Conspecific and Heterogeneric Lacewings Respond to (Z)-4-Tridecene Identified from Chrysopa formosa (Neuroptera: Chrysopidae)

Sándor Koczor, Ferenc Szentkirályi, József Vuts, John C. Caulfield, David M. Withall, John A. Pickett, Michael A. Birkett, Miklós Tóth

Research output: Contribution to journalArticle

Abstract

Green lacewings (Chrysopidae) are predators of soft-bodied pest insects and are among the most important biological control agents in crop protection. Chrysopa spp. are of special importance since, unlike most green lacewing species, adults are also predatory. The current study was undertaken in search of Chrysopa formosa compounds with semiochemical activity. Using coupled gas chromatography-electroantennography (GC-EAG), head and thorax extracts of C. formosa elicited EAG responses to a compound subsequently identified by coupled GC/mass spectrometry, microchemistry, chemical synthesis and GC peak enhancement as (Z)-4-tridecene. In field experiments, this compound decreased attraction of adult C. formosa to (1R,4aS,7S,7aR)-nepetalactol and that of Chrysoperla carnea species-complex to a ternary floral lure, with the inhibitory effect found to be dose-dependent. Our results suggest that (Z)-4-tridecene may serve as a general warning signal among multiple green lacewing species. Perspectives for potential practical applications are discussed.

Original languageEnglish
Pages (from-to)137-146
Number of pages10
JournalJournal of Chemical Ecology
Volume44
Issue number2
DOIs
Publication statusPublished - Feb 1 2018

Keywords

  • (1R,4aS,7S,7aR)-nepetalactol
  • (Z)-4-tridecene
  • Biological control
  • Chrysopa formosa
  • Chrysoperla carnea species-complex
  • Predator
  • Repellency
  • Synthetic ternary floral bait

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry

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