Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina

Autores
Elias, Ines; Rodriguez, A; Hasan, E.; Reyna, M. V.; Amoroso, Ricardo Oscar
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
During 1994–96, an experimental longline fishery for tope shark (Galeorhinus galeus) was carried out in the Nuevo Gulf of northern Patagonia and, in the summers of 2000–2001 and 2002, three boats conducted an exploratory commercial fishery for this species, accompanied by a scientific monitoring program. This paper summarizes the results of these fishing trials, and provides information on the biology of tope shark. Catches were highest from February to April, when tope shark represented 36% of the total fish caught, and elephant fish (Callorhynchus callorhynchus) and argentine hake (Merluccius hubbsi) accounted for 33% and 23%, respectively. Tope shark arriving in northern Patagonian waters during the summer are primarily mature males, immature and maturing females in their first and second non-gravid year. No gravid females were caught. These fish are part of the South-western Atlantic stock, which shows signs of over-exploitation, so we suggest that any longline fishery in Patagonia should remain on a small scale. We also recommend that an effective management plan is needed for the whole tope stock, establishing agreements on effort control and co-ordinated research between Brazil, Uruguay and Argentina.
Fil: Elias, Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Rodriguez, A. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Hasan, E.. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Reyna, M. V.. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Amoroso, Ricardo Oscar. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Materia
TOPE SHARK
LONGLINES
ARTISANAL FLEET
PATAGONIA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/104051
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/104051
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of ArgentinaElias, InesRodriguez, AHasan, E.Reyna, M. V.Amoroso, Ricardo OscarTOPE SHARKLONGLINESARTISANAL FLEETPATAGONIAhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1During 1994–96, an experimental longline fishery for tope shark (Galeorhinus galeus) was carried out in the Nuevo Gulf of northern Patagonia and, in the summers of 2000–2001 and 2002, three boats conducted an exploratory commercial fishery for this species, accompanied by a scientific monitoring program. This paper summarizes the results of these fishing trials, and provides information on the biology of tope shark. Catches were highest from February to April, when tope shark represented 36% of the total fish caught, and elephant fish (Callorhynchus callorhynchus) and argentine hake (Merluccius hubbsi) accounted for 33% and 23%, respectively. Tope shark arriving in northern Patagonian waters during the summer are primarily mature males, immature and maturing females in their first and second non-gravid year. No gravid females were caught. These fish are part of the South-western Atlantic stock, which shows signs of over-exploitation, so we suggest that any longline fishery in Patagonia should remain on a small scale. We also recommend that an effective management plan is needed for the whole tope stock, establishing agreements on effort control and co-ordinated research between Brazil, Uruguay and Argentina.Fil: Elias, Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Rodriguez, A. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Hasan, E.. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Reyna, M. V.. Universidad Nacional de la Patagonia "San Juan Bosco"; ArgentinaFil: Amoroso, Ricardo Oscar. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaNorthwest Atlantic Fishery Organization2004-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfimage/jpegapplication/pdfhttp://hdl.handle.net/11336/104051Elias, Ines; Rodriguez, A; Hasan, E.; Reyna, M. V.; Amoroso, Ricardo Oscar; Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina; Northwest Atlantic Fishery Organization; Journal of Northwest Atlantic Fishery Science; 35; 12-2004; 261-2650250-64081813-1859CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.2960/J.v35.m487info:eu-repo/semantics/altIdentifier/url/https://journal.nafo.int/Portals/0/2005/11-elias.pdfinfo:eu-repo/semantics/altIdentifier/url/https://journal.nafo.int/Volumes/Articles/articleType/CategoryView/categoryId/47/Volume-35--2005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:19:52Zoai:ri.conicet.gov.ar:11336/104051instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:19:52.516CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina
title Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina
spellingShingle Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina
Elias, Ines
TOPE SHARK
LONGLINES
ARTISANAL FLEET
PATAGONIA
title_short Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina
title_full Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina
title_fullStr Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina
title_full_unstemmed Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina
title_sort Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina
dc.creator.none.fl_str_mv Elias, Ines
Rodriguez, A
Hasan, E.
Reyna, M. V.
Amoroso, Ricardo Oscar
author Elias, Ines
author_facet Elias, Ines
Rodriguez, A
Hasan, E.
Reyna, M. V.
Amoroso, Ricardo Oscar
author_role author
author2 Rodriguez, A
Hasan, E.
Reyna, M. V.
Amoroso, Ricardo Oscar
author2_role author
author
author
author
dc.subject.none.fl_str_mv TOPE SHARK
LONGLINES
ARTISANAL FLEET
PATAGONIA
topic TOPE SHARK
LONGLINES
ARTISANAL FLEET
PATAGONIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv During 1994–96, an experimental longline fishery for tope shark (Galeorhinus galeus) was carried out in the Nuevo Gulf of northern Patagonia and, in the summers of 2000–2001 and 2002, three boats conducted an exploratory commercial fishery for this species, accompanied by a scientific monitoring program. This paper summarizes the results of these fishing trials, and provides information on the biology of tope shark. Catches were highest from February to April, when tope shark represented 36% of the total fish caught, and elephant fish (Callorhynchus callorhynchus) and argentine hake (Merluccius hubbsi) accounted for 33% and 23%, respectively. Tope shark arriving in northern Patagonian waters during the summer are primarily mature males, immature and maturing females in their first and second non-gravid year. No gravid females were caught. These fish are part of the South-western Atlantic stock, which shows signs of over-exploitation, so we suggest that any longline fishery in Patagonia should remain on a small scale. We also recommend that an effective management plan is needed for the whole tope stock, establishing agreements on effort control and co-ordinated research between Brazil, Uruguay and Argentina.
Fil: Elias, Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Rodriguez, A. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Hasan, E.. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Reyna, M. V.. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
Fil: Amoroso, Ricardo Oscar. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
description During 1994–96, an experimental longline fishery for tope shark (Galeorhinus galeus) was carried out in the Nuevo Gulf of northern Patagonia and, in the summers of 2000–2001 and 2002, three boats conducted an exploratory commercial fishery for this species, accompanied by a scientific monitoring program. This paper summarizes the results of these fishing trials, and provides information on the biology of tope shark. Catches were highest from February to April, when tope shark represented 36% of the total fish caught, and elephant fish (Callorhynchus callorhynchus) and argentine hake (Merluccius hubbsi) accounted for 33% and 23%, respectively. Tope shark arriving in northern Patagonian waters during the summer are primarily mature males, immature and maturing females in their first and second non-gravid year. No gravid females were caught. These fish are part of the South-western Atlantic stock, which shows signs of over-exploitation, so we suggest that any longline fishery in Patagonia should remain on a small scale. We also recommend that an effective management plan is needed for the whole tope stock, establishing agreements on effort control and co-ordinated research between Brazil, Uruguay and Argentina.
publishDate 2004
dc.date.none.fl_str_mv 2004-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/104051
Elias, Ines; Rodriguez, A; Hasan, E.; Reyna, M. V.; Amoroso, Ricardo Oscar; Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina; Northwest Atlantic Fishery Organization; Journal of Northwest Atlantic Fishery Science; 35; 12-2004; 261-265
0250-6408
1813-1859
CONICET Digital
CONICET
url http://hdl.handle.net/11336/104051
identifier_str_mv Elias, Ines; Rodriguez, A; Hasan, E.; Reyna, M. V.; Amoroso, Ricardo Oscar; Biological observations of the tope shark, Galeorhinus galeus , in the northern Patagonian gulfs of Argentina; Northwest Atlantic Fishery Organization; Journal of Northwest Atlantic Fishery Science; 35; 12-2004; 261-265
0250-6408
1813-1859
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.2960/J.v35.m487
info:eu-repo/semantics/altIdentifier/url/https://journal.nafo.int/Portals/0/2005/11-elias.pdf
info:eu-repo/semantics/altIdentifier/url/https://journal.nafo.int/Volumes/Articles/articleType/CategoryView/categoryId/47/Volume-35--2005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
image/jpeg
application/pdf
dc.publisher.none.fl_str_mv Northwest Atlantic Fishery Organization
publisher.none.fl_str_mv Northwest Atlantic Fishery Organization
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842981086873780224
score 12.48226

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