Abstract
When the distillable oil from adult pecan weevils, Curculio caryae, of both sexes was investigated separately with an integrated gas chromatographymass spectrometry system, evidence was obtained for a number of di- and trisubstituted aromatic hydrocarbons, seven phenolic and carbonyl aromatic compounds, and at least three alcohols. The major compounds were a series of alkanes and alkenes, four esters and four heterocyclic compounds. Among these, eleven compounds were unique to males and four were unique to females. The volatiles were also bioassayed in the field and each attracted the opposite sex. This investigation was part of a study made to identify the possible rôle of these compounds as a pheromone produced by the pecan weevil.
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