新疆石河子和博州地区马铃薯甲虫抗药性检测

马铃薯甲虫Leptinotarsa decemlineata(Say)在新疆北部的危害逐年加重。本文采用点滴法检测了石河子、博州和昌吉3个地区4个马铃薯甲虫田间种群对有机磷、氨基甲酸酯、拟除虫菊酯、新烟碱类等15种杀虫药剂的抗性水平。结果表明,所检测的沙湾、玛纳斯、博乐和奇台4个马铃薯田间种群对拟除虫菊酯类高效氯氟氰菊酯和溴氰菊酯产生了11～155倍的抗性,博乐种群对高效氯氰菊酯抗性为27倍;4个种群对氨基酸酯类的丁硫克百威也产生了33～59倍的抗性。另外,对硫丹和阿维菌素也分别产生了11～23倍和4～7倍的抗性。但对水胺硫磷等4种有机磷和吡虫啉等3种新烟碱类杀虫药剂仍然比较敏感。研究结果为上述地区马铃薯甲虫的有效控制提供重要依据。

Detection of insecticide resistance in Leptinotarsa decemlineata from the Shihezi and Bozhou areas

Damage caused by the Colorado potato beetle （CPB）,Leptinotarsa decemlineata （Say） in northern Xinjiang has increased since 1993.Insecticide resistance of four field populations of CPB to 15 insecticides was assessed using the topical application bioassay.The results show that the Shawan,Manas,Bole and Changji populations have developed 16—155-fold and 11—143-fold resistance to lammda-cyhalothrin and deltamethrin,respectively,and the Bole population showed 27-fold resistance to beta-cypermethrin.All four field populations also displayed 33—59-fold resistance to carbosulfan and 11—23-fold and 4—7-fold resistance to endosulfan and abamectin,respectively,but remain susceptible to two carbamates,four organophospates and three neonicotinoid insecticides.