Biochemical Basis of Cyfluthrin and DDT Resistance in Anopheles stephensi (Diptera: Culicidae) in Malarious Area of Iran

• Published in: Journal of Arthropod-Borne Diseases Vol. 12; no. 3; pp. 310 - 320
• Main Authors: Gorouhi, Mohammad Amin, Oshaghi, Mohammad Ali, Vatandoost, Hassan, Enayati, Ahmad Ali, Raeisi, Ahmad, Abai, Mohamad Reza, Salim-Abadie, Yaser, Hanafi-Bojd, Ahmad Ali, Paksa, Azim, Nikpoor, Fatemeh
• Format: Journal Article
• Language: English
• Published: Iran Tehran University of Medical Sciences 01-09-2018
• Subjects: Anopheles stephensi; Biochemistry; Cytochrome; Enzymes; Insecticide; Insecticides; Laboratories; Malaria; Metabolism; Mosquitoes; Original; Public health; Resistance mechanisms; Iran; Anopheles stephensi; Insecticide; Malaria; Resistance mechanisms
• ISSN: 2322-1984; 1735-7179; 2322-2271
• DOI: 10.18502/jad.v12i3.82

is a key urban malaria vector in the Indian subcontinent and Middle East including south and southeast of Iran. Wide application of insecticides resulted in resistance of this species to various insecticides in these regions. This study was conducted to reveal the role of metabolic mechanisms in the development of resistance in
to DDT and cyfluthrin.
Field mosquito specimens were collected from Chabahar Seaport, southeast corner of Iran, in 2015. Insecticide susceptibility and enzyme assays were conducted as recommended by WHO.
Mean enzyme ratios were 3.95 and 3.04 for α- esterases and 2.40 and 1.97 for β- esterases in the DDT and cyfluthrin- resistant populations correspondingly compared with the susceptible strain. The GSTs enzyme mean activity ratios were 5.07 and 2.55 in the DDT and cyfluthrin- resistant populations compared with the susceptible beech strain. The cytochrome p450s enzyme ratios were 1.11 and 1.28 in the DDT and cyfluthrin- resistant populations respectively compared with the susceptible beech strain.
Metabolic mechanisms play a crucial role in the development of DDT and cyfluthrin resistance in
, therefore, further evaluation of the mechanisms involved as well as implementation of proper insecticide resistance management strategies are recommended.