Objective:To understand the insecticide resistance status of Culex quinquefasciatus Say(Diptera: Culicidae)(Cx.Quinquefasciatus) to deltamethrin,cyfluthrin,permethrin,lambdacyhalothrin, DDT and malathion in filari...Objective:To understand the insecticide resistance status of Culex quinquefasciatus Say(Diptera: Culicidae)(Cx.Quinquefasciatus) to deltamethrin,cyfluthrin,permethrin,lambdacyhalothrin, DDT and malathion in filarial endemic areas of Uttar Pradesh,India.Methods:Insecticide susceptibility assays were performed on wild-caught adult female Cx.quinquefasciatus mosquitoes to deltamethrin(0.05%),cyfluthrin(0.15%),permethrin(0.75%),lambdacyhalothrin (0.05%),malathion(5.0%) and DDT(4.0%),the discriminating doses recommended by the World Health Organisation(WHO).Results:The data showed that Cx.quinquefasciatus is highly resistant to DDT and malathion;the mortality was 28.33%and 27.5%,respectively and incipient resistance to synthetic pyrethroids(deltamethrin,cyfluthrin,permethrin,and lambdacyhalothrin), where mortality ranged from 95.83%in permethrin to 98.33%in cyfluthrin and lambdacyhalothrin. Knockdown times(KDT<sub>50</sub>) in response to synthetic pyrethroids varied significantly between different insecticides(P【0.01) from 31.480 min for permethrin to 21.650 for cyfluthrin. Conclusions:The results presents here provide the status report of the insecticide resistance/ susceptibility of Cx.quinquefasciatus in major filaria endemic areas of northern India.展开更多
Dear Editor,Dengue infection is one of the emerging concerns for public health on a global scale.Over the past few years,dengue transmission has increased in the Americas,the western Pacific and southeast Asia.The mag...Dear Editor,Dengue infection is one of the emerging concerns for public health on a global scale.Over the past few years,dengue transmission has increased in the Americas,the western Pacific and southeast Asia.The magnitude,distribution,and clinical severity of dengue outbreaks have been an alarming signal in the southeast Asia region.Major outbreaks have been reported in countries in展开更多
文摘Objective:To understand the insecticide resistance status of Culex quinquefasciatus Say(Diptera: Culicidae)(Cx.Quinquefasciatus) to deltamethrin,cyfluthrin,permethrin,lambdacyhalothrin, DDT and malathion in filarial endemic areas of Uttar Pradesh,India.Methods:Insecticide susceptibility assays were performed on wild-caught adult female Cx.quinquefasciatus mosquitoes to deltamethrin(0.05%),cyfluthrin(0.15%),permethrin(0.75%),lambdacyhalothrin (0.05%),malathion(5.0%) and DDT(4.0%),the discriminating doses recommended by the World Health Organisation(WHO).Results:The data showed that Cx.quinquefasciatus is highly resistant to DDT and malathion;the mortality was 28.33%and 27.5%,respectively and incipient resistance to synthetic pyrethroids(deltamethrin,cyfluthrin,permethrin,and lambdacyhalothrin), where mortality ranged from 95.83%in permethrin to 98.33%in cyfluthrin and lambdacyhalothrin. Knockdown times(KDT<sub>50</sub>) in response to synthetic pyrethroids varied significantly between different insecticides(P【0.01) from 31.480 min for permethrin to 21.650 for cyfluthrin. Conclusions:The results presents here provide the status report of the insecticide resistance/ susceptibility of Cx.quinquefasciatus in major filaria endemic areas of northern India.
基金partial financial support from Indian Council of Medical Research(ICMR),Delhi during the course of this study
文摘Dear Editor,Dengue infection is one of the emerging concerns for public health on a global scale.Over the past few years,dengue transmission has increased in the Americas,the western Pacific and southeast Asia.The magnitude,distribution,and clinical severity of dengue outbreaks have been an alarming signal in the southeast Asia region.Major outbreaks have been reported in countries in