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2014年11月至2015年10月对长江口脊尾白虾(Exopalaemon carinicauda)繁殖生物学进行了研究。结果表明:长江口脊尾白虾体长在25~75 mm,优势体长范围为35~55mm,平均体长(48±9)mm;周年间月性比变化介于0.89~1.63,年平均性比为1.12±0.22,卡方检验雌雄数量差异不显著;长江口脊尾白虾繁殖期在3—10月,繁殖高峰期在5—8月;5—6月繁殖群体以越年虾为主,7月繁殖群体以当年虾为主;个体绝对生殖力(F)在660~8000粒,与体长(L)呈直线相关,F=68.86L-2072(R2=0.498);个体绝对生殖力与体重(W)也呈直线相关,F=318.5W+267.0(R~2=0.504)。
The breeding biology of Exopalaemon carinicauda from November 2014 to October 2015 was studied. The results showed that the body length of Pleurotus ostreatus was 25-75 mm in length and 35-55 mm in length, with an average body length of (48 ± 9) mm. The monthly ratio of change in monthly mean age ranged from 0.89 to 1.63, The ratio was 1.12 ± 0.22, there was no significant difference between male and female chi-square test. The breeding season of white-footed white shrimp was from March to October in the Yangtze River estuary and from May to August in May-June. In July, the breeding population was dominated by shrimp in the year; the absolute fecundity (F) of individuals was 660-8000 grains, which was linearly correlated with body length (L), F = 68.86L-2072 (R2 = 0.498) Body weight (W) also showed a linear correlation, F = 318.5W + 267.0 (R ~ 2 = 0.504).