Keywords
spawning
fecundity
Edremit Bay
How to Cite
Abstract
This study provides insights into the reproductive traits of 754 individuals of Trachurus mediterraneus collected in Edremit Bay between September 2008 and August 2009. The overall sex ratio differed significantly from the expected 1:1 ratio. Length at first sexual maturity (L50) in females was 18.6 cm. Macroscopic examination of gonads and gonadosomatic index analyses indicated that the spawning period extended from March to August, with peak activity in April. Fulton’s condition factor and the gonadosomatic index values showed inverse variation throughout the study period. Total fecundity ranged from 2,738 to 48,315 oocytes and showed strong positive correlations with total length and total weight. These findings provide essential information on the reproductive biology of this economically important species and may contribute to the sustainable management of its populations in the Aegean Sea.
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