Publication Date:
2021-05-19
Description:
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.
Description:
Published
Keywords:
Evaluación de efectivos
;
Biomasa
;
Abundancia
;
Composición por edad
;
Captura incidental
;
Condiciones ambientales
;
Gadiformes
;
Merlucciidae
;
Merluccius hubbsi
;
Merluza
;
ASFA15::S::Stock assessment
;
ASFA15::B::Biomass
;
ASFA15::A::Abundance
;
ASFA15::A::Age composition
;
ASFA15::B::By catch
;
ASFA15::E::Environmental conditions
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp.21-68
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