title: The use of Aedes aegypti larvae attractants to enhance the effectiveness of larvicides.
abstract: Aedes aegypti (L.) is an important dengue, chikungunya, and yellow fever vector. Immature stages of this species inhabit human-made containers placed in residential landscapes, and the application of larvicides inside containers that cannot be eliminated is still considered a priority in control programs. Larvicidal efficacy is influenced by several factors, including the formulation used, the water quality, and the susceptibility of larvae, among others. If an attractant can be incorporated into a slow-release larvicide formulation, it will be feasible to direct the larvae into the source of insecticide and thereby improving its efficacy. We studied the influence of 1-octen-3ol and 3-methylphenol on the rate of Ae. aegypti larvae mortality using the larvicides Bacillus thuringiensis var. israelensis (Bti), temephos, and spinosad. These chemicals were combined with the larvicides mixed with agar during the bioassays. Mortality was registered every 10 min, and a lethal time 50 (LT50) was calculated. The inclusion of the Ae. aegypti larvae attractants with the larvicides into a solid agar matrix improved their efficiency obtaining a strong and marked reduction in the LT50 compared with the use of larvicides alone.
authors.affiliation: Centro de Investigaciones de Plagas e Insecticidas (CONICET-CITEDEF), Juan Bautista de La Salle 4397, B1603ALO, Villa Martelli, Provincia de Buenos Aires, Argentina.
authors.forename: Paula V
authors.initials: PV
authors.lastname: Gonzalez
authors.affiliation: Centro de Investigaciones de Plagas e Insecticidas (CONICET-CITEDEF), Juan Bautista de La Salle 4397, B1603ALO, Villa Martelli, Provincia de Buenos Aires, Argentina.
authors.forename: Laura
authors.initials: L
authors.lastname: Harburguer
authors.affiliation: Centro de Investigaciones de Plagas e Insecticidas (CONICET-CITEDEF), Juan Bautista de La Salle 4397, B1603ALO, Villa Martelli, Provincia de Buenos Aires, Argentina.
authors.forename: Paola A
authors.initials: PA
authors.lastname: González-Audino
authors.affiliation: Centro de Investigaciones de Plagas e Insecticidas (CONICET-CITEDEF), Juan Bautista de La Salle 4397, B1603ALO, Villa Martelli, Provincia de Buenos Aires, Argentina. hmasuh@citedef.gob.ar.
authors.forename: Héctor M
authors.initials: HM
authors.lastname: Masuh
mesh_terms: D000330:Aedes / Q000187:drug effects* / Q000502:physiology; D000818:Animals; D001413:Bacillus thuringiensis / Q000502:physiology; D001681:Biological Assay; D003408:Cresols / Q000494:pharmacology*; D003715:Dengue / Q000517:prevention & control*; D004338:Drug Combinations; D005240:Feasibility Studies; D007306:Insecticides / Q000494:pharmacology*; D007814:Larva / Q000187:drug effects / Q000502:physiology; D018942:Macrolides / Q000494:pharmacology; D009032:Mosquito Control; D000442:Octanols / Q000494:pharmacology*; D010675:Pheromones / Q000494:pharmacology*; D000002:Temefos / Q000494:pharmacology
chemical_list: D003408:Cresols; D004338:Drug Combinations; D007306:Insecticides; D018942:Macrolides; D000442:Octanols; D010675:Pheromones; C010411:insect attractants; C042041:3-cresol; D000002:Temefos; C038844:1-octen-3-ol; C415329:spinosad
keywords: Attractant; Insecticide; Larvae; Mosquito