INVESTIGADORES
GUERENSTEIN Pablo Gustavo
congresos y reuniones científicas
Título:
Development of methods for monitoring and control of vectors of Chagas Disease using host odors
Autor/es:
GUIDOBALDI F; GUERENSTEIN PG
Lugar:
Huerta Grande - COR
Reunión:
Congreso; 2nd Meeting of the Latin American Association for Chemical Ecology; 2012
Institución organizadora:
Asociacion Latinoamericana de Ecologia Quimica, CICYTTP-CONICET, Fac. Agronomia-UBA
Resumen:
Esta resumen corresponde a una presentacion oral en Simposio.Chagas disease is a serious health problem in Latin America and vector control isthe most effective method to prevent it [1]. Vector control is mainly accomplishedby insecticide spraying of infested houses. However, this is not ideal consideringthat the insects develop resistance to the insecticides, and that these chemicalscould affect people living in the sprayed houses. The use of lured trap devices isa sustainable and an environmentally-friendly method for vector control [2]. Weaim at developing effective lures and traps.Tests carried out in a dual-choice trap olfactometer using a synthetic host odorblend consisting of L(+)-lactic acid, hexanoic acid and ammonia evokedactivation, attraction and capture in T. infestans and R. prolixus. Nevertheless theblend performance could be improved. A pit-fall trap-device inspired on the trapolfactometercould exploit the host seeking behavior of these insects.Another method to capture triatomines in the field is the popular Noireau trap,using adhesive tape around a container with the bait (a mouse). When attemptingto reach the bait, the bugs get stuck on the tape. However, it is not known if, afterbeing immobilized, the adults stuck become stressed and hence emit their alarmpheromone thus repelling conspecifics. If so, this could result in an overlookedreduction in the trapping performance of this device. We tested if adults stuck insuch a way reduce the performance of the trap. Our results suggest thatattraction/trapping effectiveness is not compromised by the presence ofpreviously trapped adults bugs.In order to optimize tests to study attraction and to make results easilycomparable between different methods and laboratories, a methodologicalanalysis comparing different variables related to attraction will be presented anddiscussed.[1] WHO, 2010. Chagas disease (American trypanosomiasis). Fact sheet N°340.http://www.who.int/mediacentre/factsheets/fs340/en/index.html[2] Guerenstein, P.G., Lazzari, C.R., 2010. The role of olfaction in host seeking ofTriatominae bugs, in: Takken, W. and Knols, B. (Eds.), Ecology and Control ofVector- Borne Diseases Volume II: Olfaction in Vector-Host Interactions.Wageningen University Press, pp. 309-325.