Comparative susceptibility of two Japanese encephalitis vectors from Mysore to six insecticides.
No Thumbnail Available
Date
1993-09-01
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Larval populations of Culex tritaeniorhynchus and C. fuscocephala from Mysore city were tested for their susceptibility against two pyrethroids viz., cypermethrin and deltamethrin and four organophosphorus (OP) compounds viz., fenthion, fenitrothion, temephos and malathion. The investigations revealed that, among the pesticides tested, efficacy of pyrethroids was very high as compared to OP compounds. C. tritaeniorhynchus was found to be highly tolerant to all the insecticides used. It registered 4.0, 6.5, 17.0, 6.5, 14.0 and 1.5 times more tolerance than C. fuscocephala to cypermethrin, deltamethrin, fenthion, fenitrothion, temephos and malathion respectively in terms of the LC50 value. Further studies are needed to determine the development of resistance if any, by C. tritaeniorhynchus, an important JE vector in Karnataka.
Description
Keywords
Citation
Vijayan VA, Revanna MA, Vasudeva KS, Pushpalatha N, Poornima . Comparative susceptibility of two Japanese encephalitis vectors from Mysore to six insecticides. Indian Journal of Medical Research. 1993 Sep; 97(): 215-7