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目的了解国际航行船舶携带的德国小蠊抗药性情况,为口岸防治合理用药提供科学依据。方法采集国际航行船舶上孳生的德国小蠊自然种群,带回实验室繁育,培养1代后,取2～3周龄雄性成虫,用药膜接触法测定其对丙烯菊酯、溴氰菊酯、敌敌畏、仲丁威、残杀威、毒死蜱、高效氯氰菊酯7种杀虫剂的抗性倍数。结果采自3艘国际航行船舶的德国小蠊对7种杀虫剂的抗性依次为2.54～5.56、2.18～5.14、3.98～5.87、1.57～1.91、0.83～1.27、1.06～1.59、2.89～3.93倍。结论 3艘国际航行船舶携带的德国小蠊对菊酯类及有机磷类杀虫剂敌敌畏已产生耐药性或抗药性,对氨基甲酸酯类杀虫剂及毒死蜱较为敏感,口岸防治德国小蠊可采用氨基甲酸酯类杀虫剂。
Objective To understand the resistance of Blattella germanica carried by ships on international voyages and to provide a scientific basis for rational use of drugs in ports. Methods The natural population of Blattella germanica breed on the international voyage was collected and brought back to the laboratory for breeding. After one generation of culture, male adults aged 2 to 3 weeks were collected and the contents of alfalfa, deltamethrin, Dichlorvos, sec-butyl, propoxur, chlorpyrifos, beta-cypermethrin seven kinds of insecticide resistance fold. Results The resistances of Blattella germanica collected from three international voyages to seven insecticides were 2.54 ~ 5.56, 2.18 ~ 5.14, 3.98 ~ 5.87, 1.57 ~ 1.91, 0.83 ~ 1.27, 1.06 ~ 1.59, 2.89 ~ 3.93 Times Conclusions The German cockroaches carried by three international ships have resistance or insecticide resistance to dithiocarb and organophosphate pesticides and are sensitive to carbamates and chlorpyrifos. Carbamate insecticides may be used.