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Video Q&A ViewAttendees 1

Plant-Insect Ecosystems

10-Minute Paper

P-IE: Invasive Species On-Demand Presentations

Erythritol field trials for SWD, Drosophila suzukii

On-Demand
On-Demand
Spotted-wing drosophila (SWD) is a serious pest of small fruits and cherries.  Erythritol is a non-caloric sugar consumed by humans with insecticidal properties against SWD.  Lab and greenhouse assays reveal that erythritol is toxic to SWD causing osmolar imbalance, mortality and reduced oviposition.  Also, combining erythritol with a phagostimulant such as sucrose or sucralose can increase efficacy.  We conducted field studies spraying erythritol formulations on blueberry bushes and cherry trees to evaluate subsequent pest suppression.  Specifically, we compared the infestation rates on fruits, adults captured in baited traps, and eggs laid on fruit among treated and untreated fruit.  Given that pollinators may visit sprayed fruit, we compared the number of visiting honeybees between treatments.