title: Preliminary evaluation of the acute toxicity of cypermethrin and lambda-cyhalothrin to Channa Punctatus.
abstract: In the present study, the acute toxicity of the pyrethroid pesticides, cypermethrin and lambda-cyhalothrin was conducted for a 96 h period using Channa punctatus. The LC(50) values of cypermethrin and lambda-cyhalothrin were found to be 0.4 mg/L and 7.92 mug/L, respectively. The lambda-cyhalothrin was found to be about 50 times more toxic to the fish than cypermethrin. The behavioral pattern of C. punctatus got severely altered in each group due to pesticide treatment. The results suggested that even at low concentrations, these pyrethroid compounds may exert toxic effects, markedly modifying their behavioral pattern.
authors.affiliation: Department of Zoology, University of Allahabad, Allahabad 211002, India.
authors.forename: Amit
authors.initials: A
authors.lastname: Kumar
authors.forename: Bechan
authors.initials: B
authors.lastname: Sharma
authors.forename: Ravi Shankar
authors.initials: RS
authors.lastname: Pandey
mesh_terms: D000818:Animals; D004305:Dose-Response Relationship, Drug; D005399:Fishes / Q000502:physiology*; D007306:Insecticides / Q000633:toxicity*; D007928:Lethal Dose 50; D009570:Nitriles / Q000633:toxicity*; D011722:Pyrethrins / Q000633:toxicity*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; D014874:Water Pollutants, Chemical; C017160:cypermethrin; C037304:cyhalothrin