Estructura y abundancia del stock reproductor del abadejo (Genypterus blacodes) del Mar Argentino en el período 1995-2000

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dc.bibliographicCitation.endpage17
dc.bibliographicCitation.stpage1
dc.bibliographicCitation.titleINIDEP informe técnicoes
dc.bibliographicCitation.volume60
dc.contributor.authorCordo, H.D.
dc.coverage.spatialArgentina, Patagonia, Chubut, Golfo San Jorge
dc.date.accessioned2014-09-30T15:34:15Z
dc.date.available2014-09-30T15:34:15Z
dc.date.issued2006
dc.description.abstractThe structure and abundance of Ling spawning stock were analized from basic biological and oceanographic data recorded during research surveys carried out by INIDEP between 1995 and 2000, to assess the juveniles fraction of common hake stock (January) and of Argentine patagonian squid (February). Jointly both surveys covered the main spawning area of Ling between 44º S and 48º S and approximately between the mouth of San Jorge Gulf (60º W) and 200 m isobath (65º 30’ W) during the summer season (mid-December to mid-March). Size structures and maturity stages confirmed the presence of a spawning unit in the area covered by the surveys. This enabled the estimate of an annual index of Ling spawning stock abundance. Abundance shows a decreasing trend since 1995, even when it seems to stop during 2000. Nevertheless, abundance estimates during 2000 represent 58% of the corresponding figure for 1995. This represents a significant decrease in the reproductive stock over a relatively short period of time. A possible solution to put an end to the decreasing trend would be to establish a fishing ban area, complementary to that created to protect hake juveniles, extended only during Ling reproductive season, namely every year between December 15 and March 15.en
dc.description.statusPublisheden
dc.format.extent1145188 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationINIDEP informe técnico, 60. p. 1-17
dc.identifier.issn0327-9642
dc.identifier.urihttps://marabierto.inidep.edu.ar/handle/inidep/171
dc.language.isoes
dc.publisherMar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
dc.rightsPublisher permission
dc.subject.agrovocPopulation structureen
dc.subject.agrovocSpawning groundsen
dc.subject.asfaSpawning groundsen
dc.subject.asfaFishery surveysen
dc.subject.asfaPopulation structureen
dc.subject.asfaGadoid fisheriesen
dc.titleEstructura y abundancia del stock reproductor del abadejo (Genypterus blacodes) del Mar Argentino en el período 1995-2000es
dc.title.alternativeStructure and abundance of Ling spawning stock (Genypterus blacodes) in Argentine waters during the period 1995-2000en
dc.typeJournal Contribution
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INIDEP Informe Técnico Nro 60 (2006)