Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid.
International audience Although deep-sea cephalopods are key marine organims, their feeding ecology remains essentially unknown. Here, we report for the first time the trophic structure of an assemblage of these animals (19 species) by measuring the isotopic signature of wings of their lower beaks,...
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Online Access: | https://doi.org/10.1098/rsbl.2009.0024 https://hal.archives-ouvertes.fr/hal-00383255 |
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fttriple:oai:gotriple.eu:10670/1.s8o6ug 2023-05-15T17:34:09+02:00 Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid. Cherel, Yves Ridoux, V. Spitz, J. Richard, Patrick Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Centre de Recherche sur les Mammifères Marins (CRMM) Université de La Rochelle (ULR) 2009-03-18 https://doi.org/10.1098/rsbl.2009.0024 https://hal.archives-ouvertes.fr/hal-00383255 en eng HAL CCSD Royal Society, The hal-00383255 doi:10.1098/rsbl.2009.0024 PUBMED: 19324634 10670/1.s8o6ug https://hal.archives-ouvertes.fr/hal-00383255 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1744-9561 Biology Letters Biology Letters, Royal Society, The, 2009, 5, pp.364-367. ⟨10.1098/rsbl.2009.0024⟩ marine predator North Atlantic pelagic ecosystem sperm whale trophic level envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2009 fttriple https://doi.org/10.1098/rsbl.2009.0024 2023-01-22T17:56:37Z International audience Although deep-sea cephalopods are key marine organims, their feeding ecology remains essentially unknown. Here, we report for the first time the trophic structure of an assemblage of these animals (19 species) by measuring the isotopic signature of wings of their lower beaks, which accumulated in stomachs of stranded sperm whales. Overall, the species encompassed a narrow range in delta(13)C values (1.7 per thousand), indicating that they lived in closely related and overlapping habitats. delta(13)C values can be interpreted in terms of distribution with the more (13)C-depleted species (e.g. Stigmatoteuthis arcturi, Vampyroteuthis infernalis) having a more pelagic habitat than the more (13)C-enriched, bathyal species (e.g. Todarodes sagittatus and the giant squid Architeuthis dux). The cephalopods sampled had delta(15)N values ranging 4.6 per thousand, which is consistent with the species spanning approximately 1.5 trophic levels. Neither the giant octopod (Haliphron atlanticus) nor the giant squid reached the highest trophic position. Species delta(15)N was independent of body size, with large squids having both the highest (Taningia danae) and lowest (Lepidoteuthis grimaldii) delta(15)N values. Their trophic position indicates that some species share the top of the food web, together with other megacarnivores such as the sperm whale. Article in Journal/Newspaper North Atlantic Sperm whale Unknown Biology Letters 5 3 364 367 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
marine predator North Atlantic pelagic ecosystem sperm whale trophic level envir geo |
spellingShingle |
marine predator North Atlantic pelagic ecosystem sperm whale trophic level envir geo Cherel, Yves Ridoux, V. Spitz, J. Richard, Patrick Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid. |
topic_facet |
marine predator North Atlantic pelagic ecosystem sperm whale trophic level envir geo |
description |
International audience Although deep-sea cephalopods are key marine organims, their feeding ecology remains essentially unknown. Here, we report for the first time the trophic structure of an assemblage of these animals (19 species) by measuring the isotopic signature of wings of their lower beaks, which accumulated in stomachs of stranded sperm whales. Overall, the species encompassed a narrow range in delta(13)C values (1.7 per thousand), indicating that they lived in closely related and overlapping habitats. delta(13)C values can be interpreted in terms of distribution with the more (13)C-depleted species (e.g. Stigmatoteuthis arcturi, Vampyroteuthis infernalis) having a more pelagic habitat than the more (13)C-enriched, bathyal species (e.g. Todarodes sagittatus and the giant squid Architeuthis dux). The cephalopods sampled had delta(15)N values ranging 4.6 per thousand, which is consistent with the species spanning approximately 1.5 trophic levels. Neither the giant octopod (Haliphron atlanticus) nor the giant squid reached the highest trophic position. Species delta(15)N was independent of body size, with large squids having both the highest (Taningia danae) and lowest (Lepidoteuthis grimaldii) delta(15)N values. Their trophic position indicates that some species share the top of the food web, together with other megacarnivores such as the sperm whale. |
author2 |
Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Centre de Recherche sur les Mammifères Marins (CRMM) Université de La Rochelle (ULR) |
format |
Article in Journal/Newspaper |
author |
Cherel, Yves Ridoux, V. Spitz, J. Richard, Patrick |
author_facet |
Cherel, Yves Ridoux, V. Spitz, J. Richard, Patrick |
author_sort |
Cherel, Yves |
title |
Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid. |
title_short |
Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid. |
title_full |
Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid. |
title_fullStr |
Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid. |
title_full_unstemmed |
Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid. |
title_sort |
stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid. |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://doi.org/10.1098/rsbl.2009.0024 https://hal.archives-ouvertes.fr/hal-00383255 |
genre |
North Atlantic Sperm whale |
genre_facet |
North Atlantic Sperm whale |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 1744-9561 Biology Letters Biology Letters, Royal Society, The, 2009, 5, pp.364-367. ⟨10.1098/rsbl.2009.0024⟩ |
op_relation |
hal-00383255 doi:10.1098/rsbl.2009.0024 PUBMED: 19324634 10670/1.s8o6ug https://hal.archives-ouvertes.fr/hal-00383255 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1098/rsbl.2009.0024 |
container_title |
Biology Letters |
container_volume |
5 |
container_issue |
3 |
container_start_page |
364 |
op_container_end_page |
367 |
_version_ |
1766132896907657216 |