The study of reproduction biology of gilthed seabream (Sparus aurata L.) in the Syrian Coast


Abstract in English

This study has been done on Sparus aurata (Sparidae). Fish samples (297 individuals) were collected along the Syrian Coast from March 2012 to February 2014. Total length (T) was 15 - 31 cm, and the total weight (W) was 53,1 - 410,34 g. The study of gonado somatic index (GSI) showed that the reproduction period was between November and February with a maturity peak in January (3.98±0.97)% for females ,and in December (2.19±0.29)% for males. In addition, the length at the first sexual maturity was (21.5 cm) and (22.5 cm) for males and females respectively. The results of the hepato somatic index (HSI) was compatible with the surrounding environmental and physiological changes which resulted from the change of sexual activity during the reproductive cycle. Fecundity showed a wide range for a given length, there was a linear relationship between the absolute fecundity and each of length groups and total weight. Relative fecundity was (567896-849362) egg per 1kg body weight. The frequency distribution of eggs diameters revealed the presence of one peak, and the eggs diameter during the reproduction period ranged from 0.05 to 0.3mm.

References used

AHMED,M.S. Population dynamics and fisheries management of Gilthead sea bream, Sparus aurata (f.sparidae) from Baradawil lagoon, North Sinai,Egypt. Egept J. Aquat.Biol.&fish.15,2011,57-69
Al-ABSAWY,M.A.The reproductive biology and the histological and ultrastructural characteristics in ovaries of the female Gadidae fish Merluccius merluccius from the Egyptian Mediterranean water. African Journal of Biotechnology Vol. 9(17),2010, pp. 2544-2559
ALMANSA, E.; MARTIN,M.V.; CEJAS,J.R.; BADIA, P.; JEREZ,S. and LORENZO,A. Lipid and fatty acid composition of female gilthead seabream during their reproductive cycle: effects of a diet lacking n-3 HUFA. J. Fish Biol., 59,2001, 267-286

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