INIDEP Informe Técnico, 51: 27 – 38.

INIDEP Informe Técnico, 51: 27 – 38.

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Castrucci, R., Aubone, A., Pérez, M.; Renzi, M. 2003. Índice de abundancia del grupo de merluza de edad 2 en el área de cría patagónica. Período 1995-1998. INIDEP Informe Técnico, 51: 27-38.

Abundance index of hake age 2 in the Patagonian nursing area. 1995-1998 period. An abundance index of hake individuals age 2 was estimated in the nursery area south of 41° S. The analysis comprised the 1995-1998 period and was made with data derived from research surveys programmed to that end. A mean value estimator of CPUE (catch in number of individuals per trawl hour) based on delta distribution was used. The spatial distribution of CPUE of age groups 1 and 2 in the area surveyed, total length distribution per survey and the corresponding age composition are presented. The declining trend of abundance index of hake age 2 observed during the four year period amounted to 52.9%.