Insecticide Resistance In T. castaneum (H.) and R. dominica (F.)

Synthetic insecticides have been the major control method of insect pests since 1950s. The widespread and unwise use of insecticides has resulted in the development of insect strains that are resistant to insecticides. The level of insecticide resistance was evaluated in two economically important stored grain pests, Tribolium castaneum (Herbst) and Rhyzopertha dominica (Fabricius) in the present study. Resistance level was checked against one organophosphate and four pyrethroid insecticides by using filter paper method and residual film method. Mortality was recorded after 48 hours of treatment. Resistant insects were identified on the basis of their LC50 values. T. castaneum (H.) appeared to be more resistant as compared to R. dominica (F.). Results indicated that deltamethrin 2.5% SC was more toxic of all test insecticides while DDVP 50% EC was least toxic.

Autorentext

Abida Abdul Sattar has done BS Hons. and MS in Zoology from LCWU, Lahore. She is an active member of Zoological Society LCWU. Her specific areas of research are insecticidal efficacy against stored grain pests. Dr. Farkhanda Manzoor has done MSc. (Zoology), PhD and Post doctorate (Entomolgy) from Ohio State University, US. She has 45 publications.