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7439686 
Journal Article 
Hormonal Influence on Induced Maturation and Spawning in Striped Murrel, Channa striata 
Kumar, R; Damle, DK; Pillai, BR; , 
2021 
Springer Singapore 
Singapore 
Recent updates in molecular Endocrinology and Reproductive Physiology of Fish 
63-76 
Striped murrel (snakehead) Channa striata, an air-breathing fish, is a delicacy among the consumers for its tenderness, less muscular spines and typical flavour. It is highly nutritive, recuperative and also known for its medicinal values. Unavailability of quality seed is a major constraint in murrel farming. The collection of murrel brooders for instant induced breeding trial from earthen pond is quite difficult and fishes incur considerable amount of stress which results in poor breeding response. Therefore, striped murrel brooders were raised in the concrete cistern with hormonal, habitat and feeding manipulations. Concrete cisterns were provided with soil base and floating aquatic macrophytes to simulate the natural environmental conditions. Fish are fed 2–3% of their biomass, 1% comprising of live insects/prawn/small fish and 1–2% of trash fish and rice bran (3:1). The hormone pellets of HCG were prepared and implanted intramuscular (500 IU/Kg body weight of fish) on dorsal side of fish for better maturation and synchronization of broodstock. Total replacement of water was done at weekly interval to maintain the water quality. It was observed that brooders attained full maturity in 3 weeks after implantation. Brooders in the weight range of 400–800 g were taken for breeding trials and fishes were injected intramuscularly with inducing agents (HCG, PGE and sGnRHa) for successful induced spawning. Then fishes were released into indoor circular breeding pools in 1:1 male to female ratio. They showed peculiar breeding behaviour before spawning. Spawning time was 16–18 h at 26–28 °C and eggs were free floating, spherical, non-adhesive and bright yellow in colour. The standardization of induced maturation and spawning of C. striata has paved the way for mass scale seed production of striped murrel.