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Anais da Sociedade Entomológica do Brasil
On-line version ISSN 1981-5328
COSTA, Maria L.M. et al. Effect of stereoisomers of the main component of the sex pheromone of Euschistus heros (F.) (Hemiptera: Pentatomidae) in the attractiveness of females. An. Soc. Entomol. Bras. [online]. 2000, vol.29, n.3, pp. 413-422. ISSN 1981-5328. http://dx.doi.org/10.1590/S0301-80592000000300004.
The attractiveness of Euschistus heros (F.) (Hemiptera: Pentatomidae) females to the eight stereoisomers of the methyl 2,6,10-trimethyltridecanoate, major component of the sex pheromone produced by the males of this species, was studied in a double choice olfactometer. Bioassays showed that the (2R, 6R, 10S) stereoisomer was necessary for the attractiveness of females, presenting better results in relation to the others. The stereoisomeric mixture was shown to present significative attractiveness to females, however, when compared to the (2R, 6R, 10S) stereoisomer, it showed lower attractiveness.
Keywords : Insecta; methyl 2,6,10-trimethyltridecanoate; semiochemicals; stereoisomeric mixture.