Bology of Mature 0<sup>+</sup> Crabs, <i>Briocheir Sinensis</i> (II)：Sexual Behaviour, Overwintering Habit and Molting Possibility
TL;DRAbstract
本文对池塘育成的一秋龄成熟中华绒螯蟹(Eriocheir sinensis)生殖行为的观察表明,其具有生殖洄游习性,当年10月是其活动高峰期.而湖泊放流育成的早熟河蟹其活动高峰在当年10月及翌年3月.在湖泊淡水水体中少数个体有交配的行为,翌年3月份发现部分雌蟹的纳精囊内有精液.在池塘中一龄成熟河蟹与未成熟河蟹一样有居洞越冬的行为,从翌年3月初开始,白天蛰伏洞里,夜晚出来活动随着温度上升,成熟河蟹完全离开洞穴,四处爬动.1995年7月上旬,作者从刚死亡的早熟河蟹剥离出形态完整的膜状新壳.但是,未发现早熟河蟹自行蜕壳.;The mature 0<sup>+</sup> crabs, Eriocheir sinensis, hold the spawning migration and some of them have the mating behavor in freshwater lakes, and the sperm in the female spermathecum is observed in next March. The peak of mature 0<sup>+</sup> crabs, activity arrives at October and next March. 79 mature 0<sup>+</sup>crabs (27 ♀, 52♂) were caputured from the 272 crab-holes in earth-ponds in March 1995. The new soft shells with distinctive spines and ridges were peeled from the dead female crabs in early July 1995. But the authors don't find the old shells taken off by crabs themselves.
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本文对池塘育成的一秋龄成熟中华绒螯蟹(Eriocheir sinensis)生殖行为的观察表明,其具有生殖洄游习性,当年10月是其活动高峰期.而湖泊放流育成的早熟河蟹其活动高峰在当年10月及翌年3月.在湖泊淡水水体中少数个体有交配的行为,翌年3月份发现部分雌蟹的纳精囊内有精液.在池塘中一龄成熟河蟹与未成熟河蟹一样有居洞越冬的行为,从翌年3月初开始,白天蛰伏洞里,夜晚出来活动随着温度上升,成熟河蟹完全离开洞穴,四处爬动.1995年7月上旬,作者从刚死亡的早熟河蟹剥离出形态完整的膜状新壳.但是,未发现早熟河蟹自行蜕壳.;The mature 0<sup>+</sup> crabs, Eriocheir sinensis, hold the spawning migration and some of them have the mating behavor in freshwater lakes, and the sperm in the female spermathecum is observed in next March. The peak of mature 0<sup>+</sup> crabs, activity arrives at October and next March. 79 mature 0<sup>+</sup>crabs (27 ♀, 52♂) were caputured from the 272 crab-holes in earth-ponds in March 1995. The new soft shells with distinctive spines and ridges were peeled from the dead female crabs in early July 1995. But the authors don't find the old shells taken off by crabs themselves.
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