UNIDEF   23986
UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICO PARA LA DEFENSA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Identification and evaluation of plant volatile compounds as feeding attractants of Aedes aegypti.
Autor/es:
S. VON OPPEN; S.LICASTRO; ZERBA, EDUARDO; H. MASUH; GONZALEZ AUDINO P.
Lugar:
Huerta Grande, Córdoba
Reunión:
Congreso; II Congreso latinoamericano de Ecología Química; 2012
Institución organizadora:
FAUBA, Latin American Association of Chemical Ecology, CICyTTP
Resumen:
Aedes aegypti is a well-known vector of dengue fever, yellow fever and other diseases. The role of the hematophagous mosquito females in pathogen transmission has been widely acknowledged. Most current attractants, used in lures for monitoring and controlling the mosquito population are based on human host odour with carbon dioxide. However, this odour blend fails to attract male and non-blood seeking female mosquitoes. Nectar feeding has been observed in males and females throughout the gonotrophic cycle. Although it was reported that plants and volatile emitting sugar sources attract mosquitoes into field traps, little is known about the attractiveness of single plant volatiles or volatile blends. The aim of this study is to gain a better understanding of the role of major plant volatile compounds involved in the mosquitoes’ attraction. The behavioural responses of mosquitoes to plant volatiles was tested in a two-choice behavioural assay. The bait of volatile compounds from a whole plant and 10% sucrose solution versus the plain sucrose were offered for feeding. The plants which volatiles were preferred by A. aegypti over the plain sucrose were Lobularia maritima and Plectranthus neochilus. Volatile compounds of those plants were identified by SPME-GC-MS. Acetophenone was the most abundant volatile compound in L. maritima and (-)-trans-Caryophyllene - in P. neochillus. The identification of volatile compounds, which are potentially involved in the nectar seeking behaviour of Aedes aegypti, may be valuable in increasing the effectiveness of mosquito population monitoring and control