Revista de Investigación y Desarrollo Pesquero 1980 Nro 2

Permanent URI for this collection

https://marabierto.inidep.edu.ar/handle/inidep/122

Browse

Browsing Revista de Investigación y Desarrollo Pesquero 1980 Nro 2 by Author "Otero, H.O."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Abundancia relativa y rendimiento máximo sostenible de la merluza común (Merluccius hubbsi)
    (Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 1980) Otero, H.O.
    The statistics provided by the Argentinean Fishing Vessel and the biological data collected by scientist in the last eleven years, allow us to estimate different aspects of the population dynamics of the common hake (Merluccius hubbsi). This work deals with the relative abundance and the maximal sustainable yield of this species, considering the bonaerense stock of the Southewest Atlantic. Analyzing the effective fishing density, concluding remarks can be made. The high catches of 1967 (more than 600.000 tons.) made by the Russian Fleet, affected the fishing density in 1968. Since 1969, the resource recovered the high density level as a consequence of a decrease in the catches and in the fishing effort, but vulnerability of the stock is shown.
  • No Thumbnail Available
    Item
    Los recursos pesqueros demersales del Mar Argentino. Parte I. Evaluación de la biomasa (Standing stock) de la merluza común (Merluccius hubbsi) y de la merluza austral (Merluccius polylepis) en el área de su distribución estival
    (Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 1980) Simonazzi, M.A.; Otero, H.O.
    The present paper deals with the standing stock (Pw1) of the common hake (Merluccius hubbsi) and the austral hake (Merluccius polylepis), using the swept are method (Alverson, 1971) and with the Potential Yield (Cmax) using the Gulland (1970)method. The standing stock of the common hake was 2.642.715 tons. the highest concentrations of this specie were distributed over 12.348 nm² (13 o/o of the toal distribution area) with 1.178.843 tons. This area was located between 41° and 45° of south latitude and between the coast and 100 m of bottom depth in the Patagonian Shelf. The other 1.463.872 tons were distributed over a wide area of 82.727 nm².