thielei (12%) and of the cranchiid squid Galiteuthis glacialis (4%), while GHA fed more on G. glacialis (18%) and on the onychoteuthid Kondakovia longimana (8%). When feeding on the same prey, prey size was similar for the albatross species. Comparison of overall prey biogeography together with the presence/absence of prey species indicators of water masses indicates segregation through different foraging areas among the three mollymawks. BBA forage almost exclusively over the shelf and upper slope waters surrounding the Kerguelen Archipelago. By contrast, GHA and YNA feed mainly in oceanic waters, YNA favouring the warm subtropical waters, and GHA the cold Antarctic waters. It is thus remarkable that birds from the same breeding grounds forage over such a wide latitudinal range, from about 35–40S to 60–65S, encompassing the Subtropical Zone for YNA, the Antarctic Zone for GHA and the Antarctic Polar Frontal Zone (where Kerguelen is located) for the three species. Article in Journal/Newspaper Antarc* Antarctic Patagonian Toothfish Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic The Antarctic Kerguelen Iles Nuageuses ENVELOPE(68.716,68.716,-48.632,-48.632) Marine Biology 141 6 1117 1129 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society |
spellingShingle |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society Cherel, Yves Trouve, Colette Weimerskirch, Henri Dietary evidence for spatial foraging segregation in sympatric albatrosses (Diomedea spp.) rearing chicks at Iles Nuageuses, Kerguelen |
topic_facet |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society |
description |
International audience The food of three closely related and sympatric species of mollymawks (Diomedea spp.), the black-browed (BBA, D. melanophrys), grey-headed (GHA, D. chrysostoma) and yellow-nosed (YNA, D. chlororhynchos) albatrosses, was compared at Iles Nuageuses, Kerguelen, during the chick-rearing period. BBA preyed almost equally upon cephalopods (39% by fresh mass), fish (31%) and penguins (31%), while GHA fed more on squids (52%, 16% and 28%, respectively) and YNA fed more on fish and not on penguins (13%, 84% and 0%, respectively). Crustaceans were always a minor component of the diet (<3%). Patagonian toothfish was the main fish prey, and Todarodes sp. the main cephalopod prey for the community. Accumulated beaks emphasise the importance of juvenile ommastrephid squids in the diet of mollymawks, accounting for 81%, 71% and 55% of the total number of beaks in BBA, GHA and YNA samples, respectively. BBA preyed also upon a significant number of the octopod Benthoctopus thielei (12%) and of the cranchiid squid Galiteuthis glacialis (4%), while GHA fed more on G. glacialis (18%) and on the onychoteuthid Kondakovia longimana (8%). When feeding on the same prey, prey size was similar for the albatross species. Comparison of overall prey biogeography together with the presence/absence of prey species indicators of water masses indicates segregation through different foraging areas among the three mollymawks. BBA forage almost exclusively over the shelf and upper slope waters surrounding the Kerguelen Archipelago. By contrast, GHA and YNA feed mainly in oceanic waters, YNA favouring the warm subtropical waters, and GHA the cold Antarctic waters. It is thus remarkable that birds from the same breeding grounds forage over such a wide latitudinal range, from about 35–40S to 60–65S, encompassing the Subtropical Zone for YNA, the Antarctic Zone for GHA and the Antarctic Polar Frontal Zone (where Kerguelen is located) for the three species. |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Cherel, Yves Trouve, Colette Weimerskirch, Henri |
author_facet |
Cherel, Yves Trouve, Colette Weimerskirch, Henri |
author_sort |
Cherel, Yves |
title |
Dietary evidence for spatial foraging segregation in sympatric albatrosses (Diomedea spp.) rearing chicks at Iles Nuageuses, Kerguelen |
title_short |
Dietary evidence for spatial foraging segregation in sympatric albatrosses (Diomedea spp.) rearing chicks at Iles Nuageuses, Kerguelen |
title_full |
Dietary evidence for spatial foraging segregation in sympatric albatrosses (Diomedea spp.) rearing chicks at Iles Nuageuses, Kerguelen |
title_fullStr |
Dietary evidence for spatial foraging segregation in sympatric albatrosses (Diomedea spp.) rearing chicks at Iles Nuageuses, Kerguelen |
title_full_unstemmed |
Dietary evidence for spatial foraging segregation in sympatric albatrosses (Diomedea spp.) rearing chicks at Iles Nuageuses, Kerguelen |
title_sort |
dietary evidence for spatial foraging segregation in sympatric albatrosses (diomedea spp.) rearing chicks at iles nuageuses, kerguelen |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.science/hal-00192005 https://doi.org/10.1007/s00227-002-0907-5 |
long_lat |
ENVELOPE(68.716,68.716,-48.632,-48.632) |
geographic |
Antarctic The Antarctic Kerguelen Iles Nuageuses |
geographic_facet |
Antarctic The Antarctic Kerguelen Iles Nuageuses |
genre |
Antarc* Antarctic Patagonian Toothfish |
genre_facet |
Antarc* Antarctic Patagonian Toothfish |
op_source |
ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.science/hal-00192005 Marine Biology, 2002, 141, pp.1117-1129. ⟨10.1007/s00227-002-0907-5⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-002-0907-5 hal-00192005 https://hal.science/hal-00192005 doi:10.1007/s00227-002-0907-5 |
op_doi |
https://doi.org/10.1007/s00227-002-0907-5 |
container_title |
Marine Biology |
container_volume |
141 |
container_issue |
6 |
container_start_page |
1117 |
op_container_end_page |
1129 |
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1792041950733402112 |