J. Daaboub, A. Tabbabi, Ali Lamari, M. Feriani, C. Boubaker, H. B. Cheikh
{"title":"Levels of Insecticide Resistance to Temephos, and Associated Mechanisms in Culex pipiens Mosquitoes from Central Tunisia","authors":"J. Daaboub, A. Tabbabi, Ali Lamari, M. Feriani, C. Boubaker, H. B. Cheikh","doi":"10.5376/JMR.2017.07.0010","DOIUrl":null,"url":null,"abstract":"Five populations of Culex pipiens collected in central Tunisia were evaluated for their susceptibility to temephos. The resistance level was high for samples # 5 (>50-fold), and low, not exceeding 4-fold in the other resistant samples. LC 50 showed the susceptibility of sample # 2. The CYP450 enzyme was found related to temephos resistance in three samples. In fact, the addition of Pb to temephos bioassays completely suppressed the resistance in samples # 1 (RR 50 =0.84, p>0.05, RSR=3.0) and 5 (RR 50 =1.5, p>0.05, RSR=37.1). The temephos resistance level of sample # 3 decreased slightly (RR=1.9, p 75%) were recorded in the most susceptible samples. There is an urgent need to replace the insecticide temephos for continued control of Culex pipiens in Tunisia.","PeriodicalId":92079,"journal":{"name":"Journal of mosquito research","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2017-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of mosquito research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5376/JMR.2017.07.0010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
Five populations of Culex pipiens collected in central Tunisia were evaluated for their susceptibility to temephos. The resistance level was high for samples # 5 (>50-fold), and low, not exceeding 4-fold in the other resistant samples. LC 50 showed the susceptibility of sample # 2. The CYP450 enzyme was found related to temephos resistance in three samples. In fact, the addition of Pb to temephos bioassays completely suppressed the resistance in samples # 1 (RR 50 =0.84, p>0.05, RSR=3.0) and 5 (RR 50 =1.5, p>0.05, RSR=37.1). The temephos resistance level of sample # 3 decreased slightly (RR=1.9, p 75%) were recorded in the most susceptible samples. There is an urgent need to replace the insecticide temephos for continued control of Culex pipiens in Tunisia.