Acute toxicity of copper sulphate to fresh water prawns

 

H. S. Lodhi, M. A. Khan, R. S. Verma and U. D. Sharma

Prawn Research Center, Department of Zoology, University of Lucknow, Lucknow ? 226 007, India

 

(Received: 7 September, 2004 ; Accepted: 10 March, 2005)

 

Abstract: Fresh water prawns, Macrobrachium lamarrei and Macrobrachium dayanum (Crustacea-Decapoda) were subjected to static bioassay tests to ascertain the LC₅₀ values of copper sulphate. The 24, 48, 72 and 96hr LC₅₀ values of copper sulphate for M. lamarrei were 0.38, 0.361, 0.343 and 0.300 mg/l and for M. dayanum were 1.634, 0.988, 0.532 and 0.418 mg/l respectively. Behavioral responses and LC₅₀ values indicate that M. lamarrei were more sensitive to copper sulphate than M. dayanum.

 

Key words: Acute toxicity, Copper sulphate, LC_50, Crustacea, Macrobrachium.

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