title: Evaluation of a new formulation of adulticide, DUET, against West Nile virus vector mosquitoes.
abstract: DUET was evaluated against field-collected mosquito populations in St. John's County, FL, under laboratory and field conditions. Ten serial dilutions ranging from 22 to 2.2E-08 microg/ml of the product were tested against Aedes albopictus, Ae. taeniorhynchus, Culex quinquefasciatus, and Psorophora columbiae. At 0.0022 microg/ml, 100% mortality was recorded for all species except for Cx. quinquefasciatus. The 50% lethal concentration value for Cx. quinquefasciatus was 0.0029 microg/ml (CI = 0.00069 to 0.013). At the lowest dilution (2.2E-08 microg/ml) evaluated, Ae. albopictus, Ae. taeniorhynchus, and Ps. columbiae showed > 50% mortality. Ground ultralow-volume application of DUET resulted in overall average mortality of 87% of field-collected Cx. quinquefasciatus mosquitoes. There was a significant difference in mortality based on the distance of the caged mosquitoes (P < 0.05). However, mortality was > 70% at the farthest distance from the application (106 m).
authors.affiliation: Anastasia Mosquito Control District, 500 Old Beach Road, St. Augustine, FL 32080, USA.
authors.forename: Whitney A
authors.initials: WA
authors.lastname: Qualls
authors.forename: Rui-De
authors.initials: RD
authors.lastname: Xue
mesh_terms: D000818:Animals; D009033:Culicidae / Q000187:drug effects* / Q000502:physiology / Q000821:virology; D007303:Insect Vectors / Q000187:drug effects*; D007306:Insecticides / Q000494:pharmacology*; D010882:Piperonyl Butoxide / Q000494:pharmacology; D011722:Pyrethrins / Q000494:pharmacology; D014901:West Nile Fever / Q000635:transmission* / Q000821:virology; D014902:West Nile virus
chemical_list: D007306:Insecticides; D011722:Pyrethrins; C055818:d,d-T80-prallethrin; C006166:phenothrin; D010882:Piperonyl Butoxide