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Title:   Author  item
                                            Lee, Janaitem
                                            SHEARER, PETER - Oregon State Universityitem
                                            BARRANTES, LUZ - Washington State Universityitem
                                            BEERS, ELIZABETH - Washington State Universityitem
                                            BURRACK, HANNAH - North Carolina State Universityitem
                                            DALTON, DANIEL - Oregon State Universityitem
                                            DREVES, AMY - Oregon State Universityitem
                                            GUT, LARRY - Michigan State Universityitem
                                            HAMBY, KELLY - University Of Californiaitem
                                            HAVILAND, DAVID - University Of California - Cooperative Extension Serviceitem
                                            ISAACS, RUFUS - Michigan State Universityitem
                                            NIELSEN, ANNE - Rutgers Universityitem
                                            RICHARDSON, TAMARA - University Of North British Columbiaitem
                                            RODRIGUEZ-SAONA, CESAR - Rutgers Universityitem
                                            STANLEY, CORY - University Of Floridaitem
                                            WALSH, DOUG - Washington State Universityitem
                                            WALTON, VAUGHN - Oregon State Universityitem
                                            Yee, Weeitem
                                            ZALOM, FRANK - University Of Californiaitem
                                            BRUCK, DENNY - Dupont Pioneer Hi-Bred
  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.


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