Reproductive Biology of the Blue Crab, Callinectes amnicola (De Rocheburne) in the Lagos Lagoon, Nigeria
Reproductive Biology of the Blue Crab, Callinectes amnicola (De Rocheburne) in the Lagos Lagoon, Nigeria
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尼日利亚拉各斯泻湖蓝蟹 Callinectes amnicola (De Rocheburne) 的生殖生物学
DOI：
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发表时间：
2010
影响因子：
1.3
通讯作者：
A. Lawal
中科院分区：
文献类型：
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作者：
A. Lawal
研究了尼日利亚拉各斯泻湖中的红腹凤蝶的性比、生殖力、成熟发育和卵子发生。男女比例为1：0.96。生育力估计值范围在478，400至4，480，500个卵子之间，平均值为780，480个卵子。卵的直径在0.25 ~ 0.35mm之间，平均0.29mm。成熟达到6.2和16.5厘米甲壳宽度（CW）的女性和7.3和15.3厘米CW的男性之间。雄性在10.8 cm CW和雌性在11.0 cm CW时达到50%成熟度（TL 50）。生殖腺的成熟期分为5个阶段。观察到卵母细胞的三个主要发育阶段。未成熟和成熟的螃蟹，全年在泻湖中获得，表明该物种全年繁殖，3月至6月之间的高峰。
Sex ratio, fecundity, maturation development and oogenesis of Callinectes amnicola (De Rocheburne) in the Lagos Lagoon, Nigeria were investigated. The male/female ratio was 1:0.96. Fecundity estimates ranged between 478,400 and 4,480,500 eggs with a mean of 780,480 eggs. The diameter of the eggs varied between 0.25 and 0.35 mm with a mean of eggs 0.29 mm. A low positive correlation existed between fecundity and weight (r = 0.247) of the crab. Maturity was attained between 6.2 and 16.5 cm carapace width (CW) for the females and between 7.3 and 15.3 cm CW for the males. Fifty percent maturity (TL50) was attained at 10.8 cm CW in the males and 11.0 cm CW in the females. Five maturity stages of gonads were identified. Three major developmental stages of oocytes were observed. Immature and mature crabs were obtained in the lagoon throughout the year indicating that this species breeds throughout the year with a peak between March and June.