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dc.contributor.author
Seco, José
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Daneri, Gustavo Adolfo
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Ceia, Felipe R.
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Vieira, Rui Pedro
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Hill, Simeon l.
dc.contributor.author
Xavier, José Carlos
dc.date.available
2018-06-01T15:27:04Z
dc.date.issued
2015-06
dc.identifier.citation
Seco, José; Daneri, Gustavo Adolfo; Ceia, Felipe R.; Vieira, Rui Pedro; Hill, Simeon l.; et al.; Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 96; 6; 6-2015; 1211-1215
dc.identifier.issn
0025-3154
dc.identifier.uri
http://hdl.handle.net/11336/46974
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cambridge University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cephalopods
dc.subject
Albatrosses
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Illex
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Southern Ocean
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Trophic Interactions
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Thalassarche Chrisostomo
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Thalassarche Melanophris
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Diomeda Exulans
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Patagonian Shelf
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Bird Island
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Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Distribution of short-finned squid Illex argentinus (Cephalopoda: Ommastrephidae) inferred from the diets of Southern Ocean albatrosses using stable isotope analyses
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-05-30T18:21:02Z
dc.identifier.eissn
1469-7769
dc.journal.volume
96
dc.journal.number
6
dc.journal.pagination
1211-1215
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Seco, José. Universidad de Coimbra; Portugal
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Fil: Daneri, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina
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Fil: Ceia, Felipe R.. Universidad de Coimbra; Portugal
dc.description.fil
Fil: Vieira, Rui Pedro. Universidad de Coimbra; Portugal. Universidade de Aveiro; Portugal. University of Southampton; Reino Unido
dc.description.fil
Fil: Hill, Simeon l.. Natural Environment Research Council. British Antarctic Survey; Reino Unido
dc.description.fil
Fil: Xavier, José Carlos. Universidad de Coimbra; Portugal. Natural Environment Research Council. British Antarctic Survey; Reino Unido
dc.journal.title
Journal of the Marine Biological Association of the United Kingdom
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/distribution-of-shortfinned-squid-illex-argentinus-cephalopoda-ommastrephidae-inferred-from-the-diets-of-southern-ocean-albatrosses-using-stable-isotope-analyses/3B894E8D6C9DBF095B3D0F7763EC6309
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://doi.org/10.1017/S0025315415000752
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