Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks
International audience : Understanding the underlying ecological factors that affect the distribution patternsof organisms is vital for their conservation. Cephalopods such as giant warty squids Moroteuthop-sis longimanaare important in the diets of marine predators, including grey-headed albatrosse...
Published in: | Marine Ecology Progress Series |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03134233 https://doi.org/10.3354/meps13556 |
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ftccsdartic:oai:HAL:hal-03134233v1 2023-05-15T13:45:04+02:00 Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks van Tonder, A Lübcker, N Guerreiro, M Xavier, J. C. Cherel, Y de Bruyn, P. J. Nico Department of Zoology and Entomology Pretoria University of Pretoria South Africa Laboratório Marítimo da Guia MARE Portugal Faculdade de Ciências da Universidade de Lisboa Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2021-01-21 https://hal.archives-ouvertes.fr/hal-03134233 https://doi.org/10.3354/meps13556 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps13556 hal-03134233 https://hal.archives-ouvertes.fr/hal-03134233 doi:10.3354/meps13556 ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.archives-ouvertes.fr/hal-03134233 Marine Ecology Progress Series, Inter Research, 2021, 658, pp.105-115. ⟨10.3354/meps13556⟩ Cephalopods Moroteuthopsis longimana Ontogeny Southern Ocean Stableisotope analysis Prince Edward Islands Thalassarche chrysostoma [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.3354/meps13556 2021-10-24T00:01:27Z International audience : Understanding the underlying ecological factors that affect the distribution patternsof organisms is vital for their conservation. Cephalopods such as giant warty squids Moroteuthop-sis longimanaare important in the diets of marine predators, including grey-headed albatrossesThalassarche chrysostoma, yet our understanding of their habitat and trophic ecology remainslimited. We investigated the habitat and trophic niche utilised by M. longimanathrough the δ13Cand δ15N profiles captured in their beaks. M. longimanabeaks were collected around grey-headed albatross nests at the Prince Edward Islands during 2004 and 2013 (n = 40 beaks). Theresults showed distinctly Antarctic distributions (δ13C = −24.0 ± 1.0 ‰, mean ± SD) for M. longi-mana, consistent with albatrosses foraging at the Southwest Indian Ridge, as opposed to broaderforaging zones utilised by albatrosses from Îles Crozet and Îles Kerguelen. Slightly lower δ15N val-ues (5.4 ± 0.7 ‰) were found compared to other islands in the Indian Sector of the Southern Ocean,which may indicate more crustaceans in the squid diets. Sequential sampling along the lateralwalls of individual beaks (n = 4) revealed ontogenetic shifts in δ13C and δ15N values, but individualvariation in these shifts requires further investigation. Article in Journal/Newspaper Antarc* Antarctic Îles Crozet Prince Edward Islands Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Îles Kerguelen ENVELOPE(69.167,69.167,-49.250,-49.250) Indian Kerguelen Southern Ocean Marine Ecology Progress Series 658 105 115 |
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 |
Cephalopods Moroteuthopsis longimana Ontogeny Southern Ocean Stableisotope analysis Prince Edward Islands Thalassarche chrysostoma [SDE]Environmental Sciences |
spellingShingle |
Cephalopods Moroteuthopsis longimana Ontogeny Southern Ocean Stableisotope analysis Prince Edward Islands Thalassarche chrysostoma [SDE]Environmental Sciences van Tonder, A Lübcker, N Guerreiro, M Xavier, J. C. Cherel, Y de Bruyn, P. J. Nico Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks |
topic_facet |
Cephalopods Moroteuthopsis longimana Ontogeny Southern Ocean Stableisotope analysis Prince Edward Islands Thalassarche chrysostoma [SDE]Environmental Sciences |
description |
International audience : Understanding the underlying ecological factors that affect the distribution patternsof organisms is vital for their conservation. Cephalopods such as giant warty squids Moroteuthop-sis longimanaare important in the diets of marine predators, including grey-headed albatrossesThalassarche chrysostoma, yet our understanding of their habitat and trophic ecology remainslimited. We investigated the habitat and trophic niche utilised by M. longimanathrough the δ13Cand δ15N profiles captured in their beaks. M. longimanabeaks were collected around grey-headed albatross nests at the Prince Edward Islands during 2004 and 2013 (n = 40 beaks). Theresults showed distinctly Antarctic distributions (δ13C = −24.0 ± 1.0 ‰, mean ± SD) for M. longi-mana, consistent with albatrosses foraging at the Southwest Indian Ridge, as opposed to broaderforaging zones utilised by albatrosses from Îles Crozet and Îles Kerguelen. Slightly lower δ15N val-ues (5.4 ± 0.7 ‰) were found compared to other islands in the Indian Sector of the Southern Ocean,which may indicate more crustaceans in the squid diets. Sequential sampling along the lateralwalls of individual beaks (n = 4) revealed ontogenetic shifts in δ13C and δ15N values, but individualvariation in these shifts requires further investigation. |
author2 |
Department of Zoology and Entomology Pretoria University of Pretoria South Africa Laboratório Marítimo da Guia MARE Portugal Faculdade de Ciências da Universidade de Lisboa Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
van Tonder, A Lübcker, N Guerreiro, M Xavier, J. C. Cherel, Y de Bruyn, P. J. Nico |
author_facet |
van Tonder, A Lübcker, N Guerreiro, M Xavier, J. C. Cherel, Y de Bruyn, P. J. Nico |
author_sort |
van Tonder, A |
title |
Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks |
title_short |
Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks |
title_full |
Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks |
title_fullStr |
Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks |
title_full_unstemmed |
Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks |
title_sort |
ecology of moroteuthopsis longimana at the sub-antarctic prince edward islands, revealed through stable isotope analysis of squid beaks |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03134233 https://doi.org/10.3354/meps13556 |
long_lat |
ENVELOPE(69.167,69.167,-49.250,-49.250) |
geographic |
Antarctic Îles Kerguelen Indian Kerguelen Southern Ocean |
geographic_facet |
Antarctic Îles Kerguelen Indian Kerguelen Southern Ocean |
genre |
Antarc* Antarctic Îles Crozet Prince Edward Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Îles Crozet Prince Edward Islands Southern Ocean |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.archives-ouvertes.fr/hal-03134233 Marine Ecology Progress Series, Inter Research, 2021, 658, pp.105-115. ⟨10.3354/meps13556⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps13556 hal-03134233 https://hal.archives-ouvertes.fr/hal-03134233 doi:10.3354/meps13556 |
op_doi |
https://doi.org/10.3354/meps13556 |
container_title |
Marine Ecology Progress Series |
container_volume |
658 |
container_start_page |
105 |
op_container_end_page |
115 |
_version_ |
1766212455474659328 |