Abstract
(R)-(−)-Linalool was identified as a minor component sex pheromone of the scarab beetleHolotrichia parallela (Coleoptera: Scarabaeidae). Field evaluations revealed that, although not attractive per se, (R)-(−)-linalool enhances the attractiveness of the major sex pheromone,L-isoleucine methyl ester (LIME). Analyses of the pheromone titers in the glands of field-collected females demonstrated the occurrence of peak levels of 48-hr (“circabidian”) periodicity. The levels of LIME in the glands of 45-day-old virgin females increased over three times from the scototo the photophase of a calling day, but the amounts of (R)-(−)-linalool did not significantly change. Virgin females had in average two times more LIME and 3.6 times more (R)-(−)-linalool than the average amount found in the field-captured beetles throughout the season.
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Leal, W.S., Sawada, M., Matsuyama, S. et al. Unusual periodicity of sex pheromone production in the large black chaferHolotrichia parallela . J Chem Ecol 19, 1381–1391 (1993). https://doi.org/10.1007/BF00984883
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DOI: https://doi.org/10.1007/BF00984883