Áreas potenciales de descarte de merluza para la actividad de la flota comercial argentina

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dc.bibliographicCitation.endpage30
dc.bibliographicCitation.stpage5
dc.bibliographicCitation.titleINIDEP Documento Científicoes
dc.bibliographicCitation.volume6
dc.contributor.authorDato, C.V.
dc.contributor.authorVillarino, M.F.
dc.contributor.authorCañete, G.R.
dc.coverage.spatialArgentina
dc.date.accessioned2014-10-07T14:46:30Z
dc.date.available2014-10-07T14:46:30Z
dc.date.issued2006
dc.description.abstractTo improve the quality of the resource assessment it is necessary to estimate discards and quantify them applying an adequate methodology. The purpose of this work is to detect areas where the activity of the commercial fleet coincides with zones of high concentration of juveniles because they are potential discard areas. To establish possible seasonal and/or interannual variations, length distribution data derived from hake research surveys carried out on board of INIDEP vessels during the 1986-1993 period were analyzed. Samples were grouped per statistical rectangle on the basis of catch weighted average and mean, variance, skewness and kurtosis were calculated. The resulting parameters were subjected to a cluster analysis using the Euclidean distance and Ward index. Besides, juveniles percentage (individuals below 35 cm total lenght) and sex proportion per statistical rectangle and season were calculated. To analyze the dynamics of the commercial fleet, catch and effort data for the same period were used. Results indicate that the areas of highest concentrations of juveniles are located north of 37° S and southwards between 43° S and 47° S, from the coast to 62° W, both at 50-150 m depth. The strong presence of the argentine commercial fleet in the southern area, intensified as of 1990, led to consider it a potential discard area. North of 37° S the fleet had scarce presence during the period analyzed. Neither area showed seasonal and/or interannual variations, so they were considered representative of the 1986-1993 period to estimate discards quantitatively.en
dc.description.notesEn: El descarte de merluza (Merluccius hubbsi) en el Mar Argentino entre 34° s y 48° s. Período 1986-1993
dc.format.extent1503659 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationINIDEP Documento Científico, 6. p. 5-30
dc.identifier.issn0327-9332
dc.identifier.urihttps://marabierto.inidep.edu.ar/handle/inidep/245
dc.identifier.urihttp://hdl.handle.net/1834/1586
dc.language.isoes
dc.publisherInstituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata
dc.rightsPublisher permission
dc.subject.asfaGadoid fisheriesen
dc.subject.asfaCommercial fishingen
dc.subject.asfaFishing groundsen
dc.subject.asfaJuvenilesen
dc.subject.asfaFishing efforten
dc.subject.asfaSeasonal variationsen
dc.subject.otherpesquería de gadidos
dc.subject.otherpesca comercial
dc.subject.otherzonas de pesca
dc.subject.otherjuveniles
dc.subject.otheresfuerzo pesquero
dc.subject.othervariaciones estacionales
dc.titleÁreas potenciales de descarte de merluza para la actividad de la flota comercial argentinaes
dc.title.alternativeHake potential discard areas of the argentine commercial fleeten
dc.typeJournal Contribution
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2006 - INIDEP Documento Científico Nro 6