苜蓿盲蝽属三种害虫对环氧虫啶的敏感性  

The susceptibility of three Adelphocoris species to cycloxaprid

作　　者：刘永强[1] 潘洪生[1,2] 陆宴辉[1] 

机构地区：[1]中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京100193 [2]新疆农业科学院植物保护研究所,乌鲁木齐830091

出　　处：《植物保护》2017年第6期144-146,172,共4页Plant Protection

基　　金：国家重点研发计划(2017YFD0201900);国家现代农业产业技术体系建设专项资金(CARS-18-12)

摘　　要：环氧虫啶是我国自主研发的一种新型的新烟碱杀虫剂,主要用于防治刺吸式口器害虫。本文采用点滴法测定了环氧虫啶对中黑盲蝽、苜蓿盲蝽、三点盲蝽的毒力,结果表明,三种盲蝽对环氧虫啶均具有较高的敏感性,其中中黑盲蝽的敏感性最高,LD_(50)值为2.03ng/头,其次为苜蓿盲蝽和三点盲蝽,LD_(50)分别为3.12和3.34ng/头。多功能氧化酶抑制剂PBO能明显增加环氧虫啶对三种盲蝽的毒力,谷胱甘肽S-转移酶抑制剂DEM只在中黑盲蝽上对环氧虫啶表现出增效作用,而羧酸酯酶抑制剂TPP未显示增效作用。这说明,环氧虫啶具有防治苜蓿盲蝽属三种害虫的应用潜力,细胞色素P450-单加氧酶可能在环氧虫啶代谢中起重要作用。Cycloxaprid is a novel self-developed neonicotinoid insecticide for the control of sucking insect pests.Three Adelphocoris species(Hemiptera:Miridae),A.suturalis,A.lineolatus,and A.fasciaticollis,are important insect pests in cotton,alfalfa and other crops in China.Bioassays of cycloxaprid showed that A.suturalis(LD_(50):2.03 ng/adult)was more susceptible to cycloxaprid than A.lineolatus and A.fasciaticollis with LD_(50) values of 3.12 and 3.34 ng/adult,respectively.The toxicity of cycloxaprid to three Adelphocoris species could be synergized by piperonyl butoxide(PBO),but generally not by TPP.Inhibitor of glutathione S-transferase(GST),the DEM,showed synergism only to cycloxaprid against A.suturalis.The results suggest that cycloxaprid is a candidate for controlling Adelphocoris species.Cytochrome P450-dependent monooxygenase might play an important role in the metabolism of cycloxaprid in these three mirid bugs.

关 键 词：新烟碱杀虫剂 苜蓿盲蝽属 毒力 酶抑制剂 

分 类 号：S435.622[农业科学—农业昆虫与害虫防治]