Formosan Entomologist (2003) 23, 263-274

Ying-Hsi Lin, Shu-Ching Wu, Err-Lieh Hsu, Hwa-Jen Teng, Chau-Mei Ho and Hsiu-Hua Pai (2003)
[Insecticide resistance in Aedes aegypti during dengue epidemics in Taiwan, 2002]
Formosan Entomologist 23 (4), 263-274
Abstract: Pest control operators have routinely applied the insecticides for mosquito control when dengue fever cases occurred in the Tainan and Kaohsiung areas of Taiwan. We used 7 kinds of WHO insecticide-impregnated papers to determine the insecticide susceptibility of adult Aedes aegypti in 2002. There was poor efficiency to the all strains of Aedes aegypti with 0.1% propoxur paper. The 24-h percentage mortality with 1% fenitrothion paper was above 80%. The 24-h percentage mortalities - of the Chianjen and Lingya (2002) strains with 0.15% cyfluthrin paper did not reach 100%. The Chianjen, Lingya (2002), and Shinshing strains showed resistance to deltamethrin. The 24-h percentage mortalities of Chianjen, Lingya (1990R), Lingya (2002), Shinshing, Linyuan and Fengshan strains with 0.5% etofenprox paper did not reach 70%. The Chianjen, Lingya (2002), Shinshing, Sanmin, Tzuoying, Linyuan, Gangshan, Fengshan, Gueiren, Shinshi, S. District, W. District, and C. District strains showed resistance to permethrin. The 24-h percentage mortalities of Sanmin, Tzuoying, and Gangshan strains with 0.05% lambdacyhalothrin paper did not reach 70%. The resistance ratios of adult mosquitoes of the Chianjen, Lingya (2002), and Lingya (1900R) strains for permethrin compared to susceptible strains were above 312.5X, while those of the 4th instar larvae were 20.8, 37.5, and 102.1, respectively. Results of a synergism study on larvae resistant to permethrin showed correlations to the activities of microsomal monooxygenases and esterases.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Hwa-Jen Teng

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aedes aegypti		Taiwan