Evaluation of commercial aerosol insecticides for control of Aedes aegypti susceptible or resistant to pyrethroids
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Published:2023-03-10
Issue:2 mar-abr
Volume:65
Page:151-159
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ISSN:1606-7916
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Container-title:Salud Pública de México
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language:
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Short-container-title:Salud Publica Mex
Author:
López-Solis Alma Delia,Janich Ashley J.,Solis-Santoyo Francisco,Ordóñez-González José Genaro,Fuentes-Maldonado Gabriel,Saavedra-Rodríguez Karla,Villarreal-Treviño Cuauhtémoc,Black IV William C.,Rodríguez Américo D.,Penilla-Navarro Rosa Patricia
Abstract
Objective. To evaluate indoor use of commercial aerosols for dengue vector mosquito control, and estimate the number of treatable houses per can. Materials and methods. Four aerosol products containing combinations of pyrethroids (two containing propoxur and one containing synergists too), were evaluated with mosquitoes in a room of a Tapachulastyle house. Eight cages containing 20 insecticide susceptible or resistant females were hung from tripods, another set was placed in sheltered areas of the room. From the entrance of the room, one of 4-9 concentrations was sprayed for each aerosol, leaving the mosquitoes for 30 min after sprayed. Mortality was recorded after 24 h and lethal concentrations were calculated. Results. Aerosol A had the highest LC50, with 0.308 g for mosquitoes hanging from tripods and 0.453 g for sheltered mosquitoes; followed by aerosols C, D and B, with statistical differences between types of exposure. Conclusions. Aerosols B-D could spray 20-25 3-room houses (56 m3-room), killing all resistant mosquitoes. Aerosols may become a good tool for indoor mosquito control, if the optimal concentration and correct spray method are used.
Publisher
Instituto Nacional de Salud Publica
Subject
Public Health, Environmental and Occupational Health,Public Health, Environmental and Occupational Health