Status of Resistant and Knockdown of West Nile Vector, Culex pipiens Complex to Different Pesticides in Iran
Background: West Nile virus (WNV) can cause a fatal disease in humans and it is mainly transmitted to people through the bites of infected mosquitoes. Vector control using insecticides is a very important goal. Study of Culex pipiens resistance towards several insecticides in the city of Tehran, Ir...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Tehran University of Medical Sciences
2019-08-01
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| Series: | Journal of Arthropod-Borne Diseases |
| Subjects: | |
| Online Access: | https://jad.tums.ac.ir/index.php/jad/article/view/1178 |
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| author | Sara Rahimi Hassan Vatandoost Mohammad Reza Abai Ahmad Raeisi Ahmad Ali Hanafi-Bojd |
| author_facet | Sara Rahimi Hassan Vatandoost Mohammad Reza Abai Ahmad Raeisi Ahmad Ali Hanafi-Bojd |
| author_sort | Sara Rahimi |
| collection | DOAJ |
| description | Background: West Nile virus (WNV) can cause a fatal disease in humans and it is mainly transmitted to people through the bites of infected mosquitoes. Vector control using insecticides is a very important goal. Study of Culex pipiens resistance towards several insecticides in the city of Tehran, Iran was evaluated.
Methods: Adult females reared from field-caught larvae from southern part of Tehran and lab strain reared in the insectary of Tehran University of Medical Science were determined for resistant status by exposing to 4% DDT, 0.1% bendiocarb, 0.1% propoxur, 1% fenitrothion, 0.05% deltamethrin, 0.75% permethrin, 0.05% lambda-cyhalothrin, 0.5% etofenprox, 5% malathion and 0.15% cyfluthrin papers using the standard WHO susceptibility tests.
Results: Results clearly showed resistance development of Cx. pipiens against tested insecticides. Mortalities of Cx. pipiens were less than 90% with high resistance, low knock down rate and knock down time (50%) observed against insecticides. DDT and Malathion showed the most and least lethal time (LT50) values for the field strain. The results of the knockdown test showed that DDT and deltamethrin had the most and least knockdown times (50%) for the field strain, respectively, while DDT and lambda-cyhalothrin had the most and least knockdown times (50%) for the lab strain, respectively.
Conclusion: Resistance to mentioned insecticides in Cx. pipiens is widely distributed in southern part of Tehran. Regular implementation of susceptibility test in Cx. pipiens mosquitoes will help local public health authorities to develop new and better control strategies. |
| first_indexed | 2024-12-13T12:18:50Z |
| format | Article |
| id | doaj.art-80afd3e536444bd681141f53a118a577 |
| institution | Directory Open Access Journal |
| issn | 1735-7179 2322-2271 |
| language | English |
| last_indexed | 2024-12-13T12:18:50Z |
| publishDate | 2019-08-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | Journal of Arthropod-Borne Diseases |
| spelling | doaj.art-80afd3e536444bd681141f53a118a5772022-12-21T23:46:38ZengTehran University of Medical SciencesJournal of Arthropod-Borne Diseases1735-71792322-22712019-08-0113310.18502/jad.v13i3.15381178Status of Resistant and Knockdown of West Nile Vector, Culex pipiens Complex to Different Pesticides in IranSara Rahimi0Hassan Vatandoost1Mohammad Reza Abai2Ahmad Raeisi3Ahmad Ali Hanafi-Bojd4Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, IranDepartment of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Department of Environmental Chemical Pollutants and Pesticides, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, IranDepartment of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Department of Environmental Chemical Pollutants and Pesticides, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, IranNational Program Manager for Malaria Control, Center for Communicable Diseases, Ministry of Health and Medical Education, Tehran, IranDepartment of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Department of Environmental Chemical Pollutants and Pesticides, Institute for Environmental Re-search, Tehran University of Medical Sciences, Tehran, IranBackground: West Nile virus (WNV) can cause a fatal disease in humans and it is mainly transmitted to people through the bites of infected mosquitoes. Vector control using insecticides is a very important goal. Study of Culex pipiens resistance towards several insecticides in the city of Tehran, Iran was evaluated. Methods: Adult females reared from field-caught larvae from southern part of Tehran and lab strain reared in the insectary of Tehran University of Medical Science were determined for resistant status by exposing to 4% DDT, 0.1% bendiocarb, 0.1% propoxur, 1% fenitrothion, 0.05% deltamethrin, 0.75% permethrin, 0.05% lambda-cyhalothrin, 0.5% etofenprox, 5% malathion and 0.15% cyfluthrin papers using the standard WHO susceptibility tests. Results: Results clearly showed resistance development of Cx. pipiens against tested insecticides. Mortalities of Cx. pipiens were less than 90% with high resistance, low knock down rate and knock down time (50%) observed against insecticides. DDT and Malathion showed the most and least lethal time (LT50) values for the field strain. The results of the knockdown test showed that DDT and deltamethrin had the most and least knockdown times (50%) for the field strain, respectively, while DDT and lambda-cyhalothrin had the most and least knockdown times (50%) for the lab strain, respectively. Conclusion: Resistance to mentioned insecticides in Cx. pipiens is widely distributed in southern part of Tehran. Regular implementation of susceptibility test in Cx. pipiens mosquitoes will help local public health authorities to develop new and better control strategies.https://jad.tums.ac.ir/index.php/jad/article/view/1178Resistance; Culex pipiens; West nile; Insecticide; Iran |
| spellingShingle | Sara Rahimi Hassan Vatandoost Mohammad Reza Abai Ahmad Raeisi Ahmad Ali Hanafi-Bojd Status of Resistant and Knockdown of West Nile Vector, Culex pipiens Complex to Different Pesticides in Iran Journal of Arthropod-Borne Diseases Resistance; Culex pipiens; West nile; Insecticide; Iran |
| title | Status of Resistant and Knockdown of West Nile Vector, Culex pipiens Complex to Different Pesticides in Iran |
| title_full | Status of Resistant and Knockdown of West Nile Vector, Culex pipiens Complex to Different Pesticides in Iran |
| title_fullStr | Status of Resistant and Knockdown of West Nile Vector, Culex pipiens Complex to Different Pesticides in Iran |
| title_full_unstemmed | Status of Resistant and Knockdown of West Nile Vector, Culex pipiens Complex to Different Pesticides in Iran |
| title_short | Status of Resistant and Knockdown of West Nile Vector, Culex pipiens Complex to Different Pesticides in Iran |
| title_sort | status of resistant and knockdown of west nile vector culex pipiens complex to different pesticides in iran |
| topic | Resistance; Culex pipiens; West nile; Insecticide; Iran |
| url | https://jad.tums.ac.ir/index.php/jad/article/view/1178 |
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