EFFECT OF STOCKING DENSITY ON GROWTH AND SURVIVAL OF OMPOK BIMACULATUS (BLOCH) LARVAE
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Authors
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Chandan Debnath
ICAR – Research Complex for North East Hill Region, Tripura Centre,
Lembucherra – 799210
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Kiran Dube
ICAR – Central Institute of Fisheries Education, off Yari Road, Panch Marg, Versova,
Andheri (W) Mumbai – 400061.
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Lopamudra Sahoo
ICAR – Research Complex for North East Hill Region, Tripura Centre,
Lembucherra – 799210
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Mrinmoy Datta
ICAR – Research Complex for North East Hill Region, Tripura Centre,
Lembucherra – 799210
Abstract
The study was aimed at evaluation growth and survival of Ompok bimaculatus larvae at different stocking densities (2,4,6,8 and 10 larvae/litre) during their nursery phase. Total length, weight, growth rate, percent weight pain and survival rate of larvae were found to decrease significantly with increased stocking density level of 8 larvae/ litre and above at the end of second and fourth week of rearing period. Total biomass content (g/L) increased significantly at stocking density level of 6 larvae/litre onwards. Considering the value of growth and survival rate, the stocking density level of 6 larvae/ litre was identified as optimum for nursery rearing of O.bimaculatus larvae.
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Key words: Ompok bimaculatus, growth rate, weight gain, survival rate.
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