摘要
作者自1989年起,对泥螺的物学进行了详细的观察研究工作,结果表明:①泥螺为雌雄同体种类,性成熟年龄为近一龄,繁殖期为三月底到十一月下旬;②卵子的发生,从原始生殖细胞开始,经过增殖、生长、成熟三个阶段;③精子发生,从原始生殖细胞开始,经过增殖、生长、成熟、变态四个阶段。此外,本文还就泥螺的繁殖期、交配产卵、繁殖特性作了进一步的讨论。
Since 1989,biology of Bullacta exarata has been studied.The results are as follows. 1.The mire snail is monoecism.The age of sexmature is about one year.The reproduce period is from the end of Mar.to the last ten-day of Nov.in the coastal Northern of Zhejiang; 2.The development of ovum begins from preliminary reproduction cell passing through the stages of proliferation,growth and mature; 3.The development of sperm,begins from preliminary reproduction cell passing through the stages of proliferation,growth,mature and meta- morphosis; Besides,the reproduce period,the mating and spawing and the feature of reproduce are discussed.
