• Development and Reproduction
• /
• v.5 no.2
• /
• pp.145-150
• /
• 2001

The testis of Neoditrema ransonneti is testicular tubule type, each testicular tubule consists of numerous testicular cysts which contain numerous germ cells showing the same developmental stage. During spermatogenesis, well developed rough endoplasmic reticula and the Golgi complex are observed in the cyst cell. Secretory activity of cyst cell was the highest in the late spermiogenesis. Sperm binding materials of spermatozeugmata are secreted by testicular cyst cell. One spermatozeugmata is produced by a testicular cyst during spermatogenesis. The capsular structure was not found in the spermatozeugmata discharged from male. According to observations under transmission electron microscopy approximately 1,500 to 1,700 of sperm tails were observed in the cross sectioned spermatozeugmata.