Susceptibility of Anopheles stephensi against five current chemical insecticides

AUTHORS

Kourosh Azizi 1 , * , Abouzar Soltani 2 , Abbas Poudat 3 , Masoumeh Khodadadi 4 , Masoud Yaran 4 , Behrouz Hasanvand 4

1 Associate Professor Department of Medical Entomology, Shiraz University of Medical Sciences, Shiraz, Iran.

2 Instructor Department of Medical Entomology, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

3 Instructor Department of Medical Entomologyو Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

4 Students of Medical Entomology, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

How to Cite: Azizi K, Soltani A, Poudat A, Khodadadi M, Yaran M, et al. Susceptibility of Anopheles stephensi against five current chemical insecticides, Hormozgan Med J. 2011 ; 14(4):e88613.

ARTICLE INFORMATION

Hormozgan Medical Journal: 14 (4); e88613
Published Online: June 17, 2010
Article Type: Research Article
Received: February 05, 2010
Accepted: June 17, 2010

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Abstract

Introduction: Malaria is still an important health problem in southern Iran. Anopheles
stephensi is one of the most important vectors of malaria, especially in urban areas. Because
of long time of chemical insecticides against vectors in endemic areas and their potential
resistance to such chemicals, it is necessary that vectors continuously to be assessed against
susceptibility level. We aimed to investigate the susceptibility or resistance of Anopheles
stephensi against five in-used insecticides in Hormozgan province, 2008.
Methods: In this cross-sectional study, mosquitoes were captured from Minab districts.
Five chemical insecticides including DDT 4%, Fenithrothion 1%, Bendiocarb 0.1%,
Lambdacyhalothrin 0.05% and Deltamethrin 0.05% were assessed. Susceptibility tests were
achieved using WHO standard kits and standard Diagnostic doses impregnated papers. Data
were analysed using descriptive statistics.
Results: Anopheles stephensi (Minab strain) was susceptible to Bendiocarb and Deltamethrin
(100% mortality rate), however, it had some tolerance compared to others. Mortality rates to
DDT, Fenithrothion and Lambdacyhalothrin were 97%, 95% and 98%, respectively.
Conclusion: It seems that Deltamethrin and Bendiocarb are the best and most effective
chemical insecticides control Anopheles stephensi. It is better to use such insecticides in
the least effective dose and rotation.

Keywords

Anopheles Stephensi – Insecticides – Malaria

© 2011, Hormozgan Medical Journal. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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