Por favor utiliza este link para citar o compartir este documento: http://repositoriodigital.academica.mx/jspui/handle/987654321/368072
Título: Stability of insecticide resistance of silverleaf whitefly (homoptera: aleyrodidae) in the absence of selection pressure
Palabras clave: Biología
Bemisia argentifolii
insecticide resistance
selection pressure
Editorial: Sociedad Mexicana de Entomología, A.C.
Descripción: The 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.
Other Identifiers: http://www.redalyc.org/articulo.oa?id=42445104
Aparece en las Colecciones:Folia Entomológica Mexicana

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