Paper Contents
Abstract
ABSTRACT: In India, pesticides constitute an important component in agriculture development and protection of public health since the tropical climate is very conducive to pest breeding. Contamination by pesticides in aquatic ecosystem is a serious problem and fishes are more frequently exposed to these pollutants and may taken in through gills, skin and contaminated foods. Chlorpyrifos is a widely used organophosphate pesticide, second largest selling in India and used for more than a decade to control pests on cotton, paddy field, pasture and vegetable crops. Aquatic contamination of pesticides causes acute and chronic poisoning in fish and other organisms directly or indirect via food chain. A bioassay experiment was carried out to determine the acute toxicity of chlorpyrisfos (Commando 20% EC) on freshwater Channa punctatus for different time interval viz; 24h, 48h, 72h and 96h. The LC50 were determined by the probit analysis method using Finneys table. The 96 h LC50 values was found 6.27lL. The present study was aimed to determine the acute toxicity of chlorpyrifos and its effect on the behavior of Channa punctatus. During experiment fish show erratic and jerky movement. It is observe that the fish show decrease opercular movement, increase surface air gulping and decrease resting time, respiratory trouble and excess secretion of mucous from all over the body and gills. The behavioral changes observed in chlorpyrifos induced Channa punctatus indicate that this pesticide is toxic and are highly sensitive to this chemical.
Copyright
Copyright © 2025 PAWAN KUMAR CHAUDHARI. This is an open access article distributed under the Creative Commons Attribution License.
