Essential oils from leaves and fruits of Protium heptaphyllum collected in Tamandaré beach -Pernambuco/Brazil were analysed by GC/MS and tested for toxicity and repellent effect against the two spotted spider mite (Tetranychus urticae). The major constituent identified in the fruits was a-terpinene (47.6 %) whereas oil from leaf contained mainly sesquiterpenes such as 9-epi-caryophyllene (21.4 %), trans-isolongifolanone (10.7 %) and 14-hydroxi-9-epi-caryophyllene (16.7 %). The fruit oil was found to be more effective against the mite when compared to the leaf oil. Both showed mortality properties and oviposition deterrence in higher concentration (10 Fl.l -1 air), but only the essential oil from fruits induced repellence on T. urticae.
KEY-WORDSProtium heptaphyllum, essential oil, Tetranychus urticae, acaricidal activityComposição química e atividade acaricida do óleo essencial das folhas e frutos de Protium heptaphyllum (Aubl.) Marchand (Burseraceae) 1
RESUMO
O óleo essencial das folhas e frutos de Protium heptaphyllum coletada em Tamandaré-Pernambuco foi analisado por CG/EM e testado sua toxicidade e efeito repelente contra ácaro rajado (Tetranychus urticae). O constituinte majoritário identificado nos frutos foi a-terpineno(47,6 %) enquanto que nas folhas foram os sesquiterpenos 9-epi-cariofileno (21,4 %), trans-isolongifolanona (10,7 %) and 14-hidroxi-9-epi-cariofileno (16,7 %)