阿维菌素对小菜蛾的抗性选育及其对解毒酶活性的影响  

Study on resistance selection by avermectins and its effect on activities of detoxification enzymes in Plutella xylostella (L.)

作　　者：李腾武[1] 高希武[1] 郑炳宗[1] 许向丽[1] 

机构地区：[1]中国农业大学昆虫学系,北京100094

出　　处：《昆虫学报》2000年第S1期38-43,共6页Acta Entomologica Sinica

基　　金：国家"九五"攻关项目

摘　　要：用阿维菌素对小菜蛾Plutellaxylostella (L .)进行了抗性选育 ,并对选育过程中小菜蛾解毒酶的活性进行了研究。选育从F0 至F2 1代 ,抗性缓慢波动上升 ,达到选育前的 12 2 91倍 ;F2 1至F2 7代 ,抗性迅速增长 ,达到选育前的 812 73倍 ,抗性发展趋势呈现S型曲线。随着选育代数的增加 ,对乙酰胆碱酯酶 (AChE)没有明显的影响 ;羧酸酯酶 (CarE)活性 ,F2 7是F0 的 1 5倍 ,从F2 2 开始 ,活性在较高水平上波动 ;谷胱甘肽转移酶 (GST)活性F2 7是F0 的 2 2倍 ,且从F18开始 ,活性在较高水平上波动。选育的抗性品系 ,增效醚对阿维菌素增效 6The resistance selection of diamondback moth (DBM), Plutella xylostella (L.), to avermectins (AVMs) and its effect on activities of detoxification enzymes in AVMs selected DBM were investigated during 1996～1999. After 27 generations of continuous selection pressure, resistance to AVMs was over 812 folds in this strain compared with the unselected parents. Resistance selection by AVMs has no effect on activity of acetylcholinesterase (AChE). The activities of carboxylesterase (CarE) and glutathione S ...

关 键 词：小菜蛾 阿维菌素 抗性选育 解毒酶 乙酰胆碱酯酶 

分 类 号：Q965[生物学—昆虫学]