【摘要】 粗糙沼虾雄性生殖系统由精巢和输精管组成，精巢内分隔成许多生精小管。生发区位于生精小管的一侧，生殖细胞的发育是非同步的。根据其外形和结构特征，整个输精管可分成四个部分：近端输精管、中部输精管、远端输精管及未端输精管更多还原

【Abstract】 The male reproductive system of M. asperulum consists of the testis and the vas deferens. The testis is partitioned into many seminiferous tubule. Germinative area lies in one side of seminiferous tubule. Development of germinal cells is not synchronous. According to its shape and structural character,the whole vas deferens is comprised of four different parts: proximal vas deferens, middle vas deferens, distal vas deferens and terminal vas deferens.更多还原