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首页> 外文期刊>Journal of Applied Ichthyology >Reproductive biology of the annular seabream, Diplodus annularis (Linnaeus, 1758), in the Gulf of Gabes (Central Mediterranean)
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Reproductive biology of the annular seabream, Diplodus annularis (Linnaeus, 1758), in the Gulf of Gabes (Central Mediterranean)

机译:加贝斯湾(地中海中部)的环状鲷(Diplodus ringis)的生殖生物学(林奈,1758年)

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摘要

Annular seabream, Diplodus annularis (Linnaeus, 1758), were caught off the coast of the Gulf of Gabes (Southern Tunisia, Central Mediterranean) between April 2008 and March 2010 by commercial catches. With a total 2066 specimens the fish ranged in size from 7.7 cm to 18.5 cm total length and from 7.5 g to 123.3 g in weight. Changes in biological parameters (weight, length, gonadosomatic index, hepatosomatic index and condition factor) were examined in order to provide information on the spawning period and reproductive cycle in the gulf. Overall sex ratio was 1 : 1.52 in favour of females. The reproductive season extends from March to June, with a spawning activity peak in May. Total length at sexual maturity was 10.5 +/- 0.22 cm (males) and 10.6 +/- 0.3 cm (females). The results of this study could help to establish a recommended minimum capture size.
机译:在2008年4月至2010年3月之间,加贝湾沿岸(突尼斯南部,中地中海地区)被商业性捕捞捕捞到环状海鲷(Diplodus ringis,1758年,Linnaeus)。共有2066个标本,鱼的总长为7.7厘米至18.5厘米,重量为7.5克至123.3克。检查生物学参数的变化(体重,长度,性腺体指数,肝体指数和条件因子),以便提供有关海湾产卵期和生殖周期的信息。总体性别比为1:1.52,以女性为好。生殖季节从三月到六月延伸,五月产卵高峰。性成熟时的总长度为10.5 +/- 0.22 cm(男性)和10.6 +/- 0.3 cm(女性)。这项研究的结果可能有助于建立建议的最小捕获大小。

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