Chemical composition of four essential oils from Eupatorium spp: Biological activities toward Tribolium castaneum (Coleoptera: Tenebrionidae) Composición química de cuatro aceites esenciales provenientes de Eupatorium spp. y su toxicidad para Tribolium castaneum (Coleoptera: Tenebrionidae)
2009
Hugo G. Lancelle | Oscar S. Giordano | Marta E. Sosa | Carlos E. Tonn
Toxic and repellent properties of whole essential oils from four Eupatorium (Asteraceae) species (E. buniifolium Hook. et Arn, E. inulaefolium Kunth, E. arnottii Baker, and E. viscidum Hook. & Arn) were investigated in different concentrations toward Tribolium castaneum Herbst adults. The essential oils were isolated by hydrodistillation techniques from the aerial parts. The analysis was performed by GC-FID and GC-MS methods. Contact toxicity assays showed that all the evaluated essential oils were toxic. Furthermore, in all the cases mortality was dose dependent. The main repellency was observed for the essential oil recovered from E. buniifolium.<br>Se evaluaron las propiedades tóxicas y repelentes de los aceites esenciales de cuatro especies del género Eupatorium (Asteraceae): E. buniifolium Hook. et Arn, E. inulaefolium Kunth, E. arnottii Baker y E. viscidum Hook. & Arn, en diferentes concentraciones frente a adultos de Tribolium castaneum Herbst. Los aceites esenciales se aislaron de las partes aéreas de las plantas, mediante técnicas de hidrodestilación y se analizaron por los métodos GC-FID y GC-MS. Los ensayos de toxicidad por contacto demostraron que todos los aceites fueron tóxicos y la mortalidad fue, en todos los casos, dependiente de la dosis. El aceite esencial de E. buniifolium presentó la mayor actividad repelente.
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