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Composition of Strawberry Floral Volatiles and their Effects on Behavior of Strawberry Blossom Weevil, Anthonomus rubi

Mozuraitis, Raimondas; Hall, David; Trandem, Nina; Ralle, Baiba; Tunström, Kalle; Sigsgaard, Lene; Baroffio, Catherine; Fountain, Michelle; Cross, Jerry; Wibe, Atle and Borg-Karlson, Anna-Karin (2020) Composition of Strawberry Floral Volatiles and their Effects on Behavior of Strawberry Blossom Weevil, Anthonomus rubi. Journal of Chemical Ecology, 46 (11), pp. 1-13.

[thumbnail of Mozūraitis2020_Article_CompositionOfStrawberryFloralV.pdf] PDF - Published Version - English

Document available online at: https://link.springer.com/article/10.1007/s10886-020-01221-2#citeas


The strawberry blossom weevil (SBW), Anthonomus rubi, is a major pest in strawberry fields throughout Europe. Traps baited with aggregation pheromone are used for pest monitoring. However, a more effective lure is needed. For a number of pests, it has been shown that the attractiveness of a pheromone can be enhanced by host plant volatiles. The goal of this study was to explore floral volatile blends of different strawberry species (Fragaria x ananassa and Fragaria vesca) to identify compounds that might be used to improve the attractiveness of existing lures for SBW. Floral emissions of F. x a. varieties Sonata, Beltran, Korona, and of F. vesca, were collected by both solid-phase microextraction (SPME) and dynamic headspace sampling on Tenax. Analysis by gas chromatography/mass spectrometry showed the floral volatiles of F. x ananassa. and F. vesca were dominated by aromatic compounds and terpenoids, with 4-methoxybenzaldehyde (p-anisaldehyde) and α-muurolene the major compounds produced by the two species, respectively. Multi-dimensional scaling analyses separated the blends of the two species and explained differences between F. vesca genotypes and, to some degree, variation between F. x ananassa varieties In two-choice behavioral tests, SBW preferred odors of flowering strawberry plants to those of non-flowering plants, but weevils did not discriminate between odors from F. x ananassa and F. vesca flowering plants. Adding blends of six synthetic flower volatiles to non-flowering plants of both species increased the preference of SBW for these over the plants alone. When added individually to non-flowering plants, none of the components increased the preference of SBW, indicating a synergistic effect. However, SBW responded to 1,4-dimethoxybenzene, a major component of volatiles from F. viridis, previously found to synergize the attractiveness of the SBW aggregation pheromone in field studies.

EPrint Type:Journal paper
Keywords:Anthonomus rubi, Fragaria x ananassa, Fragaria vesca, Floral odors, Semiochemicals, Pest control
Subjects: Crop husbandry > Production systems > Fruit and berries
Crop husbandry > Crop health, quality, protection
Research affiliation: Switzerland > Agroscope
Denmark > KU - University of Copenhagen
Latvia > Latvian Plant Protection Research Centre
Norway > NIBIO – Norwegian Institute of Bioeconomy Research
Norway > NORSØK - Norwegian Centre for Organic Agriculture
Sweden > KTH Royal Institute of Technology
Sweden > University of Stockholm
UK > East Malling Research
UK > Natural Resources Institute (NRI Uni Greenwich)
Deposited By: Wibe, Dr Atle
ID Code:38508
Deposited On:19 Oct 2020 06:10
Last Modified:19 Oct 2020 06:10
Document Language:English
Refereed:Peer-reviewed and accepted

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