• Dnyaneshwar Sawairam Rathod

Abstract: In the present study, an attempt was made to examine the lethal and sublethal toxic effect of dimethoate on behavioural aspect of freshwater fish, Arius dussumieri. The LC50 value and sublethal concentration of dimethoate for 96 hour against the freshwater fish Arius dussumieri were 5.99 and 0.599 obtained respectively. For behavioural studies, laboratory acclimatized fishes were divided into three Sets of 10 fish per aquarium. Set ‘A’ used as control and where water was completely dechlorinated. Set ‘B’ and ‘C’ were exposed to lethal and sublethal concentration of dimethoate solution respectively. Visual observations were made after every 24 hours upto 96 hours. Further observation was made upto 60 days for the fish exposed to sublethal concentration of dimethoate. It has been found that test fish exhibit abnormal behaviour as compare to control Set. These behavioural responses were shown to serve as sensitive indicators of pesticide pollution in aquatic organisms

Key words: Pesticide, Arius dussumieri, LC50 Behavoiur

"Effect of Toxicity of Dimethoate on Behaviour of freshwater fish, Arius dussumieri", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.1337-1346, June-2019, Available :http://www.jetir.org/papers/JETIR1908D69.pdf

"Effect of Toxicity of Dimethoate on Behaviour of freshwater fish, Arius dussumieri", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp1337-1346, June-2019, Available at : http://www.jetir.org/papers/JETIR1908D69.pdf