UNIDEF   23986
UNIDAD DE INVESTIGACION Y DESARROLLO ESTRATEGICO PARA LA DEFENSA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Biological and Chemical Characterization of New Plastic Ovitrap Containing Pyriproxyfen for Aedes aegypti Control
Autor/es:
LAURA HARBURGUER; SUSANA LICASTRO; HÉCTOR MASUH; EDUARDO ZERBA
Lugar:
Belem
Reunión:
Congreso; IV Pan-American Dengue Research Network Meeting; 2014
Institución organizadora:
Pan American Dengue Research Network
Resumen:
Aedes aegypti is an urban mosquito adapted to using artificial containers for breeding. In the absence of a vaccine, controlling the dengue vector is essential to avoid epidemics. In Argentina larvae control is performed by applying the organophosphate larvicide temephos in containers that cannot be eliminated while adult control is performed by ground application of space sprays with pyrethroids.Ovitraps are widely used for monitoring mosquito populations. Its improvement for population control purposes could introduce a new tool with low environmental impact that will allow an integrated vector control.In this work ovitraps made of black synthetic plastic materials containing 0.1% of the larvicide pyriproxyfen were developed. It was found that these ovitraps had larvicidal activity against Ae. aegypti obtaining an emergence inhibition (EI) of 100% which implies that pyriproxyfen incorporated into the plastic was successfully released to the water.An accelerated aging test of these plastic ovitraps was performed, this test is internationally standardized to simulate at least two years of aging. The results indicate that after 14 days plastic ovitraps with pyriproxyfen that suffered accelerated aging produce 100% of EI of the treated larvae, and its behaviour was the same as not aging ovitraps. Finally ovitraps resistance to successive washes was evaluated and was found an EI of 100% for more than 25 washes.Results of this work indicate the feasibility of using a long lasting material containing pyriproxyfen as larvicidal ovitrap. This tool together with the use of curtains or jar covers treated with insecticides could improve Ae. aegypti population control and potentially reduce dengue transmission.