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Saturday 2 June 2018
蛤蜊怎么繁殖后代?
蛤蜊雌雄异体,在生殖季节,雄体排出的精子随水流进入雌体的鳃水管,在那里与卵相遇而受精,随后孵化。往后有区别:海水种类孵化为担轮幼虫,被雌体释放后发育为面盘幼虫,最终称为幼蛤蜊;淡水种类孵化为钩介幼虫,被雌体释放,随后附着在鱼的鳃或鳍上,暂营寄生生活,最后离开鱼体称为幼蚌。
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