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Experiencias de selectividad de merluza (Merluccius hubbsi) con el sector pesquero argentino

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Author
Garcia, J.C.
Roth, R.R.
Date
2014

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Alternative Title
Selectivity experience of hake (Merluccius hubbsi) with the Argentine fishing sector
Abstract
According to the recommendations made by the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP, Argentina) in 2010, the Federal Fishing Council (CFP) concludes that to maintain the current level of catches in the mid term it is necessary to use selective mechanisms that allow to separate sizes of catches, so that ages 1 and 2, under 35 cm length, achieve the highest possible escape rate (CFP Res. Nro. 08/2010). The CFP states, besides, that it is advisable to count on the consensus of the industry and continue the search for new options of selectivity systems as alternatives to the DEJUPA considered viable by the INIDEP. To determine size selectivity it is essential to consider the species length at first catch. The Resource Assessment Group on Hake of INIDEP, that estimated size at first maturity at a mean value of 35 cm, considers as juvenile specimens below that size and recommends that said value coincides with the size at first catch. Accordingly, the selectivity research for the resource is aimed at obtaining selective tools that allow to generate a size at first catch or retention size at 50 percent of L50 = 35 cm. In this paper details are given about the results obtained with the selective fishing devices presented by the argentine fishing industry that the Fishing Gear Group of INIDEP evaluated on board of vessels of different companies. Estimates of the retention curves and selectivity parameters corresponding to each device are presented.
De acuerdo con las recomendaciones hechas por el Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP, Argentina) en 2010, el Consejo Federal Pesquero (CFP) concluye que para mantener el nivel actual de capturas a mediano plazo se deben utilizar mecanismos selectivos que permitan separar las tallas de captura de forma tal que las edades 1 y 2, inferiores a 35 cm de longitud, alcancen la mayor tasa de escape posible (Resolución CFP Nro.08/2010). El CFP manifiesta, además, que es conveniente contar con el consenso del sector y continuar con la búsqueda de nuevas opciones de sistemas de selectividad como alternativas al DEJUPA que el INIDEP considere viables. Para determinar la selectividad por tamaño es de fundamental importancia tener en cuenta la longitud de primera captura de la especie. El Grupo de Evaluación del Recurso Merluza del INIDEP, que estimó la talla de primera madurez en un valor medio de 35 cm, considera juveniles a los peces de talla inferior y recomienda que ese valor coincida con la talla de primera captura. En consecuencia, las investigaciones de selectividad para el recurso se orientan a obtener herramientas selectivas que permitan generar una talla de primera captura o talla de retención al 50 por ciento de L50 = 35 cm. En el presente trabajo se detallan los resultados logrados con los dispositivos selectivos presentados por el sector pesquero argentino que el Grupo de Artes de Pesca del INIDEP evaluó a bordo de buques de distintas empresas. Se presentan las estimaciones de las curvas de retención y los parámetros de selectividad correspondientes a cada dispositivo.
Journal
Revista de Investigación y Desarrollo Pesquero
Volume
25
Page Range
pp. 97-104
URI
http://hdl.handle.net/1834/7835
Collections
Revista de Investigación y Desarrollo Pesquero

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