Abstract
THE response of the bark beetle Ips pini (Say) (Coleoptera: Scolytidae) to the attractant produced by conspecific males boring in ponderosa pine is inhibited by the presence of boring males of I. paraconfusus Lanier1. Ipsenol, 2-methyl-6-methylene-7-octen-4-ol, one of three synergistic components required to elicit attraction in I. paraconfusus2, also reduces catches of I. pini at traps baited with boring male I. pini1,3. Ipsenol has not been found in I. pini. Because (S)-(—)-ipsenol is the only enantiomer of ipsenol present in I. paraconfusus4, we compared the inhibitory activity of the enantiomers of ipsenol with that of the racemic compound in the laboratory and field and we found that I. pini is affected specifically by the (S)-(—)-enantiomer.
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BIRCH, M., LIGHT, D. & MORI, K. Selective inhibition of response of Ips pini to its pheromone by the (S)-(—)-enantiomer of ipsenol. Nature 270, 738–739 (1977). https://doi.org/10.1038/270738a0
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DOI: https://doi.org/10.1038/270738a0
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