The Rare North American Cerambycid Beetle Dryobius sexnotatus Shares a Novel Pyrrole Pheromone Component with Species in Asia and South America

Natalie M. Diesel, Yunfan Zou, Todd D. Johnson, Donald A. Diesel, Jocelyn G. Millar, Judith A. Mongold-Diers, Lawrence M. Hanks

Research output: Contribution to journalArticle

Abstract

The compound 1-(1H–pyrrol-2-yl)-1,2-propanedione (“pyrrole”) is an important pheromone component of several Asian and South American species of longhorned beetles in the subfamily Cerambycinae. Here, we report the first confirmed identification of this compound as a pheromone component of a cerambycine species native to North America, the rare beetle Dryobius sexnotatus Linsley. Headspace volatiles from males contained (R)-3-hydroxyhexan-2-one and pyrrole (ratio 1:0.13), neither of which were detected in samples from a female. A field bioassay confirmed that adults of both sexes were attracted only to the binary blend of racemic 3-hydroxyhexan-2-one plus pyrrole, and not by either compound alone. Adults of another cerambycine, Xylotrechus colonus (F.), were attracted by 3-hydroxyhexan-2-one, consistent with this compound being the primary component of the pheromone of this species; attraction was not influenced by the presence of pyrrole. This study attests to the effectiveness of pheromone-baited traps in capturing rarely encountered species of cerambycids. It also provides further evidence that pyrrole represents another conserved pheromone motif within the Cerambycinae, now having been found in representatives of five cerambycid tribes from three continents.

Original languageEnglish (US)
Pages (from-to)739-744
Number of pages6
JournalJournal of Chemical Ecology
Volume43
Issue number8
DOIs
StatePublished - Aug 1 2017

Keywords

  • Aggregation-sex pheromone
  • Cerambycidae
  • Invasive species
  • Longhorned beetle
  • Reproductive isolation
  • Sex pheromone

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry

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