Author:
Wan-Norafikah Othman,Hasani Narimah Abdul Hamid,Nabila Abu Bakar,Najibah Ibrahim,Nurjuani Abdul Hadi Hazirah,Masliana Muhamad,Aliah-Diyanah Sharifah,Alia-Yasmin Zakaria,Yasmin-Zafirah Ibrahim,Farah-Farhani Azhar,Azahari Abdul Hadi,Faiqah-Nadhirah Mazkamal,Nurul-Azira Mohd Shah
Abstract
ABSTRACT
The present study establishes insecticide susceptibility profiles of Aedes albopictus adult populations from 4 hot springs in Selangor, Malaysia, against 7 pyrethroids through an adult mosquito susceptibility bioassay. All Ae. albopictus populations were subjected to a 1-h exposure to each pyrethroid following the World Health Organization. The mortalities were recorded at 60 min of exposure to bifenthrin, 30 min for other pyrethroids, and 24 h posttreatment for all pyrethroids. Complete mortalities were observed upon exposures to the pyrethroids under 60 min and at 24 h posttreatment, excluding permethrin 0.25%, alpha-cypermethrin 0.05%, and bifenthrin 0.2%. These findings indicated that permethrin, deltamethrin, lambda-cyhalothrin, cyfluthrin, and etofenprox possess the recommended pyrethroid adulticide active ingredients that could be applied in vector control programs at these hot springs in the future. Nevertheless, the application of pyrethroids should be carefully monitored in rotation with other insecticide classes, including organophosphates and carbamates to avoid the development of insecticide resistance among mosquito vectors towards all insecticides. Although there were no reported cases of Aedes-borne pathogens at these hot springs to date, the current study results could still assist the Malaysian health authorities in determining approaches to control Aedes populations in these hot springs, if required in the future.
Publisher
American Mosquito Control Association
Subject
Insect Science,Public Health, Environmental and Occupational Health,General Medicine,Ecology, Evolution, Behavior and Systematics