【摘要】 以组织学、组织化学方法研究了中华绒螯蟹后期的性别分化过程。结果表明,中华绒螯蟹雌雄个体在此过程中形态学变化差异显著,雌蟹最宽腹节由第一节逐渐向第五节转变,雄蟹则始终为第三节;雄蟹最长腹节长与背甲长的比率随背甲的增大而减小,而雌蟹则相反,其形态上的差异可作为区分幼蟹性别的直观依据。卵巢从发生到成熟,其颜色由透明、白色、浅咖啡色、豆沙色至深豆沙色转变;精巢的发生则早于卵巢,当卵巢仅为原始生殖细胞团时,精巢已初步具有完整的形态,并且精子出现的时间早于成熟期初级卵母细胞。组织化学研究表明,在精子发生和成熟期卵母细胞形成过程中,都存在多糖类物质积累的过程,同时卵母细胞还进行蛋白质的积累,并且蛋白质的积累早于多糖类物质的积累。更多还原

【Abstract】 The latter part of the sex differentiation of Eriocheir sinensis was studied by histological and histochemical methods. The results showed that there were significant differences between male and female during the process. The maximum abdominal segment transformed from Ⅰ to Ⅴ in different stages of growth in female, while in male, the maximum abdominal segment was Ⅲ throughout its life. The ratio of the length of the longest abdominal segment to the length of the back of carapace decreased in pace with increasing of the latter in male, and the female was contrary to this. It was easy to distinguish the immature male and female on the basis of morphological differences. In the process of occurrence to maturity of ovaries, the colors were from transparency to white, light coffee, brown and dark brown. The occurrence of testes was earlier than ovaries. The testes had been in a complete shape when the ovaries were a crowd of primary germ cells. And the time when the sperms occurred was earlier than the time when the oocytes of maturation formed. Histochemical studies showed that there was an accumulation of polysaccharose during the process of forming sperms and oocytes of maturation. It was also a process of accumulating protein in forming oocytes of maturation. And the time when the protein began accumulating was earlier than that of the polysaccharose.更多还原