Study the Ultrastructure of the Male Sexual Gonads in Cave Salamander, Paradactylodon gorganensis

Cave Salamander، Paradactylodon gorganensisis a native species of Iran and only found in the Shir-abad cave of Gorgan. In this study، the gonads of male animals have been studied by electron microscopy. In order to fulfill this purpose، five Paradactylodon gorganensisSalamander collected from May to September from Shir-abad cave and were transported to the laboratory. After reviewing the anatomy and morphology of the animals، they were anesthetized and dissected. Testicles cut into small pieces and fixed in Glutaraldehyde fixative. With using standard procedure، histological grade composite was prepared for microscopic study. Animal studies showed that this species have not two sex. A pair of testicles and a cream-colored cylindrical are in the abdominal cavity and all attached to the kidney also، yellow fat bodies were seen. Gonads are sectional، marginal lobes are large and multifaceted but central lobes are small and round. Spermatogenesis have cystic pattern and testicular spermatogenesis in active testis groups of cells in different stages are seen in different lobes، were seen in a sexual but in one lobe most of cells are synchronized. Spermatozoa were drawn، but the core of the acrosome was not observed.