The spermatogenesis of goby minnow(Pseudogobio esocinus) was investigated using transmission electron microscope. In primary spermatocytes, nuclei were round or oval and mitochondria were distributed in the cytoplasm. Secondary spermatocytes had round...
The spermatogenesis of goby minnow(Pseudogobio esocinus) was investigated using transmission electron microscope. In primary spermatocytes, nuclei were round or oval and mitochondria were distributed in the cytoplasm. Secondary spermatocytes had round electron-dense nuclei and mitochondria were congregated in the side of cytoplasm. The sperm had a round head, the acrosome was not found and a motile flagellum consisted of an axoneme with a typical 9+2 pattern of microtubule.