COMPOSITION, SEMIOCHEMICAL ACTIVITY AND TOXICITY OF THE ESSENTIAL OIL FROM CAPPARIS ATAMISQUEA ON CERATITIS CAPITATA AND TRIATOMA INFESTANS

JOFRÉ BARUD, F.; LÓPEZ S; LÓPEZ ML (CORRESPONDING AUTHOR); SÁNCHEZ M; ARAGÓN L; ZYGADLO JA; PALERMO J.; FERESIN G.

Congreso; XXX Reunión Anual de la Sociedad de Biología de Cuyo; 2012

Sociedad de Biología de Cuyo

Botanical pesticides are gaining increasing attention as an alternative to synthetic insecticides. Capparis atamisquea (Capparaceae) is popularly known as matagusano. Only the antifeedant and repellent properties of their crude extracts have been reported against insects. In addition, the essential oil (EO) composition of this species is unknown. We evaluated the composition of EO from C. atamisquea by GC-MS and RMN analysis. Nine compounds were identified in the oil amounting 99.9%. The main component was hexanenitrile (85.1%) and heptanenitrile (7.3%). Toxic activity on adults of C. capitata was tested on both sexes. At 72 h post-treatment of topical bioassay 40% of mortality on males and 46% mortality on females was achieved at 100 µg/fly. The oil showed repellent properties on females of C. capitata while it was not significant on males. On the contrary, the EO showed an attractant activity on fifth instar nymphs of T. infestans. Acknowledgments. PICT´07-01468, PIP´08-0407, CICITCA- F887 funded this study. To ProCEM-San Juan for C. capitata individuals and to Dr. R. Stariolo from Serv. Nac. Chagas (Cba, Arg.) for T. infestans nymphs.