title: Evaluation of a new formulation of permethrin applied by water-based thermal fogger against Aedes albopictus in residential communities in St. Augustine, Florida.
abstract: The efficacy of a new water-based formulation containing 30% permethrin and 30% piperonyl butoxide against laboratory and field populations of Aedes albopictus was evaluated in the laboratory, in semifield experiments, and in residential communities in St. Augustine, FL. In laboratory bottle bioassay, 3 doses (3.18 g/ml, 2.26 g/ml, and 1.59 g/ml) of the permethrin product resulted in 100% mortality of adult mosquitoes in 1 h. In semifield experiments, the insecticide sprayed by the water-based thermal fogger at 381.5 ml/min application rate caused 99% mortality of caged mosquitoes. At 24 h posttreatment in the residential communities, there was 79% and 83% reduction of the natural population (numbers) of adult Ae. albopictus and all adult mosquito species collected in BioGent (BG) sentinel traps baited with a BG lure in the 3 test sites, respectively. There was also a 79% reduction in the number of Ae. albopictus eggs collected in ovitrap used in the treated sites. The reductions were significant for adult Ae. albopictus and all mosquito species at 1 wk posttreatment, but no significant reduction was observed at 2-3 wk posttreatment. These findings demonstrate the effectiveness of the new water-based permethrin product against Ae. albopictus populations in residential communities.
authors.affiliation: Anastasia Mosquito Control District, 500 Old Beach Road, St. Augustine, FL 32080, USA.
authors.forename: Temitope O
authors.initials: TO
authors.lastname: Alimi
authors.forename: Whitney A
authors.initials: WA
authors.lastname: Qualls
authors.forename: Deborah D
authors.initials: DD
authors.lastname: Roque
authors.forename: Diana P
authors.initials: DP
authors.lastname: Naranjo
authors.forename: Dayana M
authors.initials: DM
authors.lastname: Samson
authors.forename: John C
authors.initials: JC
authors.lastname: Beier
authors.forename: Rui-De
authors.initials: RD
authors.lastname: Xue
mesh_terms: D000330:Aedes; D000818:Animals; D005260:Female; D005651:Fumigation; D006798:Housing; D007306:Insecticides / Q000008:administration & dosage*; D026023:Permethrin / Q000008:administration & dosage*
chemical_list: D007306:Insecticides; D026023:Permethrin