title: Field Evaluation of an Oviposition Deterrent for Management of Spotted-Wing Drosophila, Drosophila suzukii, and Potential Nontarget Effects.
abstract: Spotted-wing drosophila, Drosophila suzukii Matsumura (Diptera: Drosophilidae), is a polyphagous, invasive pest of small fruits. Current management relies heavily on chemical insecticides, and an effective oviposition deterrent could contribute to alternative management approaches that reduce the need for these chemical insecticides. A novel deployment method for repelling Drosophila suzukii, thereby reducing D. suzukii oviposition in fall-bearing red raspberry, was evaluated in the field. Infestations occurring within 4 d after deployment were significantly lower in 2-m-long plots (Rubus idaeus 'Caroline') treated with the repellent (20% 1-octen-3-ol in specialized pheromone and lure application technology [SPLAT]) compared to control plots (blank SPLAT). Repellent-treated plots had roughly 28.8 and 49.5% fewer offspring reared per gram of fruit than control plots in two experiments, respectively. Nontarget effects were also evaluated in 2-m plot experiments as well as 5- by 5-m plot experiments. There were no differences in the number of parasitic hymenoptera trapped on yellow sticky cards hung in repellent compared to control plots. While there were no differences in the number of visits to raspberry flowers observed by honey bees in repellent versus control plots, the number of visits by bumble bees was greater in repellent plots compared to control plots. Challenges regarding evaporation rates and potential uses for repellents in an integrated pest management program for the control of D. suzukii are discussed.
authors.affiliation: Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (akw52@cornell.edu; hlc66@cornell.edu; gb222@cornell.edu; mtb245@cornell.edu; gme1@cornell.edu) annawllngfrd@gmail.com.
authors.forename: Anna K
authors.initials: AK
authors.lastname: Wallingford
authors.affiliation: Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (akw52@cornell.edu; hlc66@cornell.edu; gb222@cornell.edu; mtb245@cornell.edu; gme1@cornell.edu).
authors.forename: Heather L
authors.initials: HL
authors.lastname: Connelly
authors.affiliation: Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (akw52@cornell.edu; hlc66@cornell.edu; gb222@cornell.edu; mtb245@cornell.edu; gme1@cornell.edu).
authors.forename: Gabrielle
authors.initials: G
authors.lastname: Dore Brind'Amour
authors.affiliation: Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (akw52@cornell.edu; hlc66@cornell.edu; gb222@cornell.edu; mtb245@cornell.edu; gme1@cornell.edu).
authors.forename: Matthew T
authors.initials: MT
authors.lastname: Boucher
authors.affiliation: ISCA Technologies, Inc., 1230 Spring St., Riverside, CA 92507 (president@iscatech.com).
authors.forename: Agenor
authors.initials: A
authors.lastname: Mafra-Neto
authors.affiliation: Cornell University, New York Agricultural Experiment Station, 630 W. North St., Geneva, NY 14456 (akw52@cornell.edu; hlc66@cornell.edu; gb222@cornell.edu; mtb245@cornell.edu; gme1@cornell.edu).
authors.forename: Greg M
authors.initials: GM
authors.lastname: Loeb
mesh_terms: D000818:Animals; D004330:Drosophila / Q000502:physiology; D005260:Female; D006790:Host-Parasite Interactions / Q000187:drug effects; D007300:Insect Control; D007302:Insect Repellents; D009812:Odorants / Q000032:analysis; D010058:Oviposition / Q000187:drug effects*; D054817:Pollination / Q000187:drug effects; D065856:Rubus / Q000254:growth & development; D014863:Wasps / Q000187:drug effects* / Q000502:physiology
chemical_list: D007302:Insect Repellents
keywords: 1-octen-3-ol; parasitic hymenoptera; pollinator; repellent