防治红火蚁触杀型药剂的筛选  

Bioassay of contact insecticides to red imported fire ant,Solenopsis invicta Buren

作　　者：陈焕瑜[1] 冯夏[1] 吕利华[1] 刘杰[2] 周小毛[1] 莫严[1] 

机构地区：[1]广东省农科院植物保护研究所,广东广州510640 [2]华南农业大学资源环境学院,广东广州510642

出　　处：《广东农业科学》2006年第5期28-30,共3页Guangdong Agricultural Sciences

基　　金：广东省重大科技专项项目(2005A20401001);广东省社会发展攻关项目(2005B33302004);广东省红火蚁防控技术研究项目(粤农保[2005]26号)

摘　　要：测定了9种杀虫剂的触杀活性和其中8种药剂对红火蚁工蚁的致死中浓度,触杀活性测试表明,48%毒死蜱对工蚁的击倒速度和致死率均高,药后0.5 h工蚁死亡率达100%;氨基甲酸酯类药剂药后8 h工蚁的被击倒率达100%;5%氟虫腈10 000倍和10%溴虫腈10 000倍药液处理后工蚁的被击倒速度低,但药后24 h工蚁死亡率达100%;高效氯氰菊酯和杀虫双对工蚁的毒性是可恢复的。毒力测试表明,98%杀螟丹对红火蚁毒力最强,其次是10%溴虫腈和48%毒死蜱,而有机磷类的敌敌畏和氨基甲酸酯类的丁硫克百威毒力表现较差,拟除虫菊酯类的高效氯氰菊酯表现一般。试验结果表明,氟虫腈、溴虫腈、毒死蜱、杀螟丹等药剂可被推荐用于野外红火蚁的灌巢防治。Toxicity of 9 contact insecticides and media lethal concentration （LC50） of 8 insecticides was bioassayed in the laboratory. Among them, both of knockdown rates and mortality of fire ant workers by 48 % chlorpyrifos EC were as highest as 100% half an hour after treatment and knockdown rate of carbamate insecticides for ant workers reached as high 100% 8 hour after treatment. Although knockdown speed of fipronil and chlorfenapyr was slow, their mortality after 24 hour reached 100%. Beta - cypermethrin EC knocked workers down faster than others, but unfortunately the insects recovered soon. Bioassay indicated 98% cartap, one of nereistoxin insecticide, exhibited best toxicity to fire ant, beta - cypermethrin better, and DDVP and carbosulfan worst. 5% Fipronil EC, 10% chlorfenapyr EC, 48% chlorpyrifos EC, and 98% cartap and so on were recommended to be used as mound drench insecticides for fire ant control in grassy fields.

关 键 词：红火蚁 触杀型杀虫剂 活性 毒力测定 

分 类 号：S433.89[农业科学—农业昆虫与害虫防治] S482.3[农业科学—植物保护]