ENHANCED ACTIVATION IS THE MECHANISM OF NEGATIVE CROSS-RESISTANCE TO CHLORPYRIFOS IN THE DICOFOL-IR STRAIN OF TETRANYCHUS-URTICAE (ACARI, TETRANYCHIDAE)

被引:8
|
作者
HATANO, R
SCOTT, JG
DENNEHY, TJ
机构
[1] CORNELL UNIV,DEPT ENTOMOL,COMSTOCK HALL,ITHACA,NY 14853
[2] NIPPON SODA CO LTD,ODAWARA RES CTR,TAKADA,ODAWARA 25002,JAPAN
关键词
ARACHNIDA; TETRANYCHUS-URTICAE; MONOOXYGENASE; CHLORPYRIFOS METABOLISM;
D O I
10.1093/jee/85.4.1088
中图分类号
Q96 [昆虫学];
学科分类号
摘要
The mechanism responsible for negative cross-resistance to chlorpyrifos was examined in isogenic dicofol susceptible (Orchard-12) and resistant (Dicofol-IR) two-spotted spider mites, Tetranychus urticae Koch. The acetylcholinesterase of both strains was equally sensitive to inhibition by chlorpyrifos oxon. However, the Dicofol-IR strain showed increased oxidative activation of chlorpyrifos to chlorpyrifos oxon relative to the Orchard-12 strain, suggesting this mechanism is responsible for the observed negative cross-resistance.
引用
收藏
页码:1088 / 1091
页数:4
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