lethal and residual effects of lambdacyhalothrin, deltamethrin and cyfluthrin insecticides on adult mosquitoes of anopheles stephensi liston (diptera: culicidae) on different surfaces
نویسندگان
چکیده
background: human malaria remains a major malady in eastern iran. vector control interventions such as indoor residual spraying are used to fight with the disease. this study was undertaken to determine the lethal and residual effects of three different pyrethroid insecticides on adult mosquitoes of anopheles stephensi on different surfaces in iran, as part of a national program to monitor insecticide resistance in endemic areas. methods: two main endemic foci were selected as collection sites. wild adult females of an. stephensi (mysoriensis strain) from the first focus were subjected to standard susceptibility tests, using lambdacyhalothrin, deltamethrin and cyfluthrin insecticides within holding tubes according to the method proposed by who. in kazerun, the residual effects of these compounds were examined by conical bioassay tests of an. stephensi (type strain) on plaster and cement walls. data were analyzed using mann-whitney test to determine the differences in susceptibility and residual effects of an. stephensi mosquitoes to these insecticides. results: the susceptibility of females of an. stephensi to three concentrations of lambdacyhalothrin, deltamethrin and cyfluthrin insecticides culminated in full scale mortality at the highest diagnostic dose. the maximal residual time of these three insecticides on plaster and cement walls was estimated to be about three months. there was no significant difference in the mortalities of an. stephensi on different sprayed surfaces (p=0.653). conclusion: all field-collected an. stephensi populations exhibit gross susceptibility to all diagnostic doses of the three evaluated insecticides. in endemic areas, lambdacyhalothrin reveals a slightly longer residual activity than the other two insecticides.
منابع مشابه
Designing of a laboratory model for evaluation of the residual effects of deltamethrin (K-othrine WP 5%) on different surfaces against malaria vector, Anopheles stephensi (diptera: culicidae).
BACKGROUND & OBJECTIVES Deltamethrin plays an important role in controlling malaria vectors, and is used in indoor residual spraying and manufacture of long-lasting insecticidal mosquito nets. The residual activity of deltamethrin (K-othrine WP 5%) @ 25 mg/m(2) was studied in laboratory conditions on different surfaces. METHODS The surfaces were made artificially with different building mater...
متن کاملEfficacy of Melia azedarach L. extract on the malarial vector Anopheles stephensi Liston (Diptera: Culicidae).
Methanolic extracts of leaves and seeds from the chinaberry tree, Melia azedarach L. (Meliaceae) was tested against mature and immature mosquito vector Anopheles stephensi Liston (Diptera) under laboratory condition. The extract showed strong larvicidal, pupicidal, adulticidal, antiovipositional activity, repellency and biting deterency. The M. azedarach seed and leaf extracts were used to dete...
متن کاملLarvicidal and repellent potential of Moringa oleifera against malarial vector, Anopheles stephensi Liston (Insecta: Diptera: Culicidae).
OBJECTIVE To evaluate the larvicidal and pupicidal potential of the methanolic extracts from Moringa oleifera (M. oleifera) plant seeds against malarial vector Anopheles stephensi (A. stephensi) mosquitoes at different concentrations (20, 40, 60, 80 and 100 ppm). METHODS M. oleifera was collected from the area of around Bharathiar University, Coimbatore. The dried plant materials were powdere...
متن کاملCurrent Susceptibility Status of Anopheles stephensi (Diptera: Culicidae) to Different Imagicides in a Malarious Area, Southeastern of Iran
BACKGROUND Anopheles 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 Anopheles stephensi to different imagicides collected from malarious area in Chabahar city, Iran. METHODS In the present study seven insecticides including: DDT 4%, lambdacyhalothrin 0.05%, deltamethrin...
متن کاملResidual Effects of Deltamethrin WG 25% as a New Formulation on Different Surfaces against Anopheles stephensi, in Southeastern Iran
BACKGROUND Indoor residual spraying (IRS) is functioned as national interventions against malaria in southeastern foci of Iran and deltamethrin WP one of the insecticides have been used since past decade. In this study, the residual activity of the wettable granule (WG) was studied on different surfaces in hut scale trial against Anopheles stephensi in Iranshahr District, southeastern Iran. M...
متن کاملthe effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
journal of health sciences and surveillance systemجلد ۲، شماره ۱، صفحات ۳۰-۰
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023