首页> 外文期刊>African Journal of Biotechnology >Spawning period and first maturity size of deep water rose shrimp (Parapenaeus longirostris) in the Aegean Sea
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Spawning period and first maturity size of deep water rose shrimp (Parapenaeus longirostris) in the Aegean Sea

机译:在爱琴海的深水玫瑰虾(Parapeonaeus longirostris)的产卵期和第一成熟度大小

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Parapenaeus longirostris?is one of the most important commercial crustaceans for the trawl fleet in the Aegean Sea. Spawning period and size at first sexual maturity of female?P. longirostris?were analysed from monthly samples collected by demersal trawls in the bay of S??ac?k and Ku?adas? in the Aegean Sea, from May 2008 to April 2009. The presence of ripe females was found between September and April (except March). The reproductive period, based on the percentages of maturity and gonadosomatic index (GSI), ranged throughout the year, reaching its peak two times; first peak occurred in autumn (September to November) and the second in spring (March to April). The minimum female size at maturity (carapace length) was 13.7 mm, and 50% of the female population was mature at about 24.6 mm carapace length at first maturity.
机译:ParapeNaeus longirostris?是爱琴海的拖网舰队中最重要的商业甲壳类动物之一。在女性的第一次性成熟时产卵期和大小?p。 longirostris?从S?k和ku的湾的横拖网收集的月度样本分析了?k和ku?在爱琴海,从2008年5月至2009年4月。9月至4月之间发现了成熟的女性的存在(3月除了3月)。基于成熟度和促性腺指数(GSI)的百分比,整个年份的百分比,达到两倍的峰值;第一座峰在秋季(9月至11月)和春季第二次(3月至4月)发生。成熟度(甲壳长度)的最小女性尺寸为13.7毫米,50%的雌性群在第一次成熟时成熟约24.6毫米甲状腺长度。

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