新疆棉田花蓟马种群对11种杀虫剂的抗性

Resistance of flower thrips Frankliniella intonsa populations in Xinjiang cotton fields to 11 insecticides

中文关键词:棉花  花蓟马  杀虫剂  毒力  抗药性

keywords:cotton  Frankliniella intonsa  insecticide  toxicity  resistance

中文摘要:为明确新疆维吾尔自治区（简称新疆）棉田花蓟马Frankliniella intonsa种群的抗药性现状，采用浸渍法测定11种杀虫剂对东疆哈密种群、北疆博乐、昌吉、石河子种群及南疆阿克苏、喀什、库尔勒种群的毒杀效果，并计算抗性倍数。结果表明：7个花蓟马种群对双丙环虫酯（昌吉种群除外）、溴氰虫酰胺、氯虫苯甲酰胺以及高效氯氟氰菊酯均产生高水平抗性，抗性倍数均大于111.0倍，其中喀什种群对溴氰虫酰胺已产生极高水平抗性，抗性倍数达3 906.6倍。7个花蓟马种群对呋虫胺、吡虫啉（石河子种群除外）和甲氰菊酯均产生中等水平抗性，抗性倍数介于12.5～96.2倍之间。库尔勒种群对虫螨腈产生中等水平抗性，抗性倍数为23.8倍，而其他6个种群对其仍保持敏感水平或低水平抗性，表明该药可作为新疆棉区花蓟马防治的候选杀虫剂。整体而言，南疆、北疆地区花蓟马种群的抗药性水平明显高于东疆种群。

Abstract:To clarify the current status of insecticide resistance in field populations of flower thrips Frankliniella intonsa from cotton-growing areas of Xinjiang, the toxicity of 11 insecticides to populations collected from eastern Xinjiang(Hami), northern Xinjiang(Bole, Changji, Shihezi), and southern Xinjiang(Aksu, Kashgar, Korla) was determined using the dipping method, and resistance ratios(RRs) were calculated. The results indicated that the seven populations had developed high-level resistance to afidopyropen(except the Changji population), cyantraniliprole, chlorantraniliprole, and lambdacyhalothrin, with resistance ratios exceeding 111.0. Among them, the Kashgar population exhibited extremely high resistance to cyantraniliprole, with a RR value of 3 906.6. The seven populations showed moderate resistance to dinotefuran, imidacloprid(except the Shihezi population) and fenpropathrin, with RRs ranging from 12.5 to 96.2. The Korla population developed moderate resistance to chlorfenapyr(RR=23.8), whereas the other six populations remained susceptible or exhibited low levels of resistance(1F. intonsa in Xinjiang cotton fields. Overall, the resistance levels of F. intonsa field populations in southern and northern Xinjiang were significantly higher than those in eastern Xinjiang.