论文部分内容阅读
作者分析了褐飞虱对噻嗪酮、甲胺磷的代谢抗药性。室内生物测定显示褐飞虱对甲胺磷的抗性与虫体酯酶活力升高有关,而对噻嗪酮的抗性则主要是由于多功能氧化酶活力的提高。褐飞虱的个体酯酶活力测定表明,甲胺磷抗性群体中的酶活力中等以上的个体频率明显增加,达26.08％,比对照种群提高14.65％;噻嗪酮抗性群体显示相似趋势,但酶活力中等以上的个体频率增幅较小,为20.74％,比对照提高9.31％。说明褐飞虱对这两种药剂的代谢抗性机制存在差异。
The authors analyzed the metabolic resistance of buprofezin and methamidophos to BPH. Laboratory bioassay showed that the resistance of Nilaparvata lugens to methamidophos was related to the increase of esterase activity of insects, while the resistance to buprofezin was mainly due to the increase of multifunctional oxidase activity. The esterase activity of brown planthopper showed that the frequency of individuals with moderate or higher levels of methamidophos increased significantly by 26.08%, which was 14.65% higher than that of the control population. The buprofezin-resistant population showed a similar tendency, but the enzyme The frequency of individuals with moderate activity increased slightly by 20.74%, 9.31% higher than the control. These results indicate that the mechanisms of metabolic resistance of BPH to these two agents are different.