Induced Reproduction of Clarias gariepinus (Burchell 1822), African Catfish, through Hormonal Induction Using Ovaprim at the Aquaculture and Mytiliculture Research Center of Senegal (CRAMS)

Abstract

Aims: This study aimed to evaluate the effectiveness of hormonal induction using Ovaprim, an analogue of Human Chorionic Gonadotropin (HCG), in triggering artificial reproduction in African catfish (Clarias gariepinus) under captive conditions, while considering interacting biotic and abiotic factors, such as broodstock quality and water temperature, influence reproductive success.  Study Design: This was an experimental study. Place and Duration of Study: The experiment was conducted at a fish breeding facility under controlled pond conditions over a defined breeding period [specify months/year if required]. Methodology: Sexually mature female African catfish were hormonally induced using Ovaprim. Male broodstock were selected based on gonadal maturity. After induction, eggs were collected through siphoning and fertilized using milt obtained from selected males. Reproductive performance was evaluated using absolute and relative fecundity, fertilization rate, and hatching rate as indicators of egg viability. Environmental conditions and handling techniques were carefully monitored throughout the experiment. Results: Hormonal induction with Ovaprim successfully triggered ovulation in mature females. Reproductive success varied according to broodstock quality and handling procedures. Higher fecundity, fertilization, and hatching rates were observed in females with advanced sexual maturity and when proper siphoning techniques were applied. Effective male selection also significantly influenced fertilization success. The results indicate that Ovaprim is effective in inducing artificial reproduction; however, outcomes are strongly influenced by broodstock condition and management practices rather than hormonal treatment alone. Conclusion: Artificial reproduction of African catfish using Ovaprim is feasible and effective under captive conditions. Successful outcomes depend not only on hormonal induction but also on proper broodstock selection, female sexual maturity, and appropriate egg handling techniques. Optimizing these factors can significantly improve reproductive efficiency in African catfish aquaculture.