title: An open-field efficacy trial using AquaDuet via an ultra-low volume cold aerosol sprayer against caged Aedes albopictus.
abstract: We conducted an open-field ultra-low volume efficacy bioassay using a water-based formulation AquaDuet (prallethrin [1%], sumithrin [5%], and piperonly butoxide [5%]) applied from a truck-mounted cold aerosol sprayer. The adulticide was applied at 90.6 ml/ha (1.23 oz/acre) and 3 replicated treatments were performed using caged Aedes albopictus collected from local wild populations. Rotating impingers and mosquito cages were placed in 3 rows stationed at 30.5 m (100 ft), 61.0 (200 ft), and 91.4 (300 ft) downwind of the spray vehicle. Initial knockdown was 95.6%, with overall mortality > 99% across all distances, despite low wind conditions. Volume median diameter (Dv0.5) and droplet density were 17.4 microm and 110.5 mm2, respectively. Our open-field studies against caged Ae. albopictus demonstrate that a water-based adulticide formulation is just as efficacious as traditional oil-based formulations.
authors.affiliation: Center for Vector Biology, Rutgers University, New Brunswick, NJ 08901, USA.
authors.forename: Ary
authors.initials: A
authors.lastname: Farajollahi
authors.forename: Gregory M
authors.initials: GM
authors.lastname: Williams
mesh_terms: D000330:Aedes; D000336:Aerosols; D000818:Animals; D005260:Female; D007306:Insecticides / Q000008:administration & dosage*; D009032:Mosquito Control; D011722:Pyrethrins / Q000008:administration & dosage*
chemical_list: D000336:Aerosols; D007306:Insecticides; D011722:Pyrethrins; C055818:d,d-T80-prallethrin