• 论著 •

### 临海市蚊、蝇、蜚蠊对7种杀虫剂的抗性调查

1. 浙江省疾病预防控制中心病媒生物防制所 杭州310051
• 出版日期:2008-06-20 发布日期:2008-06-20

### Investigation on resistances to 7 insecticides of mosquito,fly and cockroach in Linhai

REN Zhang-yao; QIU Zai-ping; YANG Tian-ci; LU Long-xi

1. Zhejiang Center for Disease Control and Prevention, Hangzhou 310051, China
• Online:2008-06-20 Published:2008-06-20

Abstract: Objective To explore the resistance trends of Culex pipiens pallens, Musca domestica and Blattella germanica (field population) to 7 insecticides in Linhai and provide evidences for optimizing insecticides application and promoting insect control. Methods Dipping method was applied to the determination of LC50 for the fourth instar larva of C.pipiens pallens, topical application method for determination of LD50 for M.domestica and flask film method for determination of KT50 for B.germanica. Results The resistance of C.pipiens pallens field population to bassa, acetophenate, deltamethrin and permethrin were at low level with the range from 1.89 to 8.93 (RR<10), and the resistance to dichlorovos was at medium level with the value of 10.16 (RR>10). The resistance of M.domestica field population to acetophenate and permethrin were at low level with the values of 1.26 and 5.32 (RR<10), and the resistance to dichlorovos and cypermethrin were at medium level with the value of 17.44 and 12.64 (RR>10). The resistance to deltamethrin were at high level with the value of 37.86 (RR>30). The resistances of B.germanica field population to 4 inseticides were all at low level (RR=2.53-4.12) and had no significant differences among them. Conclusion The field population of mosquito, fly and cockroach had different resistances to all 7 insecticides.