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Conspecific and heterogeneric lacewings respond to (Z)-4-tridecene identified from Chrysopa formosa (Neuroptera: Chrysopidae)

Koczor, Sándor, Szentkirályi, Ferenc, Vuts, József, Caulfield, John C., Withall, David M., Pickett, John, Birkett, Michael A. and Tóth, Miklós 2018. Conspecific and heterogeneric lacewings respond to (Z)-4-tridecene identified from Chrysopa formosa (Neuroptera: Chrysopidae). Journal of Chemical Ecology 44 (2) , pp. 137-146. 10.1007/s10886-017-0920-2

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Springer
ISSN: 0098-0331
Date of First Compliant Deposit: 14 February 2018
Date of Acceptance: 29 January 2018
Last Modified: 26 Jan 2019 02:30
URI: http://orca.cf.ac.uk/id/eprint/109113

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