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Reproductive biology of Trachurus mediterraneus (Carangidae): a detailed study for the Marmara–Black Sea stock

Published online by Cambridge University Press:  30 August 2012

Nazli Demirel  and
Ahsen Yüksek
Nazli Demirel*
Affiliation:
Institute of Marine Science and Management, Istanbul University, 34116, Vefa, Istanbul, Turkey
Ahsen Yüksek
Affiliation:
Institute of Marine Science and Management, Istanbul University, 34116, Vefa, Istanbul, Turkey
*
Correspondence should be addressed to: N. Demirel, Institute of Marine Sciences and Management, Istanbul University email: ndemirel@istanbul.edu.tr
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Abstract

The reproductive biology of Mediterranean horse mackerel Trachurus mediterraneus was investigated in the Sea of Marmara over a one-year period. Duration and timing of the spawning season, gonad histology, oocyte development and size at sexual maturity were determined. The presence of all stages of oocytes without any distinct size hiatus indicated that oocyte development of Mediterranean horse mackerel is asynchronous with indeterminate fecundity. Spawning starts in May, peaks in July–August and ends in September. Sizes at 50% maturity were found to be 12.2 and 12.5 cm (total length) for females and males, respectively. Mean batch fecundity was calculated as 10136 ± 703 eggs. Our results on the size at sexual maturity and batch fecundity for the Sea of Marmara differed significantly from published results from the Mediterranean Sea. We ascribe these differences to different stock structures in these seas. Our results form the basis for future reproductive biology studies on the under-studied Marmara–Black Sea stock.

Keywords

Mediterranean horse mackereloocyte developmentspawning patternbatch fecunditysize-at-sexual maturityreproductive characteristicsthe Sea of Marmara
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 93 , Special Issue 2: Fish and Fisheries , March 2013 , pp. 357 - 364
Copyright
Copyright © Marine Biological Association of the United Kingdom 2012

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