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Azizi, Kourosh, Soltani, Aboozar, Ali Amiri, Shokat, Fakoor Ziba, Mohammad Reza, Moemenbellah-Fard, Mohammad Djaefar. (1397). Laboratory and semi-field evaluations on lethal and residual effects of temephos and pyriproxyfen insecticides to control malaria mosquito larvae, Anopheles stephensi Liston. سامانه مدیریت نشریات علمی, 7(1), 40-47. doi: 10.30476/jhsss.2020.85116.1059
Kourosh Azizi; Aboozar Soltani; Shokat Ali Amiri; Mohammad Reza Fakoor Ziba; Mohammad Djaefar Moemenbellah-Fard. "Laboratory and semi-field evaluations on lethal and residual effects of temephos and pyriproxyfen insecticides to control malaria mosquito larvae, Anopheles stephensi Liston". سامانه مدیریت نشریات علمی, 7, 1, 1397, 40-47. doi: 10.30476/jhsss.2020.85116.1059
Azizi, Kourosh, Soltani, Aboozar, Ali Amiri, Shokat, Fakoor Ziba, Mohammad Reza, Moemenbellah-Fard, Mohammad Djaefar. (1397). 'Laboratory and semi-field evaluations on lethal and residual effects of temephos and pyriproxyfen insecticides to control malaria mosquito larvae, Anopheles stephensi Liston', سامانه مدیریت نشریات علمی, 7(1), pp. 40-47. doi: 10.30476/jhsss.2020.85116.1059
Azizi, Kourosh, Soltani, Aboozar, Ali Amiri, Shokat, Fakoor Ziba, Mohammad Reza, Moemenbellah-Fard, Mohammad Djaefar. Laboratory and semi-field evaluations on lethal and residual effects of temephos and pyriproxyfen insecticides to control malaria mosquito larvae, Anopheles stephensi Liston. سامانه مدیریت نشریات علمی, 1397; 7(1): 40-47. doi: 10.30476/jhsss.2020.85116.1059

Laboratory and semi-field evaluations on lethal and residual effects of temephos and pyriproxyfen insecticides to control malaria mosquito larvae, Anopheles stephensi Liston

Journal of Health Sciences & Surveillance System
مقاله 7، دوره 7، شماره 1، فروردین 2019، صفحه 40-47    اصل مقاله (1.44 M)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.30476/jhsss.2020.85116.1059
نویسندگان
Kourosh Azizi1؛ Aboozar Soltani2؛ Shokat Ali Amiri3؛ Mohammad Reza Fakoor Ziba3؛ Mohammad Djaefar Moemenbellah-Fard* 4
1Department of Medical Entomology, Research Center for Health Sciences, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran; 2Student Research Committee,
2Research Centre for Health Sciences, Institute of Health, Department of Medical Entomology and Vector Control, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
3Department of Medical Entomology and Vector Control, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
4Department of Medical Entomology and Vector Control, Research Centre for Health Sciences, School of Health, Shiraz University of Medical Sciences, P.O. Box 71645-111, Shiraz, Iran
چکیده
Background: The application of insecticides against vector mosquito larvae is a crucial step to control human malaria. Insecticide resistance is a major impediment to vector control strategies. The main aim of this study was to conduct laboratory and semi-field evaluations on lethal and residual effects of temephos and pyriproxyfen insecticides against malaria mosquito larvae, Anopheles stephensi.
Methods: Both susceptibility test and residual bioassay were performed to assess the lethal concentrations of each insecticide on 50% (LC50) of the IV instars larval populations and their activity periods according to standard protocols of WHO. Nine and eleven different concentrations with two sets of control in each case were applied for temephos and pyriproxyfen, respectively. Data were analyzed using probit analysis and SPSS software.
Results: The LC50 and LC90 for temephos and pyriproxyfen under laboratory conditions were 0.4 and 0.63, and 1.69 × 10-4 and 4.036 × 10-4 ppm, respectively. Although the field strain of An. stephensi larvae was completely susceptible to pyriproxyfen, there was noticeable resistance (8% mortality at the diagnostic dose) to temephos in Nikshahr County, Southeast Iran. This is the first report of resistance to temephos for this malaria main vector in Iran. Depending on the applied variable doses, the residual effects of temephos and pyriproxyfen under semi-field conditions lasted maximally for 3 and 10 weeks, respectively.
Conclusion: The high lethal and residual effects of pyriproxyfen on mosquito larvae confer an unprecedented opportunity in vector control operations leading to elimination of malaria in Iran.
کلیدواژه‌ها
Anopheles stephensi؛ Pyriproxyfen؛ Insect Growth Regulator؛ Temephos؛ Insecticide Resistance
مراجع
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