Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses
The diets of marine predators are a potential source of information about range shifts in their prey. For example, the short-finned squid Illex argentinus, a commercially fished species on the Patagonian Shelf in the South Atlantic, has been reported in the diet of grey-headed, Thalassarche chrysost...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Cambridge University Press
2016
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Online Access: | http://nora.nerc.ac.uk/id/eprint/511036/ https://nora.nerc.ac.uk/id/eprint/511036/1/Hill.pdf https://nora.nerc.ac.uk/id/eprint/511036/7/Seco%20et%20al%202016%20manuscript_with_figures_Illex_Final.docx https://doi.org/10.1017/S0025315415000752 |
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ftnerc:oai:nora.nerc.ac.uk:511036 2023-05-15T13:49:32+02:00 Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses Seco, José Daneri, Gustavo A. Ceia, Filipe R. Vieira, Rui Pedro Hill, Simeon L. Xavier, Jose Carlos 2016-09 text http://nora.nerc.ac.uk/id/eprint/511036/ https://nora.nerc.ac.uk/id/eprint/511036/1/Hill.pdf https://nora.nerc.ac.uk/id/eprint/511036/7/Seco%20et%20al%202016%20manuscript_with_figures_Illex_Final.docx https://doi.org/10.1017/S0025315415000752 en eng Cambridge University Press https://nora.nerc.ac.uk/id/eprint/511036/1/Hill.pdf https://nora.nerc.ac.uk/id/eprint/511036/7/Seco%20et%20al%202016%20manuscript_with_figures_Illex_Final.docx Seco, José; Daneri, Gustavo A.; Ceia, Filipe R.; Vieira, Rui Pedro; Hill, Simeon L. orcid:0000-0003-1441-8769 Xavier, Jose Carlos orcid:0000-0002-9621-6660 . 2016 Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses. Journal of the Marine Biological Association of the United Kingdom, 96 (6). 1211-1215. https://doi.org/10.1017/S0025315415000752 <https://doi.org/10.1017/S0025315415000752> Publication - Article PeerReviewed 2016 ftnerc https://doi.org/10.1017/S0025315415000752 2023-02-04T19:41:42Z The diets of marine predators are a potential source of information about range shifts in their prey. For example, the short-finned squid Illex argentinus, a commercially fished species on the Patagonian Shelf in the South Atlantic, has been reported in the diet of grey-headed, Thalassarche chrysostoma; black-browed, T. melanophris; and wandering, Diomedea exulans, albatrosses breeding at Bird Island, South Georgia (54°S 28°W) in the Southern Ocean. Tracking data suggest that these birds may feed on I. argentinus while foraging in Southern Ocean waters during their breeding season. This led to the hypothesis that I. argentinus may occur south of the Antarctic Polar Front. To test this hypothesis, we used stable isotope analyses to assess the origin of I. argentinus. We compared I. argentinus beaks from the diets of the three albatross species with beaks of cephalopod species endemic to the Patagonian Shelf and others from the Southern Ocean. Our results show that I. argentinus from the diet of albatrosses at Bird Island have δ13C values in the range −18.77 to −15.28‰. This is consistent with δ13C values for Octopus tehuelchus, a typical species from the Patagonian Shelf. In contrast, Alluroteuthis antarcticus, a Southern Ocean squid, has typically Antarctic δ13C in the range −25.46 to −18.61‰. This suggests that I. argentinus originated from warmer waters of the Patagonian Shelf region. It is more likely that the albatross species obtained I. argentinus by foraging in the Patagonian Shelf region than that I. argentinus naturally occurs south of the Antarctic Polar Front. Article in Journal/Newspaper Antarc* Antarctic antarcticus Bird Island Diomedea exulans Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Journal of the Marine Biological Association of the United Kingdom 96 6 1211 1215 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The diets of marine predators are a potential source of information about range shifts in their prey. For example, the short-finned squid Illex argentinus, a commercially fished species on the Patagonian Shelf in the South Atlantic, has been reported in the diet of grey-headed, Thalassarche chrysostoma; black-browed, T. melanophris; and wandering, Diomedea exulans, albatrosses breeding at Bird Island, South Georgia (54°S 28°W) in the Southern Ocean. Tracking data suggest that these birds may feed on I. argentinus while foraging in Southern Ocean waters during their breeding season. This led to the hypothesis that I. argentinus may occur south of the Antarctic Polar Front. To test this hypothesis, we used stable isotope analyses to assess the origin of I. argentinus. We compared I. argentinus beaks from the diets of the three albatross species with beaks of cephalopod species endemic to the Patagonian Shelf and others from the Southern Ocean. Our results show that I. argentinus from the diet of albatrosses at Bird Island have δ13C values in the range −18.77 to −15.28‰. This is consistent with δ13C values for Octopus tehuelchus, a typical species from the Patagonian Shelf. In contrast, Alluroteuthis antarcticus, a Southern Ocean squid, has typically Antarctic δ13C in the range −25.46 to −18.61‰. This suggests that I. argentinus originated from warmer waters of the Patagonian Shelf region. It is more likely that the albatross species obtained I. argentinus by foraging in the Patagonian Shelf region than that I. argentinus naturally occurs south of the Antarctic Polar Front. |
format |
Article in Journal/Newspaper |
author |
Seco, José Daneri, Gustavo A. Ceia, Filipe R. Vieira, Rui Pedro Hill, Simeon L. Xavier, Jose Carlos |
spellingShingle |
Seco, José Daneri, Gustavo A. Ceia, Filipe R. Vieira, Rui Pedro Hill, Simeon L. Xavier, Jose Carlos Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses |
author_facet |
Seco, José Daneri, Gustavo A. Ceia, Filipe R. Vieira, Rui Pedro Hill, Simeon L. Xavier, Jose Carlos |
author_sort |
Seco, José |
title |
Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses |
title_short |
Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses |
title_full |
Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses |
title_fullStr |
Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses |
title_full_unstemmed |
Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses |
title_sort |
distribution of short-finned squid illex argentinus (cephalopoda: ommastrephidae) inferred from the diets of southern ocean albatrosses using stable isotope analyses |
publisher |
Cambridge University Press |
publishDate |
2016 |
url |
http://nora.nerc.ac.uk/id/eprint/511036/ https://nora.nerc.ac.uk/id/eprint/511036/1/Hill.pdf https://nora.nerc.ac.uk/id/eprint/511036/7/Seco%20et%20al%202016%20manuscript_with_figures_Illex_Final.docx https://doi.org/10.1017/S0025315415000752 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Antarctic Southern Ocean The Antarctic Bird Island |
geographic_facet |
Antarctic Southern Ocean The Antarctic Bird Island |
genre |
Antarc* Antarctic antarcticus Bird Island Diomedea exulans Southern Ocean |
genre_facet |
Antarc* Antarctic antarcticus Bird Island Diomedea exulans Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/511036/1/Hill.pdf https://nora.nerc.ac.uk/id/eprint/511036/7/Seco%20et%20al%202016%20manuscript_with_figures_Illex_Final.docx Seco, José; Daneri, Gustavo A.; Ceia, Filipe R.; Vieira, Rui Pedro; Hill, Simeon L. orcid:0000-0003-1441-8769 Xavier, Jose Carlos orcid:0000-0002-9621-6660 . 2016 Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses. Journal of the Marine Biological Association of the United Kingdom, 96 (6). 1211-1215. https://doi.org/10.1017/S0025315415000752 <https://doi.org/10.1017/S0025315415000752> |
op_doi |
https://doi.org/10.1017/S0025315415000752 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
96 |
container_issue |
6 |
container_start_page |
1211 |
op_container_end_page |
1215 |
_version_ |
1766251497577775104 |