title: Current Susceptibility Status ofAnopheles stephensi(Diptera: Culicidae) to Different Imagicides in a Malarious Area, Southeastern of Iran.
abstract: BACKGROUND
  Anophelesmosquitoes are an important group of arthropods due to their role in transmission of malaria. The present study was conducted for determination of susceptibility status ofAnopheles stephensito different imagicides collected from malarious area in Chabahar city, Iran.
  
  
  METHODS
  In the present study seven insecticides including: DDT 4%, lambdacyhalothrin 0.05%, deltamethrin 0.05%, permethrin 0.75%, cyfluthrin 0.15% and etofenprox 0.5% were tested based on WHO method. Regression line was plotted for each insecticide using mortality of different exposure times. Bioassay data were analyzed using Probit software and the lethal time for 50% and 90% mortality (LT50and LT90) values were calculated.
  
  
  RESULTS
  The susceptibility levels of field strain ofAn. stephensito the discriminative dose of different imagicides were determined 100, 98, 96, 89, 82 and 62% for etofenprox, permethrin, deltamethrin, lambdacyhalothrin, cyfluthrin and DDT, respectively. Our finding indicated thatAn. stephensiis resistant to DDT, lambdacyhalothrin and cyfluthrin, and susceptible to etofenprox and permethrin and candidate of resistant to deltamethrin based on WHO criteria.
  
  
  CONCLUSIONS
  Our findings indicated thatAn. stephensiis resistant to DDT and some pyrethroid insecticides which can be developed due to application of insecticides in health and agriculture. These results can provide a clue for future chemical control program in the study area.
authors.affiliation: Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad Amin
authors.initials: MA
authors.lastname: Gorouhi
authors.affiliation: Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Hassan
authors.initials: H
authors.lastname: Vatandoost
authors.affiliation: Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad Ali
authors.initials: MA
authors.lastname: Oshaghi
authors.affiliation: National Malaria Control Department, CDC, Ministry of Health and Medical Education, Iran.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Raeisi
authors.affiliation: School of Public Health and Health Sciences Research Centre, Mazandaran University of Medical Sciences, Sari, Iran.
authors.forename: Ahmad Ali
authors.initials: AA
authors.lastname: Enayati
authors.affiliation: Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Mirhendi
authors.affiliation: Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Ahmad Ali
authors.initials: AA
authors.lastname: Hanafi-Bojd
authors.affiliation: Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Abai
authors.affiliation: Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; School of Health, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
authors.forename: Yaser
authors.initials: Y
authors.lastname: Salim-Abadi
authors.affiliation: Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Rafi
keywords: Anopheles stephensi; Chabahar; Pyrethroid resistance; Susceptibility test