Molecular response of Musca domestica L. to Mintostachys verticillata essential oil, (4R) (+)-pulegone and menthone.

ROSSI, YANINA E.; DRA. LILIÁN E. CANAVOSO (UNIVERSIDAD NACIONAL DE CÓRDOBA); PALACIOS, SARA MARIA

FITOTERAPIA

ELSEVIER SCIENCE BV

Año: 2012 vol. 83 p. 336 - 336

0367-326X

ntense applications of synthetic insecticides for the control of adult Musca domestica have led to the insects developing resistance to most of them. In consequence, there is interest in new active ingredients as alternatives to conventional insecticides. Essential oils (EO) are potential tools for controlling M. domestica because of their effectiveness and their minimal environmental effects. In a fumigant assay, M. domestica adults treated with Minthostachys verticillata EO [LC50=0.5 mg/dm3; majority components by SPME-GC: (4R)(+)-pulegone (67.5%), menthone (22.3%) and (4R)(+)-limonene (3.8%)], died within 15 min or less. The terpenes absorbed by the flies and their metabolites, analyzed using SPME fiber, were (4R)(+)-limonene (LC50=6.2 mg/dm3), menthone (LC50=1.9 mg/dm3), (4R)(+)-pulegone (LC50=1.7 mg/ dm3) and a new component, menthofuran (LC50=0.3 mg/dm3), in a relative proportion of 12.4, 6.5, 35.9 and 44.2% respectively. Menthofuran was formed by oxidation of either