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Research article - Peer-reviewed, 2015

Olfactory responses of Drosophila suzukii females to host plant volatiles

Revadi, Santosh; Silvia, Vitagliano; Stacconi, Marco V. Rossi; Ramasamy, Sukanya; Mansourian, Suzan; Carlin, Silvia; Vrhovsek, Urska; Becher, Paul; Mazzoni, Valerio; Rota-Stabelli, Omar; Angeli, Sergio; Dekker, Teun; Anfora, Gianfranco


Drosophila suzukiiMatsumura, an endemic pest in southeast Asia, has invaded Europe and the U.S.A. Unlike most of its closely related sibling species, the serrated ovipositor of D. suzukii permits ovipositing in undamaged fresh fruits. In the present study, volatiles are identified from host plants that are potentially involved in D. suzukii host recognition and oviposition behaviour. It is shown that mated females are attracted to volatiles emitted from intact fruits. The antennally-active suite of compounds released from the fresh fruits is identified by gas chromatography coupled with electroantennographic detection, as well as gas chromatography-mass spectrometry. In olfactometer bioassays, mated females are significantly attracted to an electroantennographically active volatile, isoamyl acetate, when tested at 10 mu g of synthetic compound in a rubber septa, which has a release rate comparable to that of fresh fruits. In addition, a genomic survey shows that D. suzukii not only possesses the full repertoire of genes encoding odorant receptors activated by isoamyl acetate in D. melanogaster, but also that one of the genes, OR67a, is represented by five duplicated copies. These results indicate that D. suzukii uses olfactory cues to select oviposition sites. The identification of volatiles emitted by host fruits that attract D. suzukii may aid in the development of a selective and efficient synthetic lure for monitoring this pest. As a close relative of Drosophila melanogaster, D. suzukii provides a unique opportunity for understanding the physiological mechanisms involved in the shift of this species from use of rotten to ripe fruits for oviposition.


Isoamyl acetate; kairomones; odorant receptors; semiochemicals; spotted wing Drosophila

Published in

Physiological Entomology
2015, volume: 40, number: 1, pages: 54-64

Authors' information

Revadi, Santosh
Edmund Mach Foundation
Silvia, Vitagliano
Edmund Mach Foundation
Stacconi, Marco V. Rossi
Edmund Mach Foundation
Ramasamy, Sukanya
Edmund Mach Foundation
Mansourian, Suzan
Carlin, Silvia
Edmund Mach Foundation
Vrhovsek, Urska
Edmund Mach Foundation
Swedish University of Agricultural Sciences, Department of Plant Protection Biology
Mazzoni, Valerio
Edmund Mach Foundation
Rota-Stabelli, Omar
Edmund Mach Foundation
Angeli, Sergio
Free University of Bozen-Bolzano
Swedish University of Agricultural Sciences, Department of Plant Protection Biology
Anfora, Gianfranco
Edmund Mach Foundation

Associated SLU-program

SLU Network Plant Protection

UKÄ Subject classification

Evolutionary Biology

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