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://hal.science/hal-00383255 https://doi.org/10.1098/rsbl.2009.0024 |
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ftunivnantes:oai:HAL:hal-00383255v1 2023-05-15T17:34:22+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 (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Centre de Recherche sur les Mammifères Marins (CRMM) La Rochelle Université (ULR) 2009-03-18 https://hal.science/hal-00383255 https://doi.org/10.1098/rsbl.2009.0024 en eng HAL CCSD Royal Society, The info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2009.0024 info:eu-repo/semantics/altIdentifier/pmid/19324634 hal-00383255 https://hal.science/hal-00383255 doi:10.1098/rsbl.2009.0024 PUBMED: 19324634 PUBMEDCENTRAL: PMC2679927 ISSN: 1744-9561 Biology Letters https://hal.science/hal-00383255 Biology Letters, 2009, 5, pp.364-367. ⟨10.1098/rsbl.2009.0024⟩ marine predator North Atlantic pelagic ecosystem sperm whale trophic level [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2009 ftunivnantes https://doi.org/10.1098/rsbl.2009.0024 2023-03-08T01:16:26Z 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 Université de Nantes: HAL-UNIV-NANTES Biology Letters 5 3 364 367 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
marine predator North Atlantic pelagic ecosystem sperm whale trophic level [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
marine predator North Atlantic pelagic ecosystem sperm whale trophic level [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes 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 [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environmental and Society [SDE.MCG]Environmental Sciences/Global Changes |
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 (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Centre de Recherche sur les Mammifères Marins (CRMM) La Rochelle Université (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://hal.science/hal-00383255 https://doi.org/10.1098/rsbl.2009.0024 |
genre |
North Atlantic Sperm whale |
genre_facet |
North Atlantic Sperm whale |
op_source |
ISSN: 1744-9561 Biology Letters https://hal.science/hal-00383255 Biology Letters, 2009, 5, pp.364-367. ⟨10.1098/rsbl.2009.0024⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2009.0024 info:eu-repo/semantics/altIdentifier/pmid/19324634 hal-00383255 https://hal.science/hal-00383255 doi:10.1098/rsbl.2009.0024 PUBMED: 19324634 PUBMEDCENTRAL: PMC2679927 |
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_ |
1766133162393468928 |