摘要
作者通过石蜡切片技术与苏木精 伊红染色的组织学方法及超薄切片技术和透射电镜观察 ,较系统地研究了椭圆背角无齿蚌卵细胞的发生、发育与成熟过程的细胞学特征 :原始生殖细胞在滤泡壁上分裂增殖 ,成为卵原细胞、卵原细胞发育、膨大成为卵母细胞而排入滤泡腔 .在滤泡腔中卵母细胞不断地进行卵黄的合成与积累 ,体积继续增大 .最后成熟的卵母细胞 ,在未完成减数分裂的情况下直接排入外鳃叶腔 ,与随水流入的精子相遇而受精 .在观察的基础上 ,作者比较分析了双壳纲淡水贝类生殖过程中所具有的一般特征 ,着重讨论了卵子发生过程中的双核仁现象与卵黄发生 ,成熟卵母细胞减数分裂的阻断与重新起始 .
By means of histological section and H.E. dyeing, light microscope and transmission electron microscope observation, the work is concentrating on the cytological features of oogenesis of Anodonta woodiana elliptica (Heude). In follicular epithelium primordial germ cells develop into oogonia by mitotic division. Oogonia swell in both nucleus and cytoplasm, and thus form early oocytes, which fall into the follicular cavity. In follicular cavity early oocytes swell further because of synthesis, uptaking and storage of large amount of yolk, and increase much in size. After maturation but without meiosis, oocytes are ovulated into outer gills, in which the oocytes meet with sperm and fertilization takes place. On the basis of observation, the oogenesis, vitellogenesis, and meiosis are being discussed.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第3期546-551,共6页
Journal of Sichuan University(Natural Science Edition)
基金
国家自然科学基金 (39970 5 77)
关键词
椭圆背角无齿蚌
卵子发生
减数分裂
卵黄发生
Anodonta woodiana elliptica (Heude)
oogenesis
meiosis
vitellogenesis
