Study of gonad morphology and histology of goby, Parachaeturichthys ocellatus (Day 1873) from the creeks of Mumbai
The gonad morphology and histology of goby fish Parachaeturichthys ocellatus (Day 1873) was studied from July 2010 to September 2011 from the creeks of Mumbai. This study was aimed to understand the reproductive aspect of P.ocellatus. The gonad maturity of the fish based on macroscopic and microscopic observation was divided into five stages as 1. Immature Developing 3. Mature 4. Ripe 5. Spent. In male P.ocellatus main reproductive organ testis showed regular changes in the testicular cycle with spermatogenic activity with various stages of cells such as spermatogonia, primary spermatocytes, secondary spermatocytes, spermatids, and spermatozoa. The accessory sexual organ, seminal vesicles appeared at the base of the testes and these opened into the spermatic duct. The gonads and accessory organ in female P.ocellatus consisted of a pair of ovaries, a common oviducts and genital papillae. The pattern of oocyte maturation in P.ocellatus in immature stage showed asynchronous development since many different stages of ova development were observed simultaneously. Histological studies of ripe stage revealed that all the oocytes mature together and there is hardly any oocytes in any other stage which confirms that P.ocellatus is a single spawner. Atretic oocytes were predominantly observed in spent ovary in the state of degeneration. The present study will be helpful in wise management of fishery of P.ocellatus from the creeks of Mumbai.
Bindu Panicker. Study of gonad morphology and histology of goby, Parachaeturichthys ocellatus (Day 1873) from the creeks of Mumbai. International Journal of Fisheries and Aquatic Research, Volume 6, Issue 2, 2021, Pages 01-09