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Please use this identifier to cite or link to this item: http://hdl.handle.net/1834/2028

Title: Estudios sobre reproducción y fecundidad de la polaca (Micromesistius australis Norma 1937)en el Mar Argentino
Other Titles: Studies on the reproduction and fecundity of the southern blue whiting (Micromesistius australis Norman, 1937)in the Sea of Argentina
Authors: Sánchez, R.P.
de Ciechomski, J.D.
Acha, E.M.
ASFA Terms: Reproduction
Fecundity
Sexual maturity
Stock assessment
Issue Date: 1986
Publisher: Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP)
Citation: Revista de Investigación y Desarrollo Pesquero, 6. p. 21-43
Abstract: An analysis is presented of reproduction aspects of Argentine Sea blue whiting. The species spawns in the study area mostly during August and September, although some spawners have been detected even in November. Total length at 50-per-cent maturity was 35,4 cm for the males and 38.0 for the females. Significant differences between the length of maturity for individuals of the continental shelf compared to those of the slope, have been obtained. The southern blue whiting is a discontinuous spawner, showing one annual reproduction peak. Fecundity was investigated on the basis of samples collected in 1978 by the RV"Walther Herwig" and "Shinkai Maru". A significant positive correlation was also observed at relating oocyte dry weight and gonad factor, whereas no correlation wasobserved between oocyte dry weight and condition factor, and age of the female.
URI: http://hdl.handle.net/1834/2028
ISSN: 0325-6375
Appears in Collections:1. Revista de Investigación y Desarrollo Pesquero

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