Abstract: Objective To investigate the infestation and population distribution of cockroaches in the market and the pesticide resistance of Blattella germanica to provide a basis for comprehensive control measures. Methods The infestation of cockroaches was investigated by visual inspection; the density of cockroaches was measured by cockroach glue board; the pesticide resistance of B. germanica was determined by residual film method. The pesticides to which the cockroaches were sensitive were used for comprehensive control. Results The infestation rate of cockroaches in the market was 86.67%, and the density was 4.19 cockroaches/board/night. The levels of resistance (folds) of B. germanica to beta-cypermethrin, deltamethrin, propoxur, chlorpyrifos, dimethyl dichloroviny phosphate (DDVP), cypermethrin, permethrin, tetramethrin, and azamethiphos were 2.65, 3.82, 1.77, 3.51, 11.19, 5.21, 6.51, 12.00, and 2.11, respectively. The pesticides to which the cockroaches were sensitive and developed low resistance achieved a killing rate of 96.19%. Conclusion There is a high infestation rate of cockroaches in the market of Wuhan city, China. B. germanica is the dominant species of the cockroaches and has developed high resistance to DDVP and tetramethrin. Comprehensive control measures, including environmental treatment and pesticide use, should be taken to control the density of cockroaches below a harmless level.

Key words: Cockroach, Infestation rate, Pesticide resistance, Comprehensive control

摘要： 目的 了解集贸市场蜚蠊侵害情况、种群分布及德国小蠊的抗药性,为制定防制对策提供依据。方法 采用目测法调查蜚蠊侵害情况,用粘蟑板测定其密度,用药膜接触法测定抗药性,采用敏感和低抗的药物进行综合防制。结果 集贸市场蜚蠊侵害率为86.67%,密度为4.19只/(张·夜);德国小蠊对高效氯氰菊酯、溴氰菊酯、残杀威、毒死蜱、敌敌畏、氯氰菊酯、氯菊酯、胺菊酯、甲基吡口恶磷9种杀虫剂的抗药性分别为2.65、3.82、1.77、3.51、11.19、5.21、6.51、12.00和2.11倍;用敏感和低抗药物进行防制,杀灭率达96.19%。结论 武汉市集贸市场蜚蠊侵害率较高,德国小蠊为优势种,对敌敌畏、胺菊酯已产生高抗性;应采取环境治理及化学药物杀灭等综合防制措施,将蜚蠊密度控制在不足为害水平。

关键词: 蜚蠊, 侵害率, 抗药性, 综合防制