Cahenzli, Fabian and Daniel, Claudia (2016) Different baits and bait amendments to attract Drosophila suzukii. Bericht FiBL. Forschungsinstitut für biologischen Landbau (FiBL) .
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Drosophila suzukii is a major pest of soft fruits. Baited traps are widely used for monitoring and mass trapping: different commercial baits, different recipes for home-made baits as well as several literature references on attractive compounds are available.
In a series of 15 laboratory experiments we compared the attractiveness of different baits for D. suzukii: the commercially available Dros’attract (Biobest Belgium NV) and the Gasser-bait (Biologische Becherfalle für die Kirschessigfliege Drosophila suzukii; Riga AG), a 4-Component-attractant (Cha et al., 2013) and a self-made wine-vinegar-bait (50 % water, 40 % apple cider vinegar, 10 % red wine, 0.05 % acetone, 0.0125 % soap). Furthermore, we tested if different bait amendments (β-Cyclocitral, acetoin, methionol, acetone) could increase bait attractiveness.
Commercial baits (Dros’attract, Gasser-bait) and home-made mixtures based on red wine and vinegar, differed only slightly in attractiveness to D. suzukii. Fruit producers therefore have the possibility to mix cost efficient baits by themselves. However, efficacy of home-made baits might depend on quality of red wine as well as on quality of apple cider vinegar. Additional experiments are needed to test if all types of wine have a similar attractiveness. The synthetic baits (4-component-attractant (Cha et al., 2013)) and bait amendments (β-Cyclocitral (Keesey et al., 2015)) proposed in literature references were less attractive than the full wine-vinegar mixtures. Adding acetoin and methionol (Cha et al., 2013) to a full wine-vinegar mixture did not increase attractiveness, maybe because the mixture itself already contained these substances and was therefore attractive enough. Adding 0.05 % or 0.005 % acetone, however, significantly increased bait attractiveness, but reaction of flies was highly dosage dependent. At high concen-trations (5%), acetone had a repellent effect. The ideal concentration of acetone for field uses has to be evaluated in future studies.
|Subjects:|| Crop husbandry > Production systems > Fruit and berries|
Crop husbandry > Crop health, quality, protection
Crop husbandry > Production systems > Fruit and berries > Viticulture
|Research affiliation:||Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Plant Protection and Biodiversity|
|Deposited By:||Cahenzli, Dr. Fabian|
|Deposited On:||04 Mar 2016 14:43|
|Last Modified:||04 Mar 2016 16:26|
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