Quantitative and qualitative analysis of spawning behaviour of Heteropneustes fossilis (Bloch.) (Siluridae) in laboratory aquaria |
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Authors: | S Roy B C Pal |
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Institution: | Centre for Life Sciences, North Bengal University, Darjeeling, India 734430 |
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Abstract: | Induced breeding of Heteropneustes fossilis (Bloch.) was studied in laboratory aquaria. Quantitative and qualitative data on pre-mating, mating, and post-mating behaviour and related parameters were recorded. Among the pairs examined, 83% spawned successfully. Mating behaviour started between 6 and 15 h after administration of pituitary hormones. The number of enfoldings varied from 25 to 350. Over 93% of the released eggs hatched within 21–24 h at temperature 24–31°C. |
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