Acta Ichthyologica et Piscatoria 30(1): 53-60, doi: 10.3750/AIP2000.30.1.04
Induced spawning of the striped murrel Channa striatus using pituitary extracts, human chorionic gonadotropin, luteinizing hormone releasing hormone analogue, and ovaprim(r)
expand article infoM.A. Haniffa, T. Merlin, J. Shaik Mohamed
Open Access
Striated murrel Channa striatus were injected with natural hormones (pituitary extract and human chorionic gonadotropin) and synthetic hormones (luteinizing hormone releasing hormone analogue and ovaprim). When compared to the LHRHap and ovaprim, the latency period was long in pituitary- (24 h) and HCG-injected (26 h) fish. In the pituitary-injected C. striatus the percentage of fertilisation was the lowest (60-68%) but the duration of hatching was longest (39-43 h) followed by HCG- (36-38 h), LHRHap- (34-36 h) and ovaprim-injected (21-23 h) individuals. In terms of fertilisation (95-98%) and hatching, ovaprim yielded better results. Ova reached the highest diameter (1.34-1.45 mm) in C. striatus injected with ovaprim, followed by HCG (1.22-1.30 mm) and pituitary (1.21-1.27 mm). The lowest ova diameter (1.07-1.09 mm) was observed in C. striatus injected with LHRHap.