中文摘要：

采用石蜡组织切片法,对澜沧江特有鱼类中国结鱼的性腺发育进行组织学观察,系统地描述了各期卵巢和精巢的形态结构、特征及变化。中国结鱼的卵巢和精巢的发育均分为6个时期,卵巢中共有5个时相的卵母细胞,精巢中有5种形态的生殖细胞。第2时相末期到第3时相早期卵母细胞的细胞质中出现卵黄核,细胞核中的核仁出现外排现象,核仁的外排物可能与核周的颗粒卵黄的形成有关。中国结鱼的精巢属于小叶型结构。

英文摘要：

The gonadal development of Tor （Tor） sinensis in the Lancang River was observed under light microscope, and the characters of the ovary and testis at different stages were described as well. Both the developments of ovary and testis were divided into six stages, and there were five phase of the oocyte in ovary and five forms of germ cell in testis. Yolk nuclear was observed in the cytoplasm of late phaseⅡto early phaseⅢ of oocyte, and the nucleus of nucleolus began to be discharged. The discharge of nucleus might be related to the formation of yolk granules which surrounding the nucleus. The testis of Tor （Tor） sinensis was tubular in shape.