Hormonal Manipulation in Breeding of Pabda, Ompok bimaculatus (Bloch, 1794) Under Captive Condition

Author: Arijit Karan, Mahendra Kumar Yadav, B. K. Mahapatra, Shriparna Saxena and Deepak Kher

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Abstract

Ompok bimaculatus, commonly known as butter catfish, is a significant food fish in India's aquaculture industry due to its high value and potential for diversification. Twelve separate induced breeding trials were carried out with 54 pairs of brooders, from September to January 2023. The most appropriate, reduced, and standardised hormonal dosages were 0.4 ml kg-1 for male and 0.8 ml kg-1 for female body weight, respectively. Fish spawned naturally in captive conditions. The relative fecundity ranged from 372.4 ± 2.85 eggs/g of body weight of the female. The ovulation for induced natural egg laying was 10±2 hrs at a temperature of 29±1°C. The fertilization rate was 82±9%. Fertilized eggs were distributed in the glass incubation chamber with an artificial aeration system. After fertilization, the egg hatched out in 18±2 hours at 29 ± 1 °C. In 57.5±3 hours, the yolk sac was fully absorbed, and the hatching rate was 87±3%.

Keywords

Pabda, Induced breeding, captivity, Natural spawning

Conclusion

The current research, titled “Hormonal Manipulation in the Breeding of Pabda, Ompok bimaculatus Under Captive Conditions,” aims to address this need by enabling large-scale seed production. This study pioneers a method that avoids the need for sacrificing males or stripping females, thereby allowing natural spawning to occur through hormone injections. The hormonal doses have been carefully optimized to minimize intervention while maximizing efficiency, with dosages set at 0.8 ml per kg of body weight for females and 0.4 ml per kg for males. This optimized hormonal approach not only enhances fish production but also holds promise for sustainability by potentially reducing the impact on fish health compared to more invasive traditional methods. My findings offer valuable insights for researchers and farmers focusing on the aquaculture of Pabda fish, ensuring that the growing demand is met responsibly and efficiently.

References

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How to cite this article

Arijit Karan, Mahendra Kumar Yadav, B.K. Mahapatra, Shriparna Saxena and Deepak Kher (2024). Hormonal Manipulation in Breeding of Pabda, Ompok bimaculatus (Bloch, 1794) Under Captive Condition. Biological Forum – An International Journal, 16(7): 12-16.