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International Journal of Biological Chemistry

Year: 2008 | Volume: 2 | Issue: 1 | Page No.: 35-41
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Authors

M. Sreenivasa Rao

N. Anjaneyulu

Keywords

Research Article

Effect of Copper Sulfate on Molt and Reproduction in Shrimp Litopenaeus vannamei

M. Sreenivasa Rao and N. Anjaneyulu
The effect of copper sulfate in the regulation of molt and gonad development in the shrimp Litopenaeus vannamei was investigated. Initially, we determine the copper sulfate safe level for use in culture medium shrimps. Six concentrations of copper sulfate (0, 0.01, 0.05, 0.1, 0.2, 0.5 mg L-1) were tested in 10 L glass aquaria for 15 days. After 15 days, survival of the control treatment (0% CuSO4) averaged 100%. The survival in 0.01, 0.05, 0.10 and 0.20 mg L-1 (100, 100 and 98%) concentrations of CuSO4 were significantly greater than the higher dose treatment (0.50 mg L-1 CuSO4; survival 43%). The copper (0.05 mg L-1) exposed shrimps accelerated the molting (premolt stage: female, 100%; males, 90%). The copper (0.10 mg L-1) exposed shrimps accelerated the both molting and reproduction (premolt stage: female, 50%; males, 40%). The copper (0.20 mg L-1) exposed animals significantly (p<0.0001) increased mean oocyte diameter and testicular follicle diameter as well as mean gonad indices from the control as well as other treated shrimps. These results provide strong evidence that trace amount of copper is an essential for both molting and reproduction in shrimps.
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How to cite this article

M. Sreenivasa Rao and N. Anjaneyulu, 2008. Effect of Copper Sulfate on Molt and Reproduction in Shrimp Litopenaeus vannamei. International Journal of Biological Chemistry, 2: 35-41.

URL: https://scialert.net/abstract/?doi=ijbc.2008.35.41

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nsivakrishna Reply

sir I am nsivakrishna and my aquaculture problem is vanami prawns in my pond some prawns are not moulting in growth in2 months and also in muscle back reddish colour in pond and die some prawns so please help me some other

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