Ecology, Environment and Conservation Paper

Vol 23, Issue 2, 2017; Page No.(986-991)

EFFECTS OF DIMETHOATE, CHLORPYRIFOS AND MALATHION ON GROWTH PARAMETERS OF INDIAN MAJOR CARPS

Manju Rani, R.K. Gupta and Jyoti Yadav

Abstract

The present study of 60 days was carried out to investigate the individual and combined effect of pesticides at various concentrations on the growth and behavior of Labeo rohita and Cirrhinus mrigala. Severe changes were observed regarding behavior of treated fish of the both species as compared to their respective control groups. The treated fishes while swimming exhibited jerky, restless and whirling movements with small resting periods along with frequent surface visiting for engulfing air. Changes in pigmentation and other apparently noticeable morphological aberrations like erosion, fin blackening, hemorrhage and body deformities were observed fortnightly. Growth performance decreased in both the species viz. L. rohita and C. mrigala as compared to control while an increase in Feed Conversion Ratio was observed in pesticide treated fishes.

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