INIDEP Inf. Téc. 7: 21-68, 1996

INIDEP Inf. Téc. 7: 21-68, 1996

Evaluación de merluza (Merluccius hubbsi) en la plataforma Argentina, entre 34°S y 48°S, en agosto y setiembre de 1993.

Autores: Gabriel A. Bambill, Marcelo Pérez, Marta A. Renzi, Claudia V. Dato, Otto C. Wöhler, Guillermo R. Cañete y Susana I. Bezzi.
Contribución INIDEP 955


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Citar como:
Bambill, G.A.; Pérez, M.; Renzi, M.A.; Dato, C.V.; Wöhler, O.C.; Cañete, G.R.; Bezzi, S.I. 1996. Evaluación de merluza (Merluccius hubbsi) en la plataforma Argentina, entre 34°S y 48°S, en agosto y setiembre de 1993. INIDEP Informe Técnico 7, 21-68. Disponible en: http://hdl.handle.net/1834/7037.

Summary

Stock assessment of hake (Merluccius hubbsi) in the argentine shelf, between 34°S and 48°S, in August and September 1993. This report countains the results of a hake assessment survey carried out by the R/Vs “Dr. E.L.Holmberg” and “Cap. Oca Balda” in the Argentine Sea between 34°S and 48°S, from August 27 to September 30, 1993. The objectives of this survey were: 1) to estimate the total biomass, total and age abundance; 2) to define the size and age composition; and 3) to define the size composition of the by-catch. Hake biomass was estimated in 1,989,000 Tonnes, with a confidence interval of ±18 o/o and a confidence coefficient of 95 o/o. Most of the biomass corresponded to the area between 41°S and 48°S. It was estimated in 1,836,000 Tonnes and it represented the 92 o/o of total biomass. The biomass of the area between 34°S and 41°S only reached 153.000 Tonnes (8 o/o). Biomass percentage of the “Argentine – Uruguayan Fishing Common Zone” was of 3,5 o/o (71,000 Tonnes). Highest concentrations were found between 41°S and 48°S. The average densities were 2,7 Tonnes/nm² and 18,8 Tonnes/nm² for the 34°S -41°S areas, respectively.