Insecticide resistance in Brazilian Triatoma infestans and Venezuelan Rhodnius prolixus

被引：111

作者：

Vassena, CV ^{[1
]}

Picollo, MI ^{[1
]}

Zerba, EN ^{[1
]}

机构：

[1] Ctr Invest Plagas & Insecticidas, RA-1603 Villa Martelli, Buenos Aires, Argentina

来源：

MEDICAL AND VETERINARY ENTOMOLOGY | 2000年 / 14卷 / 01期

关键词：

Rhodnius prolixus; Triatoma infestans; Chagas Disease vectors; field strains; insecticide resistance; pyrethroids; Argentina; Brazil;

D O I：

10.1046/j.1365-2915.2000.00203.x

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

Resistance levels to insecticides used in control of Chagas Disease vectors were assessed in two species of bugs (Hemiptera: Reduviidae): Triatoma infestans (Klug) from Brazil and Rhodnius prolixus Stal from Venezuela. The resistance ratios, compared to susceptible laboratory strains, were determined by topical application bioassays. The T. infestans PA strain exhibited resistance ratios of 7x to deltamethrin, 3.6x to beta-cyfluthrin and 3.3x to cypermethrin, but was susceptible to beta-cypermethrin and lambda-cyhalothrin. Rhodnius prolixus CA strain showed resistance to all the pyrethroids evaluated, the resistance ratios ranging between 4.5x to lambda-cyhalothrin and 12.4x to cypermethrin. Deltamethrin resistance in both strains was decreased by piperonyl butoxide, suggesting oxidative metabolism as cause of resistance.

引用

页码：51 / 55

页数：5

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