Effects of the essential oil obtained from Pilocarpus spicatus Saint-Hilaire (Rutaceae) on the development of Rhodnius prolixus nymphae

• Autor(a) principal: Mello,Cícero B.
• Data de Publicação: 2007
• Outros Autores: Uzeda,Cléber D., Bernardino,Marana V., Mendonça-Lopes,Duclécio, Kelecom,Alphonse, Fevereiro,Paulo C. A., Guerra,Marcelo S., Oliveira,Adriana P., Rocha,Leandro M., Gonzalez,Marcelo S.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Brasileira de Farmacognosia (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-695X2007000400007
• topic: Rhodnius prolixus; Pilocarpus spicatus; essential oil

Bioassays against fifth-instar nymphae of Rhodnius prolixus were conducted with essential oil of Pilocarpus spicatus extracted by hydrodistillation. The main results may be summarized as follows: (i) high levels of toxicity and paralysis together with discrete moulting inhibition were caused by topical application of either 0.5 µL or 1.0 µL per insect of the crude essential oil; (ii) partial fagoinhibition, high moulting inhibition, prolonged intermoulting period and high number of paralyzed insects, but no toxicity were observed after oral treatment using either 5 µL or 10 µL of Pilocarpus spilcatus essential oil per mL of ingested blood meal. The importance of these results in relation to the relevant biological events in R. prolixus is herein discussed.