Current Susceptibility Status of Anopheles stephensi (Diptera: Culicidae) to Different Imagicides in a Malarious Area, Southeastern of Iran

• Published in: Journal of Arthropod-Borne Diseases Vol. 10; no. 4; pp. 493 - 500
• Main Authors: Gorouhi, Mohammad Amin, Vatandoost, Hassan, Oshaghi, Mohammad Ali, Raeisi, Ahmad, Enayati, Ahmad Ali, Mirhendi, Hossein, Hanafi-Bojd, Ahmad Ali, Abai, Mohammad Reza, Salim-Abadi, Yaser, Rafi, Fatemeh
• Format: Journal Article
• Language: English
• Published: Iran Tehran University of Medical Sciences 01-12-2016
• Subjects: Anopheles stephensi; Chabahar; Insecticides; Malaria; Mortality; Mosquitoes; Original; Pyrethroid resistance; Susceptibility test; Tropical diseases; Iran; Chabahar; Anopheles stephensi; Pyrethroid resistance; Susceptibility test
• ISSN: 2322-1984; 1735-7179; 2322-2271

mosquitoes are an important group of arthropods due to their role in transmission of malaria. The present study was conducted for determination of susceptibility status of
to different imagicides collected from malarious area in Chabahar city, Iran.
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 (LT
and LT
) values were calculated.
The susceptibility levels of field strain of
to 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 that
is resistant to DDT, lambdacyhalothrin and cyfluthrin, and susceptible to etofenprox and permethrin and candidate of resistant to deltamethrin based on WHO criteria.
Our findings indicated that
is 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.