INTEQUI   20941
INSTITUTO DE INVESTIGACIONES EN TECNOLOGIA QUIMICA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Insecticidal activity of essential oils isolated from plants of Cuyo Region on the main vector of Chagas disease
Autor/es:
GUERREIRO A, TONN CE, SOSA ME; BENITEZ MG, CANO C,
Lugar:
Mendoza
Reunión:
Otro; Reunión Anual de la Sociedad de Biología deCuyo.; 2010
Institución organizadora:
Sociedad de Biologia de Cuyo
Resumen:
      The chemical control of Triatoma. Infestans Klug., the main vector of Chagas disease in Argentina, started in the middle of the last century The application of pyrethroids began in the 1980s. Although the insecticide piretroides represents the current alternative of chemical control to vectors of Chagas, the extensive and intensive use it has developed resistance. These problems have highlighted the need to develop new types of selective insect-control alternatives.      As par of programam to study essential oil properties we have studied essential oil of Baccharis salicifolia Ruiz & Pavon, Eupatorium buniifolium Hook. et Arn and Fluorensia oolepis Blake, especies (Asteraceae). The esential oils was analizated from GCMS. In laboratory experiments  we determined the toxic properties of whole essential oils toward T. infestans ninfs and adults. Mortality was recorded daily until end -point mortality was reached after 24, 48 and 72 h. Percentage of insect mortality was corrected according to Abbott. Contact toxicity assays showed that all the evaluated essential oils were toxic. Furthermore, in all the cases mortality was dose dependent, but the essential oil of B.salicifolia essential oils caused the main deleterious effect after 24 hs of treatmen against T. infestans ninfs and adults. The results suggest that this esential oil would be considered a potential alternative to control insects  in main vector of Chagas disease