Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 11, Issue 1, 2009; Page No.(169-171 )

IMPACT OF PESTICIDES ON PROTEIN LEVEL IN THE FRESHWATER FISH LABEO ROHITA (HAM.)

A. RADHA AND K. RAJENDRAN

Abstract

Effect of pesticides metasystox and dimethoate on the protein content of the liver, muscle, gill and intestinal tissue of the freshwater fish LabeĀ° rohita were estimated. Fishes were exposed to different sublethal concentration of pesticides (0.01, 0.02 and 0.03 ppm of metasystox and 0.06, 0.07 and 0.08 ppm of demethoate) for 21 days. Prior to the experimentation toxicity evolution was conducted to determine LC50 value for 96 hrs. The protein content was significantly reduced in the tissues of LabeĀ° rohita treated with pesticides. The depletion of protein content in liver, gill, muscle and intestine is directly proportional to concentration of pesticides. The percentage of protein reduction was so prominent in metasystox than demethoate. It implied that toxic stress alter the protein nature and nutritive value of the fish. Hence the present study suggested that aquaculture should be practiced in an unpolluted water bodies which are free from pesticides.

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