Effect Of Pinealectomy And Melatonin Effect On Gonadal Development Of Catfish (Heteropneustes Fossilis) During Postspawning Period

• Main Author: Rani, Sudesh
• Format: Text
• Language: unknown
• Published: Zenodo 2018
• Subjects: Catfish, Gonads, Melatonin, Pinealectomy.; 10.5281/zenodo.1444083; Alvarez; Canada; Faure; Gomez; Indian; Lopez; Rani; Rubio; Vazquez; Turbot
• Online Access: https://dx.doi.org/10.5281/zenodo.1444083; https://zenodo.org/record/1444083

Pinealectomy (Px) and Melatonin treatment effect was examined in the male and female catfish Heteropneustes fossilis for 60 days. This experiment was done in post spawning period of the reproductive phase of catfish. The results of this study revealed that pinealectomy (Px) causes inhibitory effects on the GSI and the histology of the male catfish, while in the female catfish stimulatory effects on both was observed. In histological study of the female catfish stage I oocytes were present in the ovary of the control group whereas catfish administered with low (25, 50 mg) and high doses (100, 200, 400 mg) of melatonin very less number of stage I oocytes were seen but the percentage of atretic oocytes were increased when the melatonin doses were increased. The present study showed that the melatonin dose causes follicular atresia in female catfish during the post spawning period. Histological studies of male catfish showed large number of remnants of spermatozoa (rsz) in the testes of the control group while very little elevation of rsz were seen in the somniferous lobules with the increased in the melatonin dose. The result suggested that the effect of pinealectomy and melatonin treatment is mediated through an action of hypothalamo-hypophyseal gonadal axis. In conclusion, the melatonin played an important role to control the gonadal maturation in the catfish H. fossilis during the post spawning period. : {"references": ["Alvarino, J., Rebollar, P., Olmedo, M., Alvarez Blazquez, B., Ubilla, E., & Peleteiro, J. (2001). Effects of melatonin implants on reproduction and growth of turbot broodstock. Aquaculture International, 9(6), 477-487", "Aripin, S.A., Jintasataporn, O., & Yoonpundh, R. (2015). Effects of exogenous melatonin in Clarias macrocephalus male broodstock first puberty stage. 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