Stage-Specific Expression of Resistance to Different Acaricides in Four Field Populations of Tetranychus urticae (Acari: Tetranychidae)

摘要: The two-spotted spider mite, Tetranychus urticae Koch, is a worldwide crop pest. resistance to commonly applied acaricides (in this report, "acaricide" refers both and insecticides that are toxic mites) has seriously impaired T. control in the field. Here, sensitivity of eggs, larvae, adults laboratory field populations various was investigated. Based on data obtained with an acaricide-sensitive strain collected 2009, abamectin most tested acaricides. For each acaricide, susceptibility greatest for least adults, intermediate eggs. egg sensitive stage abamectin, bifenazate, hexythiazox; larva hexythiazox, propargite, chlorfenapyr; adult chlorfenapyr. results strain, were selected test against four from Beijing, China. Although differed their bioassays, bifenazate highly resistant abamectin. Field trials China, should be conducted other rather than