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Comparative Study of Synthetic Pyrethroid Lambda-cyhalothrin and Neem based Pesticide Neemgold on the Fingerlings of Zebrafish Danio rerio (Cyprinidae)

Author Affiliations

  • 1Department of Zoology, DDU Gorakhpur University, Gorakhpur - 273 009 (UP) INDIA

Res.J.chem.sci., Volume 1, Issue (6), Pages 91-94, September,18 (2011)


Toxicity tests using early life stages of fish are of great importance in assessing risk to growth, reproduction and survival in polluted environments and are important tools for good environmental monitoring. In the present study, the toxicity of Lambda-cyhalothrin and Neemgold to the fingerlings of Zebrafish was evaluated. Five different concentrations viz. 0.03, 0.06, 0.09, 0.12 and 0.15”g/l for Lambda-cyhalothrin and 0.40, 0.45, 0.50, 0.55 and 0.60”g/l were selected for Neemgold. The 96h LC50 value for Lambda-cyhalothrin was calculated to be 0.072, 0.066, 0.058 and 0.053”g/l and for Neemgold 0.52, 0.50, 0.49 and 0.46”g/l. The toxicity of zebrafish fingerlings was time as well as concentration dependent. The fingerlings were more sensitive to Lambda-cyhalothrin than to the Neemgold.


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