title: Assessing the susceptibility status of Aedes albopictus on Penang Island using two different assays.
abstract: Routine surveillance on resistant status of field mosquito populations is important   to implement suitable strategies in order to prevent pest outbreaks. WHO test kit bioassay is   the most frequent bioassay used to investigate the susceptibility status of field-collected   mosquitoes, as it is relatively convenient to be carried out in the field. In contrast, the topical   application of active ingredient is less popular in investigating the susceptibility status of   mosquitoes. In this study, we accessed the susceptibility status of Aedes albopictus Skuse   collected from two dengue hotspots on Penang Island: Sungai Dua and Persiaran Mayang   Pasir. Two active ingredients: permethrin and deltamethrin, were used. WHO test kit bioassay   showed that both wild strains collected were susceptible to the two active ingredients; while   topical application assay showed that they were resistant. This indicated that WHO test kit   bioassay less sensitive to low level of resistance compared to topical application assay.   Hence, topical application is expected to be more indicative when used in a resistance   surveillance programme.
authors: Vector Control Research Unit, Universiti Sains Malaysia, 11800 Penang, Malaysia.
authors: H H
authors: HH
authors: Chan
authors: F F W
authors: FF
authors: Mustafa
authors: J
authors: J
authors: Zairi
mesh_terms: D000330:Aedes / Q000187:drug effects*; D000818:Animals; D001681:Biological Assay / Q000379:methods*; D005260:Female; D007306:Insecticides / Q000494:pharmacology*; D008296:Malaysia; D009570:Nitriles / Q000494:pharmacology; D026023:Permethrin / Q000494:pharmacology; D011722:Pyrethrins / Q000494:pharmacology
chemical_list: D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; C017180:decamethrin; D026023:Permethrin