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Interactions between syn - and anti -2,3-hexanediol lures on trap catches of woodboring beetles and associates in southeastern United States.

Formally Refereed
Download (PDF 612 KB): https://research.fs.usda.gov/download/treesearch/63999.pdf

Abstract

In 2016, we conducted three experiments to clarify the effects of 2,3-hexanediols isomers on trap catches ofNeoclytus acuminatus (F.) (Coleoptera: Cerambycidae). We also noted the effects of the isomers on trap catchesof other cerambycids and associated species of predators and competitors. Catches of N. acuminatus in trapsbaited with ethanol + syn-2,3-hexanediol + racemic 3-hydroxyoctan-2-one were reduced with the addition ofanti-2,3-hexanediol, an attractant for Curius dentatus Newman (Coleoptera: Cerambycidae). A fourth experimentconducted in 2017 verified that racemic 3-hydroxyoctan-2-one increases catches of N. acuminatus in traps baitedwith ethanol + syn-2,3-hexanediol. The addition of anti-2,3-hexanediol increased catches of Knulliana cincta (Drury)(Coleoptera: Cerambycidae) in traps baited with ethanol + racemic 3-hydroxyoctan-2-one, whereas attraction ofNeoclytus scutellaris (Olivier) to traps baited with ethanol + racemic 3-hydroxyhexan-2-one was reduced by syn-2,3-hexanediol. Trap catches of the beetle predators Chariessa pilosa (Forster), Enoclerus ichneumonus (F.), andMadoniella dislocata (Say) (Coleoptera: Cleridae) were affected by 2,3-hexanediol isomers, whereas other commonpredators were unaffected by the isomers. Attraction of the bostrichid Xylobiops basilaris (Say) (Coleoptera:Bostrichidae) was increased by the 2,3-hexanediols; the relative effect of the two isomeric blends was dependent ontrap co-baits of 3-hydroxy-2-ketones. The two enantiomeric blends of 2,3-hexanediol had minimal effects on catchesof most species of ambrosia beetles, whereas the 3-hydroxy-2-ketones affected trap catches of some species.

Citation

Miller, D R; Crowe, C M; Mayo, P D; Silk, P J; Sweeney, J D. 2022. Interactions between syn - and anti -2,3-Hexanediol lures on trap catches of woodboring beetles and associates in southeastern United States . Environmental Entomology. 51(1): 83-93. https://doi.org/10.1093/ee/nvab111.
Citations