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本文对中华绒螯蟹抱卵颜色为异常的粉红色与土黄色进行了分析。实验结果表明,逐渐加入海水与直接排光淡水、加入海水的两种促产方式和较低的交配水温(1.6～9℃)不会造成河蟹抱卵颜色异常,雌蟹的性腺发育状况是产生这种现象的原因,粉红色卵与土黄色卵是由性腺处于Ⅱ、Ⅲ期的雌蟹产的,为受精卵。两种卵胚胎发育正常,孵出的幼体发育也正常,在生产中可以应用。
In this paper, we analyzed the pink and khaki colors of the eggs of the Chinese mitten crab (Eriocheir sinensis). The experimental results showed that the gradual addition of seawater and direct freshwater, the two kinds of pro-farming methods of adding seawater and the lower mating water temperature (1.6 ~ 9 ℃) The reasons for the phenomenon, the pink egg and yellow egg is from the gonads in stage Ⅱ, Ⅲ female crab production, fertilized eggs. Both embryos develop normally and their larvae hatch normally develop and can be used in production.