Los efectos de submuestreo y variación entre lances en la estimación de la selectividad a la talla de la merluza común (Merluccius gayi gayi)

Dante Queirolo, Mauricio Ahumada, Carlos F. Hurtado, Milagrosa C. Soriguer, Karim Erzini

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

3 Citas (Scopus)

Resumen

Using the data collected in a size selectivity experiment on Chilean hake (Merluccius gayi gayi) carried out in 2000, the selectivity parameters for four codend mesh sizes (100, 110, 130, and 140 mm of mesh size opening) were estimated and modelled by the SELECT model. These analyses included considerations of the sampling proportions of the catch in the codend and cover. Furthermore, the analyses took into account between-haul variation. The l50 values were 30.8, 29.9, 30.0, and 41.2 cm of total length, respectively, values lower than the estimates obtained from previous studies. The contribution of explanatory variables to the selectivity model was also tested in order to determine the role of mesh size, catch size (in number), and towing speed. Increases in catch size and in towing speed were accompanied by decreases in the l50 estimates. These results demonstrate how incorporation of subsampling effect and explanatory variables to model between-haul variation can improve selectivity estimates and management of a valuable resource.

Título traducido de la contribuciónThe effects of subsampling and between-haul variation on the size-selectivity estimation of Chilean hake (Merluccius gayi gayi)
Idioma originalEspañol
Páginas (desde-hasta)345-357
Número de páginas13
PublicaciónLatin American Journal of Aquatic Research
Volumen40
N.º2
DOI
EstadoPublicada - jun. 2012
Publicado de forma externa

Palabras clave

  • Between-haul variation
  • Chile
  • Merluccius gayi gayi
  • Mesh size
  • Size selectivity
  • Subsampling effect

Huella

Profundice en los temas de investigación de 'Los efectos de submuestreo y variación entre lances en la estimación de la selectividad a la talla de la merluza común (Merluccius gayi gayi)'. En conjunto forman una huella única.

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