Abstract: Objective To analyze the infestation and insecticide resistance of cockroaches in Xi'an city, 2012-2015. Methods The sticky trap method was used to investigate the infestation of cockroaches, and pesticide membrane method was used to determine resistance. Results The population of cockroaches in Xi'an city was relatively steady, and consisted mainly of Blattella germanica, Periplaneta americana and P. japonica. Blattella germanica were the predominant species. The density of cockroach peaked from July to August. The resistant coefficient of B. germanica to deltamethrin, beta-cypermethrin, acephate and propoxur was 8.01, 3.18, 2.72, and 3.99 fold, respectively. Conclusion Blattella germanica was the predominant species, which developed moderate resistance to deltamethrin.

Key words: Cockroaches, Density, Blattella germanica, Insecticide resistance

摘要： 目的 了解西安市2012-2015年蜚蠊危害状况及其抗药性，为制定蜚蠊防控策略提供依据。方法 2012-2015年选择餐饮店、农贸市场、宾馆酒店、医院和居民区5类环境，采用粘捕法采集蜚蠊，药膜法测定其抗药性。结果 西安市捕获蜚蠊以德国小蠊为主，占捕获总数的95.62%，黑胸大蠊和日本大蠊分别占2.35%和1.60%，其他蜚蠊占0.43%；蜚蠊密度呈稳中有降趋势，7-8月为蜚蠊密度高峰期。德国小蠊对溴氰菊酯、高效氯氰菊酯、乙酰甲胺磷和残杀威的抗性系数分别为8.01、3.18、2.72和3.99倍。结论 西安市餐饮业蜚蠊危害较重，德国小蠊对溴氰菊酯的抗药性为中度抗性。

关键词: 蜚蠊, 密度, 德国小蠊, 抗药性