Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic

11 pages, 10 figures, 1 table.

Detalles Bibliográficos
Autores: González, Ángel F., Trathan, P. N., Yau, C., Rodhouse, Paul G.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1997
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/25821
Acceso en línea:http://hdl.handle.net/10261/25821
Access Level:acceso abierto
Palabra clave:Martialia hyadesi
Oceanography
Ecology
Fishery biology
South Atlantic
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spelling Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South AtlanticGonzález, Ángel F.Trathan, P. N.Yau, C.Rodhouse, Paul G.Martialia hyadesiOceanographyEcologyFishery biologySouth Atlantic11 pages, 10 figures, 1 table.The seven star flying squid Martialia hyadesi is an oceanic slope ommastrephid with a circumpolar distribution associated with the Antarctic Polar Frontal Zone (APFZ) and is a minor, variable catch in the South Atlantic Illex argentinus fishery. There have been occasional unusually large catches of M. hyadesi, the latest being in 1995. Because of the importance of understanding the influence of the physical environment on fisheries for oceanic squid, and interest in developing a new fishery for M. hyadesi in the CCAMLR area, we examined specimens and data from the 1995 season and analysed 10 yr fisheries and remotely sensed oceanographic data sets from the area. The 1995 data show that M. hyadesi remains in the cool APFZ waters of the Falkland Current where it preys on oceanic fish and crustaceans and its distribution rarely extends over the Patagonian Shelf. The squid exploited by the fishery in 1995 were 6 to 12 mo old; females were immature but some males were fully mature. A remotely sensed sea surface temperature (SST) image revealed mesoscale features at the shelf break front between Patagonian Shelf water and APFZ water where the squid were caught. The appearance of M. hyadesi in the fishery over the last decade, including 1995, has been related to SST anomalies. Teleconnections probably exist between these anomalies, El Niño/Southern Oscillation (ENSO) events in the Pacific and sub-decadal oceanographic instability in the Antarctic. Squid are short-lived and populations are likely to be able to respond rapidly to environmental change. However, it is not clear at what stage in the life cycle of M. hyadesi these oceanographic events exert their effect. We propose 2 alternative, but not mutually exclusive, hypotheses. Warm events prior to the appearance of M. hyadesi may favour reproductive success of the parent generation giving rise to a strong recruitment, or alternatively this cool water species may extend its range to the edge of the Patagonian Shelf early in the development of cold oceanographic events. In either case oceanographic effects are probably mediated via the squid's prey.The research forms part of the Pelagic Ecosystems Studies programme within the Marine Life Sciences Division of the British Antarctic Survey. A.F.G. was supported by the Spanish Ministerio de Educacion y Ciencia.Peer reviewedInter ResearchBritish Antarctic SurveyMinisterio de Educación y Ciencia (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201020101997info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersion1090034 bytesapplication/pdfhttp://hdl.handle.net/10261/25821reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.3354/meps152205Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/258212026-05-22T06:33:51Z
dc.title.none.fl_str_mv Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic
title Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic
spellingShingle Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic
González, Ángel F.
Martialia hyadesi
Oceanography
Ecology
Fishery biology
South Atlantic
title_short Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic
title_full Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic
title_fullStr Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic
title_full_unstemmed Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic
title_sort Interactions between oceanography, ecology and fishery biology of the ommastrephid squid Martialia hyadesi in the South Atlantic
dc.creator.none.fl_str_mv González, Ángel F.
Trathan, P. N.
Yau, C.
Rodhouse, Paul G.
author González, Ángel F.
author_facet González, Ángel F.
Trathan, P. N.
Yau, C.
Rodhouse, Paul G.
author_role author
author2 Trathan, P. N.
Yau, C.
Rodhouse, Paul G.
author2_role author
author
author
dc.contributor.none.fl_str_mv British Antarctic Survey
Ministerio de Educación y Ciencia (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Martialia hyadesi
Oceanography
Ecology
Fishery biology
South Atlantic
topic Martialia hyadesi
Oceanography
Ecology
Fishery biology
South Atlantic
description 11 pages, 10 figures, 1 table.
publishDate 1997
dc.date.none.fl_str_mv 1997
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/25821
url http://hdl.handle.net/10261/25821
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.3354/meps152205
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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publisher.none.fl_str_mv Inter Research
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instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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