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Please use this identifier to cite or link to this item: http://hdl.handle.net/1834/1962

Title: Estimación preliminar de la mortalidad natural de la merluza de cola (Macruronus magellanicus) en la plataforma sur-patagónica (Argentina)
Other Titles: Preliminary estimation of natural mortality of long-tail hake (Macruronus magellanicus) in southern Patagonian shelf waters (Argentina)
Authors: Ehrhardt, N.M.
Prenski, L.B.
ASFA Terms: Demersal fisheries
Mortality
Abundance
Issue Date: 1996
Publisher: Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
Citation: Revista de Investigación y Desarrollo Pesquero, 10. p. 23-29
Abstract: Long-tail hake, Macruronus magellanicus, is an important species in the Argentinean southern demersal species complex. Significant development of these fisheries since 1987 is indicative of the need to assess the hoki resource and for this purpose knowledge about some of the fundamental population parameters, such as natural mortality rate, is required. Knowledge on the natural mortality rate is an important element for the quantification of the resilience of the stock to fishery exploitatuib. In this study an algorithm for estimating natural mortality of hoki is developed which is based on information on abundance at age obtained from area swept methods and from age composition in the landings. As a result, natural mortality rates for ages 5 to 9 ranged from 0.36 to 0.45. A weighted average natural mortality rate for the stock is 0.38.
URI: http://hdl.handle.net/1834/1962
ISSN: 0325-6375
Appears in Collections:1. Revista de Investigación y Desarrollo Pesquero

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