Study on histologically structure of gonads in the Brown banded Bamboo shark (Chiloscyllium punctatum) from the Mousa Creek

Brown-banded bamboo shark (Chiloscyllium punctatum) is one of the cartilaginousfish living in the Persian Gulf. In this investigation, 19 individuals of Brown-bandedBamboo sharks in the spring were sampled from the Mousa Creek at the north partof Persian Gulf. Gonad samples of sharks were removed and immediately fixed intoBouin’s solution. Histological sections of 5 micrometers prepared and stained withhematoxylin and eosin. The sections were studied using light microscope. The resultsshowed that the parenchyma of the gonad is divided into lobes by the connectivetissue of the capsule. Each testicular lobe contains numerous of round shapespermatocysts that having large numbers of spermatids and spermatozoa on theirinner center. Also, the number of spermatids and sperms progressively increase. Thespermatogonial zone was characterized by the formation of the spermatocysts. Inaddition, the Leydig cells were occupying inner spermatocysts part.

Keywords:

Histology , Gonad , Shark , Chiloscyllium punctatum , Mousa Creek