Cephalopod fauna of subantarctic islands: new information from predators
14 pages International audience Using top predators as biological samplers, we collected information on the poorly known—but ecologically important—cephalopod fauna of the Southern Ocean. A total of 4527 cephalopod beaks were identified from stomach contents of Patagonian toothfish caught in slope w...
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ftmuseumnhn:oai:HAL:hal-00186837v1 2024-02-11T09:56:58+01:00 Cephalopod fauna of subantarctic islands: new information from predators Cherel, Yves Duhamel, Guy Gasco, Nicolas Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Département Milieux et Peuplements Aquatiques Muséum national d'Histoire naturelle (MNHN) 2004-01 https://hal.science/hal-00186837 https://doi.org/10.3354/meps266143 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps266143 hal-00186837 https://hal.science/hal-00186837 doi:10.3354/meps266143 ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-00186837 Marine Ecology Progress Series, 2004, 266, pp.143-156. ⟨10.3354/meps266143⟩ Crozet Kerguelen Octopus Patagonian toothfish Slope Southern Ocean Squid [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2004 ftmuseumnhn https://doi.org/10.3354/meps266143 2024-01-24T17:32:36Z 14 pages International audience Using top predators as biological samplers, we collected information on the poorly known—but ecologically important—cephalopod fauna of the Southern Ocean. A total of 4527 cephalopod beaks were identified from stomach contents of Patagonian toothfish caught in slope waters at Crozet and Kerguelen Islands (Indian Ocean). Main prey were the squid Gonatus antarcticus and Kondakovia longimana at both localities, Taonius sp. B (Voss) and Slosarczykovia circumantarctica at Crozet, and Chiroteuthis veranyi and Mastigoteuthis psychrophila at Kerguelen. Fish diet together with the feeding habits of sharks and seabirds show that at least 36 and 38 different cephalopod species inhabit Crozet and Kerguelen waters, respectively. Oegopsid squid dominate the assemblages (29 and 32 taxa at Crozet and Kerguelen, respectively) over octopods (7 and 5 taxa), 1 species of sepiolid occurring at Kerguelen. These rich communities include pelagic squid, benthopelagic cirrate octopods and a few endemic benthic octopodids. The results emphasize the importance of onychoteuthids and gonatids in the nutrition of top consumers in the Southern Ocean and they shed new light on the role of chiroteuthids, mastigoteuthids and cirrate octopods in the trophic web of the marine ecosystems. Article in Journal/Newspaper Antarc* antarcticus Kerguelen Islands Patagonian Toothfish Southern Ocean Muséum National d'Histoire Naturelle (MNHM): HAL Indian Kerguelen Kerguelen Islands Southern Ocean Marine Ecology Progress Series 266 143 156 |
institution |
Open Polar |
collection |
Muséum National d'Histoire Naturelle (MNHM): HAL |
op_collection_id |
ftmuseumnhn |
language |
English |
topic |
Crozet Kerguelen Octopus Patagonian toothfish Slope Southern Ocean Squid [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Crozet Kerguelen Octopus Patagonian toothfish Slope Southern Ocean Squid [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes Cherel, Yves Duhamel, Guy Gasco, Nicolas Cephalopod fauna of subantarctic islands: new information from predators |
topic_facet |
Crozet Kerguelen Octopus Patagonian toothfish Slope Southern Ocean Squid [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society [SDE.MCG]Environmental Sciences/Global Changes |
description |
14 pages International audience Using top predators as biological samplers, we collected information on the poorly known—but ecologically important—cephalopod fauna of the Southern Ocean. A total of 4527 cephalopod beaks were identified from stomach contents of Patagonian toothfish caught in slope waters at Crozet and Kerguelen Islands (Indian Ocean). Main prey were the squid Gonatus antarcticus and Kondakovia longimana at both localities, Taonius sp. B (Voss) and Slosarczykovia circumantarctica at Crozet, and Chiroteuthis veranyi and Mastigoteuthis psychrophila at Kerguelen. Fish diet together with the feeding habits of sharks and seabirds show that at least 36 and 38 different cephalopod species inhabit Crozet and Kerguelen waters, respectively. Oegopsid squid dominate the assemblages (29 and 32 taxa at Crozet and Kerguelen, respectively) over octopods (7 and 5 taxa), 1 species of sepiolid occurring at Kerguelen. These rich communities include pelagic squid, benthopelagic cirrate octopods and a few endemic benthic octopodids. The results emphasize the importance of onychoteuthids and gonatids in the nutrition of top consumers in the Southern Ocean and they shed new light on the role of chiroteuthids, mastigoteuthids and cirrate octopods in the trophic web of the marine ecosystems. |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Département Milieux et Peuplements Aquatiques Muséum national d'Histoire naturelle (MNHN) |
format |
Article in Journal/Newspaper |
author |
Cherel, Yves Duhamel, Guy Gasco, Nicolas |
author_facet |
Cherel, Yves Duhamel, Guy Gasco, Nicolas |
author_sort |
Cherel, Yves |
title |
Cephalopod fauna of subantarctic islands: new information from predators |
title_short |
Cephalopod fauna of subantarctic islands: new information from predators |
title_full |
Cephalopod fauna of subantarctic islands: new information from predators |
title_fullStr |
Cephalopod fauna of subantarctic islands: new information from predators |
title_full_unstemmed |
Cephalopod fauna of subantarctic islands: new information from predators |
title_sort |
cephalopod fauna of subantarctic islands: new information from predators |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-00186837 https://doi.org/10.3354/meps266143 |
geographic |
Indian Kerguelen Kerguelen Islands Southern Ocean |
geographic_facet |
Indian Kerguelen Kerguelen Islands Southern Ocean |
genre |
Antarc* antarcticus Kerguelen Islands Patagonian Toothfish Southern Ocean |
genre_facet |
Antarc* antarcticus Kerguelen Islands Patagonian Toothfish Southern Ocean |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-00186837 Marine Ecology Progress Series, 2004, 266, pp.143-156. ⟨10.3354/meps266143⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps266143 hal-00186837 https://hal.science/hal-00186837 doi:10.3354/meps266143 |
op_doi |
https://doi.org/10.3354/meps266143 |
container_title |
Marine Ecology Progress Series |
container_volume |
266 |
container_start_page |
143 |
op_container_end_page |
156 |
_version_ |
1790607413740568576 |