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Reproductive biology of pollack (Pollachius pollachius) from the Galician shelf (north-west Spain)
Published online by Cambridge University Press: 10 April 2013
Abstract
The pollack, Pollachius pollachius, is an important commercial species for the Spanish artisanal fleet in Atlantic Iberian waters. This study provides information on the reproductive biology of the species, including length at maturity, reproductive cycle and gamete development pattern based on histological methods. A collection of 622 individuals were sampled from fish markets along the western coast of Galicia (NW Spain), between November 2009 and October 2010. Histological examination of the gonads revealed an asynchronous development of secondary growth follicles. Testicular tissue was of lobular type. The reproductive season extended from January to April for females and from January to May for males, with a peak of reproductive activity in February for both sexes. The hepatosomatic index was related to the reproductive cycle, with a mean maximum value during the developing reproductive phase. Length at 50% maturity was significantly different between females (47.1 cm) and males (36.1 cm).
Keywords
- Type
- Research Article
- Information
- Journal of the Marine Biological Association of the United Kingdom , Volume 93 , Issue 7 , November 2013 , pp. 1951 - 1963
- Copyright
- Copyright © Marine Biological Association of the United Kingdom 2013
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