Benzaldehyde Synergizes the Response of Female Xyleborinus saxesenii (Coleoptera: Curculionidae, Scolytinae) to Ethanol

Journal of Economic Entomology
Chang Yeol YangHyeong-Hwan Kim

Abstract

The ambrosia beetle, Xyleborinus saxesenii Ratzeburg (Coleoptera: Curculionidae, Scolytinae), infests physiologically stressed apple and peach trees in Korea. Dispersing females utilize the degradation product ethanol and host-related volatiles to locate and colonize new host trees. We examined the extent to which 12 chemicals emitted from fruit trees act synergistically with ethanol to attract X. saxesenii. The addition of benzaldehyde to ethanol significantly increased beetle attraction, although benzaldehyde was not attractive by itself. The addition of (-)-α-pinene, ethyl butyrate, ethyl isovalerate, (R)-(+)-limonene, 3-methyl-1-butanol, ethyl tiglate, (+)-aromadendrene, vanillin, 2-butanol, styrene, or ethyl 3,3-dimethylacrylate to ethanol had no effect on beetle attraction. In a dose-response test, the addition of 5-50% benzaldehyde doses synergistically increased the number of beetle captures; however, trap catches did not increase as the benzaldehyde dosage increased. The synergistic influence of benzaldehyde on beetle response to ethanol was lower in early spring than in late summer to early fall, probably because synthetic benzaldehyde emissions from field lures were overwhelmed by background levels of natural benzald...Continue Reading

References

Feb 19, 2004·Journal of Chemical Ecology·Jaime C Piñero, Ronald J Prokopy
Mar 19, 2009·Journal of Chemical Ecology·Daniel R Miller, Robert J Rabaglia

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