九孔鲍卵子发生及卵巢发育的组织学观察

Histological Studies on the Oogenesis and Ovarian Development in Haliotis diversicolor supertexta

采用组织学方法研究了九孔鲍(Haliotis diversicolor supertexta)的卵子发生、卵巢结构及其发育。根据卵细胞的大小、形状,核仁的形态,卵黄颗粒的积累情况,滤泡的结构等,将九孔鲍卵子的发生分为卵原细胞、卵黄发生前的卵母细胞和卵黄发生期的卵母细胞3个时期;卵巢壁由外膜及内生殖上皮构成,生殖上皮分化产生卵原细胞和滤泡细胞;卵巢的结构单位是滤泡。根据卵巢的外部形态和内部组织结构,将九孔鲍的卵巢发育分为休止期、增殖期、生长期、成熟期和排放期共5期。

The oogenesis and ovary structure during development were studied in Haliotis diversicolor supertexta. According to the size and shape of oocyte, the morphology of nucleolus, the growth of yolk and the structure of follicle, oogenesis of H. d. supertexta can be divided into three stages as follows： oogonium, previtellogenic oocyte and viteUogenic oocyte. The ovary wall is composed of tunica adventitia and germinal epithelium which will produce oogonia and follicle cells. The follicle is the structure unit of ovary. The ovary development cycle can be divided into five stages according to the external morphology and inner structure of ovary： suspensive stage, proliferation stage, growing stage, maturation stage and breeding stage.