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目的:探讨杀虫剂对蜚蠊药效下降的原因。方法:瓶膜法(500ml果酱瓶)测KT_(50)。结果:德国小蠊对溴氰菊酯KT_(50)为45.34min,氯菊酯KT_(50)为78.69min,DDVP KT_(50)>120min;黑胸大蠊对溴氰菊酯KT_(50)为5.08min,氯菊酯KT_(50)为3.42min,DDVP KT_(50)为22.80min;澳洲大蠊对溴氰菊酯KT_(50)为3.43min～9.96min,氯菊酯KT_(50)为3.42min～5.87min,DDVP KT_(50)>120min;褐斑大蠊对溴氰菊酯KT_(50)为4.63min～8.82min,氯菊酯KT_(50)为2.34min～5.88min,马拉硫磷KT_(50)为58.15min,DDVP KT_(50)>120min;美洲大蠊对溴氰菊酯KT_(50)为4.30min～5.37min,氯菊酯KT_(50)为5.26min～7.24min,马拉硫磷KT_(50)为34.46min～92.07min,DDVP KT_(50)>120min。结论:德国小蠊对溴氰菊酯、氯菊酯和DDVP产生抗性;美洲大蠊对常用杀虫剂有耐药性,对DDVP产生抗性;澳洲大蠊、褐斑大蠊和黑陶大蠊为第一次报道。
Objective: To investigate the reasons for the decline of pesticide efficacy on cockroaches. Method: bottle membrane method (500ml jam jar) test KT_ (50). Results: KT_ (50) of Deltamethrin for German cockroach was 45.34 min, permethrin KT_ (50) was 78.69 min, DDVP KT_ (50)> 120 min, Was 5.08min, the permethrin KT_ (50) was 3.42min, the DDVP KT_ (50) was 22.80min, the relative content of deltamethrin KT_ (50) was 3.43min ~ 9.96min and the permethrin KT_ (50) Was 3.42min ~ 5.87min, DDVP KT_ (50)> 120min, KT_ (50) of deltamethrin was 4.63min ~ 8.82min and permethrin KT_ (50) was 2.34min ~ The KT 50 of the thioacetate was 58.15 min and the DDVP KT 50 was more than 120 min. The KT 50 of the American cockatoo was 4.30-5.37 min, and the permethrin KT 50 was 5.26-7.24 min, malathion KT_ (50) was 34.46min ~ 92.07min, DDVP KT_ (50)> 120min. CONCLUSIONS: German cockroach is resistant to deltamethrin, permethrin and DDVP. American cockroach is resistant to commonly used insecticides and resistant to DDVP. Periplaneta americana, Cockroach was first reported.