山东省五个棉花产区绿盲蝽对药剂的敏感性检测(英文)

Susceptibilities of Lygus lucorum Meyer-Dür(Hemiptera:Miridae)from five cotton-growing regions in Shandong,China to selected insecticides

利用闪烁管药膜法测定了2009年山东省德州、滨州、梁山、曲阜和聊城5个棉花产区绿盲蝽Lygus lucorum Meyer-Dr对硫丹、马拉硫磷、毒死蜱、灭多威、丁硫克百威、吡虫啉、联苯菊酯和氟虫腈8种杀虫剂的敏感性,筛选出适合各地区的高效防治药剂。结果表明:5个地区绿盲蝽种群对马拉硫磷、毒死蜱、丁硫克百威、联苯菊酯和吡虫啉处于敏感性阶段。不同种群之间对灭多威、硫丹和氟虫腈的敏感性差异较大,其中聊城种群为最敏感种群,滨州种群对灭多威、硫丹和氟虫腈的LC50值分别为聊城种群的5.12,6.04和39.80倍;曲阜种群对灭多威、硫丹和氟虫腈的LC50值分别为聊城种群的22.12,5.48和22.80倍。两种群对此3种药剂的敏感性下降,而其余种群仍处于较敏感阶段。8种药剂对绿盲蝽成虫的毒力按大小依次排序为:氟虫腈>灭多威、联苯菊酯、硫丹>马拉硫磷、毒死蜱>丁硫克百威>吡虫啉。2009年7-10月间德州夏津绿盲蝽种群对8种杀虫剂的敏感性变化极微。

Susceptibilities of the green plant bug,Lygus lucorum Meyer-Dür collected from five cotton-growing regions in Shandong Province,China,to endosulfan,malathion,chlorpyrifos,bifenthrin,methomyl,carbosulfan,imidacloprid and fipronil,were determined by glass-vial bioassay in 2009 in order to choose efficient insecticides for controlling green plant bugs in different regions.Dose-response results indicated that L.lucorum from five cotton-growing regions were susceptible to malathion,chlorpyrifos,carbosulfan,bifenthrin and imidacloprid at LC50 values.Toxicity data indicated that L.lucorum collected in Liaocheng（LC）was more susceptible to methomyl,endosulfan and fipronil than those in other four regions.The results indicated that the LC50 values of Binzhou（BZ）population for methomyl,endosulfan and fipronil were 5.12-,6.04-and 39.80-fold higher than those of LC population,respectively,and the LC50 values of Qufu（QF）population for methomyl,endosulfan and fipronil were 22.12-,5.48-and 22.80-fold higher than those of LC population,respectively.The populations collected in BZ and QF was less susceptible to methomyl,endosulfan and fipronil.The toxicity sequence of 8 insecticides to L.lucorum was ranked as follows：fipronil﹥methomyl,bifenthrin,endosulfan﹥malathion,chlorpyrifos﹥carbosulfan﹥imidacloprid.The susceptibilities of L.lucorum adults from Dezhou（DZ）to 8 insecticides were hardly changed during July and October in 2009.The current study may provide a better understanding of insecticide efficacies to L.lucorum and develop efficient pest management strategies in those cotton-growing regions.