Insecticidal Activity of the Essential Oil of Schinus terebinthifolius Raddi on Acanthoscelides obtectus Say and Zabrotes subfasciatus Boheman

• Autor(a) principal: Santos, M. R. A.
• Data de Publicação: 2007
• Outros Autores: Lima, R. A., Fernandes, C. F., Silva, A. G., Lima, D. K. S., Teixeira, C. A. D., Facundo, V. A.
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Fitos
• Texto Completo: http://revistafitos.far.fiocruz.br/index.php/revista-fitos/article/view/69
• topic: Essential Oil; Biological Control; Red Aroeira; Insecticidal Activity; Phaseoulus vulgaris; Óleo Essencial; Controle Biológico; Aroeira Vermelha; Atividade Inseticida; Phaseoulus vulgaris

The present work aimed to evaluate the effect of leaves essential oil of Schinus terebinthifolius on Acanthoscelides obtectus e Zabrotes subfasciatus. The leaf essential oil was extracted by stream distillation and diluted in acetone (v/v) to final dilutions of 10-2; 10-3; 10-4, 10-5, 10-6, 10-7 e 10-8 (v/v). Samples (1.0 mL) of pure acetone (control) or samples were added to Petri dishes (d = 9.0 cm) provided with autoclaved filter paper. After the solvent evaporation, 5 adult insects were placed in each plate, with 4 repetitions, in a randomized delineation, and the mortality rate was evaluated 24 and 48 hours after exposure to the essential oil. Concentration assayed between 10-2 and 10-7 led to complete mortality (100%) of A. obtectus, with the exposure during 48 hours to essential oil whereas the control experiment resulted in 30% of mortality in the same period. 100% of mortality was either obtained for Z. subfasciatus at the oil dilution of 10-2 and 10-3, after 24 and 48 hours; and 25% of mortality was observed for the control after 48 hours. These results pointed out to the high insecticidal potential of S. terebinthifolius essential oil against the insects tested.