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dc.creatorRosalìa Servìn Villegas-
dc.creatorJosé Luís García Hernández-
dc.creatorBernardo Murillo Amador-
dc.creatorArmando Tejas-
dc.creatorJosé Luis Martínez Carrillo-
dc.descriptionThe silverleaf whitefly is a major pest of more than 500 vegetable species. This insect transmits extremely damaging plant viruses, and feeding by nymphs and adults induce a systemic, irregular ripening disorder. In 1993, a large, genetically diverse pool of this species was collected from cabbage Brassica oleracea L., tomato Lycopersicon esculentum L., hot pepper Capsicum annuum L., cantaloupe Cucumis melo L., and watermelon Citrullus vulgaris L. A proportion of the mixed original population has been m aintained free of selection pressure to attenuate the resistance processes. Susceptibility of the original freedom from selection pressure population has been evaluated in 1994, 1995, and 2002. Collections of new field strains of silverleaf whitefly were also done twice in 1994, and once in 1996. Each time, colonies of both strains (from field, and free of 50 95 selection pressure) were established in the laboratory. Mortality (LC and LC ), and resistance ratios with common insecticides methamidophos, methyl parathion, cypermethrin, and endosulfan were evaluated. Not all the field populations were resistant. The highest resistance ratios for endosulfan, methamidophos, cypermethrin, and methyl parathion were: 68x, 22x, 9.5x, and 4.5x 50 respectively. The highest resistance level was found to endosulfan with a LC value of 1034.6 mg/ml.-
dc.publisherSociedad Mexicana de Entomología, A.C.-
dc.rightsFolia Entomológica Mexicana-
dc.sourceFolia Entomológica Mexicana (México) Num.1 Vol.45-
dc.subjectBemisia argentifolii-
dc.subjectinsecticide resistance-
dc.subjectselection pressure-
dc.titleStability of insecticide resistance of silverleaf whitefly (homoptera: aleyrodidae) in the absence of selection pressure-
dc.typeArtículo científico-
Aparece en las Colecciones:Folia Entomológica Mexicana

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