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United States Department of Agriculture

Agricultural Research Service

Research Project: Integrated Pest Management for Insect Pests of Horticultural Crops

Location: Horticultural Crops Research

Title: Trap designs for monitoring Drosophila suzukii (Diptera: Drosophilidae))

Author
item Lee, Jana
item Shearer, Peter
item Barrantes, Luz
item Beers, Elizabeth
item Burrack, Hannah
item Dalton, Daniel
item Dreves, Amy
item Gut, Larry
item Hamby, Kelly
item Haviland, David
item Isaacs, Rufus
item Nielsen, Anne
item Richardson, Tamara
item Rodriguez-saona, Cesar
item Stanley, Cory
item Walsh, Doug
item Walton, Vaughn
item Yee, Wee
item Zalom, Frank
item Bruck, Denny

Submitted to: Environmental Entomology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 9/6/2013
Publication Date: 11/10/2013
Citation: Lee, J.C., Shearer, P., Barrantes, L.D., Beers, E.H., Burrack, H.J., Dalton, D.T., Dreves, A.J., Gut, L.J., Hamby, K.A., Haviland, D.R., Isaacs, R., Nielsen, A.L., Richardson, T., Rodriguez-Saona, C.R., Stanley, C.A., Walsh, D.B., Walton, V.M., Yee, W.L., Zalom, F.G., Bruck, D.J. 2013. Trap designs for monitoring Drosophila suzukii (Diptera: Drosophilidae). Environmental Entomology. 105:1350-1357.

Interpretive Summary: The spotted wing drosophila, an invasive pest of small and stone fruits, has been recently detected in 33 states of the U.S.A., and in Canada, Mexico, and Europe. This pest attacks ripening fruit causing economic losses including increased management costs and crop rejection. Ongoing research aims to improve the efficacy of monitoring traps. Studies were conducted to evaluate how physical trap features affect captures. We evaluated traps that varied by color, bait surface area, and position of the fly entry point. Studies were conducted at sixteen sites spanning seven states and provinces of North America and nine crop types. Apple cider vinegar was used as the standard bait in all trap types. Overall, red and yellow-colored traps caught more flies than white and clear traps, with black traps catching intermediate levels. The trap with a greater bait surface area caught slightly more flies than the trap with smaller area (90 vs. 40 cm2). Lastly, the two traps with a side mesh entry with or without a protective rain tent caught more flies than the trap with a top mesh entry.

Technical Abstract: Drosophila suzukii Matsumura, an invasive pest of small and stone fruits, has been recently detected in 33 states of the U.S.A., and in Canada, Mexico, and Europe. This pest attacks ripening fruit causing economic losses including increased management costs and crop rejection. Ongoing research aims to improve the efficacy of monitoring traps. Studies were conducted to evaluate how physical trap features affect captures of D. suzukii. Features under evaluation included color, bait surface area, and position of the fly entry point. Studies were conducted at sixteen sites spanning seven states and provinces of North America and nine crop types. Apple cider vinegar was used as the standard bait in all trap types. Overall, red and yellow-colored traps caught significantly more flies than white and clear traps, with black traps catching intermediate levels. The attractiveness of color may be influenced by crop type. Red traps caught more flies than clear or white traps when data were combined among sites with red-colored fruit. However, results should be further confirmed with studies where each crop type is replicated in a balanced design. As expected, the trap with a greater bait surface area caught more D. suzukii than the trap with smaller area (90 vs. 40 cm2). Lastly, the two traps with a side mesh entry with or without a protective rain tent caught more D. suzukii than the trap with a top mesh entry.

Last Modified: 8/24/2016
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