Induced breeding of medicinal fish Heteropneustes fossilis by using ovatide
Keywords:
Induced breeding, Heteropneustes fossilis, ovatideAbstract
The present study explores the induced breeding of Heteropneustes fossilis, a commercially and medicinally valuable freshwater catfish, using the synthetic hormone Ovatide under controlled hatchery conditions. Conducted between July and December 2022 at the Department of Zoology and Applied Aquaculture, Barkatullah University, Bhopal, the breeding trials were carried out during the monsoon season. Healthy, mature brooders were sourced from local markets and departmental ponds, then acclimatized and maintained for two months in treated tanks. Water quality parameters were regularly monitored and optimized for breeding. Brooders were fed a nutritionally rich artificial diet and managed in tanks with aquatic vegetation (Hydrilla and Pistia) to support egg adhesion. Brooders exhibited growth during the management phase, with females reaching 40–60 g and males 30–50 g. Hormonal induction was performed with intramuscular injections of Ovatide at dosages of 1 ml for females and 0.5 ml for males, followed by hand stripping and artificial fertilization. Fertilized eggs were incubated under controlled conditions with continuous water flow and oxygenation to enhance survival and hatching rates. Results showed successful fertilization (80%) and survival (50%), with eggs adhering to aquatic weeds and developing under incubation. The study demonstrated that induced breeding using Ovatide is an effective method for the mass production of H. fossilis seed. This technique ensures a reliable and timely supply of quality fish seed, offering a strategic approach for the conservation, commercial cultivation, and sustainable management of this important indigenous species.
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