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1 August 2014 Effect of Trap Design, Bait Type, and Age on Captures of Drosophila suzukii (Diptera: Drosophilidae) in Berry Crops
Lindsy E. Iglesias, Teresia W. Nyoike, Oscar E. Liburd
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Abstract

Field experiments were conducted in commercial southern highbush blueberries and wild blackberries to evaluate the attractiveness of different trap designs, bait types, and bait age on captures of the spotted wing drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae). During the 2012 trap design study, the five treatments evaluated were four 1-liter clear plastic cup traps (with and without a yellow visual stimulus or odorless dish detergent) and the fifth treatment was a Pherocon AM yellow sticky card trap. Cup traps were baited with 150 ml of apple cider vinegar (ACV) and the Pherocon AM trap had a 7.4-ml glass vial containing ACV. In 2013, the Pherocon AM yellow sticky card was omitted because of low spotted wing drosophila captures in 2012. The four treatments evaluated were four 1-liter cup traps with and without a yellow visual stimulus. One cup trap (with a yellow stimulus) was baited with yeast sugar in place of ACV and the other cup traps were baited with ACV. In both years, there were no differences in spotted wing drosophila captures among cup traps baited with ACV with and without yellow visual stimulus. However, the cup trap baited with yeast sugar and yellow visual stimulus captured more spotted wing drosophila than the ACV-baited cup traps irrespective of visual stimulus or detergent. In another study, four baits including 1) ACV, 2) yeast sugar mixture, 3) yeast flour mixture (yeast, sugar, water, whole wheat flour, and ACV), and 4) wine vinegar mixture (rice vinegar and merlot wine) were evaluated in a commercial blueberry planting using 1-liter clear plastic cup traps (as described above). The experiment was repeated in wild blackberries but the yeast flour bait was replaced with ACV merlot wine sugar. Results indicated that the two yeast baits captured significantly more spotted wing drosophila and more nontarget organisms than the vinegar baits. In the final study, although we found that the attraction of ACV and yeast sugar to spotted wing drosophila did not change with bait age, the attraction to other Drosophilidae flies decreased with age. The ease of implementing a trap-and-lure system for spotted wing drosophila is discussed.

© 2014 Entomological Society of America
Lindsy E. Iglesias, Teresia W. Nyoike, and Oscar E. Liburd "Effect of Trap Design, Bait Type, and Age on Captures of Drosophila suzukii (Diptera: Drosophilidae) in Berry Crops," Journal of Economic Entomology 107(4), 1508-1518, (1 August 2014). https://doi.org/10.1603/EC13538
Received: 9 December 2013; Accepted: 1 April 2014; Published: 1 August 2014
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KEYWORDS
bait
blueberry
spotted wing drosophila
yeast
Zaprionus indianus
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