Susceptibility of culex quinquefasciatus (Diptera: Culicidae) to deltamethrin in District Sargodha

Present study was conducted to determine the resistance status of culex quanquefasciatus to deltamethrin (0.5%) in district sargodha. only blood fed female mosquitoes were sampled for the study and subjected to residual bioassay test. the mortality rate was 100% after 24 hours of deltamethrin (0.5%) exposure. results of residual bioassays revealed that population of culex quanquefasciatus in study area is susceptible to recommended dose of deltamethrin (0.5%). calculated lt50 was 6.38 hours. non-significant difference was observed in the activities of estrases,monooxegenases and glutathione-s-transferases (gsts) in control and treated groups of c. quinquefasciatus. it is concluded that mosquito population in the study area is not resistant to the recommended dose of deltamethrin. © copyright 2014 zoological society of pakistan.