title: Screening of Repellents against Vespid Wasps.
abstract: Vespid wasps are ecologically beneficial, but they can be a nuisance and dangerous to people due to their tendency to sting. Here, the aim was to screen samples of volatiles (i.e., essential oils and pure chemicals) for their repellency against wasps. The number of wasps (mainly Vespula vulgaris) present in a glass box with attractant and 5 µL sample was compared to the number of wasps in a similar box with attractant only. Both boxes were connected to a large glass container harboring 18-35 wasps. Among 66 tested samples, some essential oils from Lamiaceae and Asteraceae, as well as some pure natural compounds such as the monoterpenes (-)-terpinen-4-ol and isopulegol showed a significant repellency against vespids. Our results corroborate the potential of (mixtures of) volatiles in repelling these insects.
authors.affiliation: Service Entomology, Royal Belgian Institute of Natural Sciences, Rue Vautier 29, Brussels B-1000, Belgium. jean-luc.boeve@naturalsciences.be.
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Boevé
authors.affiliation: Oystershell Laboratories, Booiebos 24, Drongen B-9031, Belgium. d@oystershell.com.
authors.forename: Kris
authors.initials: K
authors.lastname: Honraet
authors.affiliation: Oystershell Laboratories, Booiebos 24, Drongen B-9031, Belgium. bart.rossel@Oystershell.com.
authors.forename: Bart
authors.initials: B
authors.lastname: Rossel
keywords: Mentha; Vespidae; Vespula; essential oils; laboratory testing; repellent; volatiles