Determination of selection for resistance to spirodiclofen and its effect on detoxification enzymes in Tetranychus urticae
Author of the article:LI ZhongZhou**ZHOU YuShu***PIAO JingZiTIAN RuHaiGAO Ping
Author's Workplace:Plant Protection College, Shenyang Agricultural University, Shenyang110866, China
Key Words:Tetranychus urticae, spirodiclofen, resistance, activity of detoxifying enzymes, acaricides
Abstract:Selection of the twospotted spider mite (Tetranychus urtica Koch) for resistance to spirodiclofen and its effect on detoxification enzymes were investigated. After 35 generations of continuous selection, resistance to spirodiclofen was > 834 that of the original susceptible strain. Odemethlyase activity of the F35 generation was significantly higher than that of the F0 generation. There was, however, no obvious difference in glutathione Stransferase or carboxy lesterase activity between the resistant and susceptible strains. We conclude that the resistance of T. urticae to spirodiclofen is related to enhancement of Odemethlyase activity.