摘要
对室内筛选褐飞虱NilaparvatalugensSt l对马拉硫磷抗性及羧酸酯酶、乙酰胆碱酯酶的连续变化进行了研究。结果表明 ,抗性发展在不同世代之间存在一定的变化。LD50 的最大变化发生在第 3代和第 5代之间。在筛选的前 5代 ,羧酸酯酶活性上升与马拉硫磷抗性变化存在很好的相关性 ,而乙酰胆碱酯酶敏感性在第 6代和第 8代间的变化与抗性发展存在很好的相关性。可见 ,羧酸酯酶活性的上升在抗性发展的早期阶段起重要作用 ,而乙酰胆碱酯酶不敏感在抗性发展的后期阶段起更重要作用。
Malathion resistance of brown planthopper (Nilaparvata lugens Stl) wa s selected in laboratory and the successive changes in carboxylesterase (CarE) a nd AChE were also analyzed. The results showed that the speed of r esistance selection varied with generations. The biggest change of LD 50 oc curred between the 3rd－5th generations. The rise of carboxylesterase activity was cor related with the change in malathion resistance for the first 5 generations, whi le change in AChE sensitivity between 6th－8th generations had a higher correlat ion with the resistance development. Therefore, it was concluded that carboxyles terase activity increase play important role in the early stage of the resistanc e development and the AChE insensitivity at the late stage.
出处
《昆虫学报》
CAS
CSCD
北大核心
2003年第2期250-253,共4页
Acta Entomologica Sinica
基金
"973"国家重点基础研究项目 (J2 0 0 0 0 16 2 )
江苏省科技攻关计划 (BE2 0 0 1345 )
关键词
褐飞虱
羧酸酯酶
乙酰胆碱酯酶
malathion
brown planthopper
carboxylesterase
acetylcholinesterase
