Identification of the aggregation-sex pheromone of Plagionotus arcuatus ssp. arcuatus (Coleoptera: Cerambycidae) from two geographically separated European populations

Zoltán Imrei, Mikael A. Molander, Inis B. Winde, Zsófia Lohonyai, Éva Bálintné Csonka, József Fail, Lawrence M. Hanks, Yunfan Zou, Jocelyn G. Millar, Miklós Tóth, Mattias C. Larsson

Research output: Contribution to journalArticle

Abstract

Plagionotus arcuatus ssp. arcuatus (L.) is a common saproxylic cerambycid beetle in most parts of Europe, and is designated as an occasional pest of oak wood that is stored outside during the summer months. In an effort to identify attractants that can be used for monitoring this species, we collected headspace samples from adult beetles and conducted field bioassays with the resulting compounds as potential aggregation-sex pheromone components for this species. Three compounds, (R)-3-hydroxyhexan-2-one, (R)-3-hydroxyoctan-2-one, and (R)-3-hydroxydecan-2-one, were consistently present in relatively large quantities in headspace extracts from male P. arcuatus populations in both Hungary and Sweden, regardless of the adsorbent media (activated charcoal or Porapak™ Q) used to sample beetle odors, or the type of solvent (hexane, diethyl ether, or dichloromethane) used to elute trapped volatiles from the collectors. None of the hydroxyketone and related compounds were detected in corresponding extracts from females. In field bioassays in both countries, the blend of the C 6 and C 10 compounds, and the ternary blend both attracted significantly more beetles than the control, while other combinations or single compounds were not significantly attractive. Males and females showed similar patterns of responses to treatments. Our results demonstrate that (R)-3-hydroxyhexan-2-one and (R)-3-hydroxydecan-2-one constitute a male-produced aggregation-sex pheromone of P. arcuatus, whereas the role of (R)-3-hydroxyoctan-2-one remains unclear. Lures with the pheromone could be developed for monitoring of P. arcuatus populations as an indicator of fresh oak wood resources.

Original languageEnglish (US)
Article number18
JournalScience of Nature
Volume106
Issue number5-6
DOIs
StatePublished - Jun 1 2019

Keywords

  • (R)-3-hydroxydecan-2-one
  • (R)-3-hydroxyhexan-2-one
  • (R)-3-hydroxyoctan-2-one
  • Clytini
  • Headspace sampling
  • Isomerization

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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    Imrei, Z., Molander, M. A., Winde, I. B., Lohonyai, Z., Csonka, É. B., Fail, J., Hanks, L. M., Zou, Y., Millar, J. G., Tóth, M., & Larsson, M. C. (2019). Identification of the aggregation-sex pheromone of Plagionotus arcuatus ssp. arcuatus (Coleoptera: Cerambycidae) from two geographically separated European populations. Science of Nature, 106(5-6), [18]. https://doi.org/10.1007/s00114-019-1612-2