Olfactory perception of pheromone and hostodour enantiomers by ips typographus (coleoptera: scolytidae)
1978
DICKENS, J.C.
Electroantennograms (EAGs) were recorded from adult male and female beetles to enantiomers of their pheromone, cis-verbenol, and the precursor, α-pinene. (S)-(-)-α-pinene, the precursor for (S)-(-)-cis-verbenol, elicited significantly greater responses in both males and females than did the (R)-(+)-enantiomer. Male beetles were more responsive to the (S)-(-)-α-pinene than female beetles. The response of female beetles was significantly greater to (S)-(-)-cis-verbenol than to the (R)-(+)-enantiomer. Although EAGs indicated a similar number of acceptor sites for both the pheromone and host terpene, the pheromone had a greater affinity for its acceptor sites. Based on electro-physiological data hypothetical acceptors were constructed.
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