Adulticide Resistance Status of Aedes albopictus (Diptera: Culicidae) in Sabah, Malaysia: A Statewide Assessment

Resistance status of Aedes albopictus (Diptera: Culicidae) collected from Sabah, East Malaysia, was evaluated against four major classes of adulticides, namely pyrethroid, carbamate, organochlorine, and organophosphate. Adult bioassays conforming to WHO standard protocols were conducted to assess kn...

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Bibliographic Details
Published in:Journal of medical entomology 2019-11, Vol.56 (6), p.1715-1725
Main Authors: Elia-Amira, N. M. R., Chen, C. D., Low, V. L., Lau, K. W., Haziqah-Rashid, A., Amelia-Yap, Z. H., Lee, H. L., Sofian-Azirun, M.
Format: Article
Language:English
Subjects:
Aedes
Aedes - drug effects
Aedes albopictus
Animals
Aquatic insects
Bioassays
Borneo
carbamate
Carbamates - pharmacology
Control
Correlation analysis
Cross-resistance
Culicidae
Cyhalothrin
DDT
Deltamethrin
Dieldrin
Diptera
Fenitrothion
Hydrocarbons, Chlorinated - pharmacology
Insecticide Resistance
Insecticides
Insecticides - pharmacology
Malathion
Malaysia
Medical research
Medicine, Experimental
Mortality
Mosquito Control
Organic compounds
organochlorine
organophosphate
Organophosphates
Organophosphates - pharmacology
Permethrin
Pyrethrins - pharmacology
pyrethroid
Pyrethroids
Testing
VECTOR CONTROL, PEST MANAGEMENT, RESISTANCE, REPELLENTS
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Summary:Resistance status of Aedes albopictus (Diptera: Culicidae) collected from Sabah, East Malaysia, was evaluated against four major classes of adulticides, namely pyrethroid, carbamate, organochlorine, and organophosphate. Adult bioassays conforming to WHO standard protocols were conducted to assess knockdown and mortality rates of Ae. albopictus. Among tested pyrethroid adulticides, only cyfluthrin, lambda-cyaholthrin, and deltamethrin were able to inflict total knockdown. The other adulticide classes mostly failed to cause any knockdown; the highest knockdown rate was only 18.33% for propoxur. With regards to mortality rate, Ae. albopictus was unanimously susceptible toward all pyrethroids, dieldrin, and malathion, but exhibited resistance toward bendiocarb, propoxur, dichlorodiphenyltrichloroethane, and fenitrothion. Additionally, correlation analysis demonstrated cross-resistance between bendiocarb and propoxur, and malathion and propoxur. In conclusion, this study has disclosed that pyrethroids are still generally effective for Aedes control in Sabah, Malaysia. The susceptibility status of Ae. albopictus against pyrethroids in descending order was cyfluthrin > lambda-cyhalothrin > deltamethrin > etofenprox > permethrin.
ISSN:0022-2585
1938-2928
DOI:10.1093/jme/tjz117