ACUTE TOXICITY AND RESPIRATORY RESPONSES IN FRESHWATER FISH, LABEO ROHITA EXPOSED TO INDOXACARB

Nagaraju Bantu, Ravi Kumar K, Venkatarathnamma Vakita

Abstract


Experimental fish were exposed to different concentrations of Indoxacarb for different hours, percent mortality was recorded. The 96 h LC50value of toxicant to the fish were found to be 0.0521 mg/L. Throughout the experimental period, the fish showed severe respiratory distress and rapid opercular movements leading to the higher amount of toxicant uptake, increased secretion of mucus higher ventilation volume, decrease in oxygen uptake efficiency, labored breathing and engulfing of air through the mouth  Behavioral patterns were observed in during exposure period, test organism showed normal behavior in control group but jerky movements, hyper secretion of mucus, opening and closing of mouth for gasping, losing scales, hyperactivity were observed experimental group.

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