湛江地区光裸星虫的生殖细胞发育和生殖周期Development of Germ Cells and Reproductive Cycle of Sipunculus nudus L in Zhanjiang
王庆恒,杜晓东,黄洪艳,秦红贵
摘要(Abstract)：
采用活体观察和常规石蜡切片技术对湛江地区光裸星虫生殖周期、生殖细胞的发育及形态结构进行研究。结果表明:星虫雌雄异体,无肉眼可见生殖腺结构,原生殖细胞在体腔液中发育;雌性生殖细胞根据其卵膜的形成和卵黄积累情况可以分为4个发育阶段,小生长期、大生长期、成熟前期和成熟期;雄性生殖细胞也分为增殖期、生长期、成熟期和变态期4个阶段;成熟的生殖细胞经肾管排出体外。生殖季节为5~9月,其中7~8月为高峰期。
关键词(KeyWords)： 光裸星虫;生殖细胞;发育;生殖周期;湛江
基金项目(Foundation):
作者(Author): 王庆恒,杜晓东,黄洪艳,秦红贵
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