杀虫剂对抗药性蜚蠊驱出效果研究

目的；了解抗药性对蜚蠊药激驱出效果的影响，研究其解决对策，探讨抗性蜚蠊种群、密度调查方法。方法：药膜接触法，蜚蠊药激驱出试验及模拟现场试验。结果：在实验室按５３ｍｌ／ｍ＾３喷药，０．３％氯菊酯、０．０５％溴氰菊酯、０．１％高效氯氰菊酯、０．３％苯氰菊酯、１．０％ＤＤＶＰ对德国小蠊敏感品系的半数驱出中时（ＦＴ５０）分别为２．２４、１．２６、１．８５、３．２５、６．８１ｍｉｎ，对菊酯抗性品系（对溴氰菊

Flushing-out Effect of Insecticides to Resistant Strain of German Cockroach(Blattella germanica)

This research reported that deltamethrin resistant strain of the German cockroach were tested for flushing out effect by insecticides by the time flushing out response method in comparison with a known susceptible strain in laboratory and analogue field. The values of FT 50 of cockroach, which resistant ratio was 18.13 to deltamethrin, sprayed by 0.3 % permethrin, 0.05 % deltamethrin, 0.1 % high effect cypermethrin, 0.3 % cyphenothrin, and 1.0 % DDVP alcohol solution were more than 120min, unless by DDVP was 34.06min, comparing with 2.24 , 1.26 , 1.85 , 3.25 , 6.81 min respectively for the susceptible strains at the dose of 53ml/m 3. The FT 50 of resistant strain were 14.2 min treated by 0.3 % permethrin 1.0 % DDVP and more than 120min sprayed by 1.0 % permethrin and 0.5 % deltamethrin respectively. The FT 50 of resistant strain were 24.44 min treated by 0.3 % permethrin 1.0 % DDVP and more than 120min sprayed by 0.3 % permethrin comparing with 5.14 min for the susceptible strains tested in the analogue field at the dose of 50ml/m 2. The result indicated that the effect of flushing out was obviously weak for pyrethroid to resistant strain. It was suggested that the cockroach investigation was carried out by 0.3 % permethrin with 1.0 % DDVP treatment or by stick method.