In search of co-attractants for cetoniin scarabs (Coleoptera: Scarabaeidae, Cetoniinae): identification and preliminary field evaluation of volatiles from fermenting apple

A - Papers appearing in refereed journals

Vuts, J., Lohonyai, Z., Imrei, Z., Balintne Csonka, E., Birkett, M. A. and Toth, M. 2019. In search of co-attractants for cetoniin scarabs (Coleoptera: Scarabaeidae, Cetoniinae): identification and preliminary field evaluation of volatiles from fermenting apple. Acta Phytopathologica Entomologica Hungarica. 54 (2), pp. 229-242. https://doi.org/10.1556/038.54.2019.020

AuthorsVuts, J., Lohonyai, Z., Imrei, Z., Balintne Csonka, E., Birkett, M. A. and Toth, M.
Abstract

When applied in funnel traps, the known three-component floral lure of Cetonia a. aurata and Potosia cuprea attracts large numbers of beetles. Further increasing the attractive power of these traps offers the opportunity to develop a more potent mass-trapping tool that directly reduces local scarab populations and, hence, fruit damage. The current study was initiated by the observation of adult beetles aggregating and feeding in large numbers on ripening fruit, accompanied by the presence of fermentation volatiles detectable by the
human nose. Addition of apple pieces to the ternary C. aurata aurata / P. cuprea lure resulted in increased catches, but only in traps where the apple fermented as a result of beetle feeding. Volatile extracts collected from fermenting apple were subjected to GC-EAG, and bioactive peaks were identified as 1-hexanol, acetic acid, n-butyric acid, isovaleric acid, hexanoic acid and 3-methylphenol by GC-MS and GC peak enhancement. In preliminary field trials, a synthetic mixture of all identified compounds reduced activity of the ternary lure, indicating that some were inhibitory. As certain individual compounds or their particular combinations enhanced activity of the ternary lure only numerically, further experiments are discussed to optimize a synergistic
blend of fruit fermentation and/or beetle-derived volatiles.

KeywordsCetoniinae; Attractant; Mass-trapping; Fermentation volatiles; Scarab; Fruit
Year of Publication2019
JournalActa Phytopathologica Entomologica Hungarica
Journal citation54 (2), pp. 229-242
Digital Object Identifier (DOI)https://doi.org/10.1556/038.54.2019.020
Open accessPublished as non-open access
FunderBBSRC Industrial Strategy Challenge
Funder project or codeBBSRC Strategic Programme in Smart Crop Protection
Output statusPublished
Publication dates
OnlineDec 2019
Publication process dates
Accepted13 Mar 2019
ISSN0238-1249

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