Development of an Attract-and-Kill Strategy for Drosophila suzukii (Diptera: Drosophilidae): Evaluation of Attracticidal Spheres Under Laboratory and Field Conditions.
Drosophila suzukii Matsumura (Diptera: Drosophilidae) is an invasive, polyphagous fruit fly that attacks soft-skinned fruits. Originally from Asia, D. suzukii has successfully invaded the United States and the European and South American countries. At present, calendar-based insecticide applications are used to combat D. suzukii. Here, we evaluate a behaviorally based attract-and-kill management technique using attracticidal spheres to reduce D. suzukii infestations in raspberries. In laboratory bioassays aimed at identifying effective toxicants, attracticidal spheres containing dinotefuran at 1.0% a.i. killed 100% of D. suzukii within 5 min. Spinetoram, spinosad, permethrin, lambda-cyhalothrin (CS) and lambda-cyhalothrin (WG), all at 1.0% a.i., killed 100% of D. suzukii within 24 h. In field trials, statistically equivalent infestation rates were recorded in raspberry plots protected by attracticidal spheres containing 1.0% a.i. spinetoram compared with standard weekly insecticide applications. In field trials using 1.0% a.i. dinotefuran, attracticidal spheres decreased D. suzukii infestations compared with control plots, but insecticide applications were more effective at reducing D. suzukii infestations, although differences in harvesting practices likely affected fly population densities and infestation rates in both years. Attracticidal spheres effectively attract and kill D. suzukii and reduce infestations rates under field conditions, indicating that this behavioral strategy holds promise in D. suzukii management.
USDA-ARS, Appalachian Fruit Research Station, 2217 Wiltshire Road, Kearneysville, WV 25430 2771 (ricekevinb@gmail.com; brent.short@ars.usda.gov; tracy.leskey@ars.usda.gov).
Kevin B
KB
Rice
USDA-ARS, Appalachian Fruit Research Station, 2217 Wiltshire Road, Kearneysville, WV 25430 2771 (ricekevinb@gmail.com; brent.short@ars.usda.gov; tracy.leskey@ars.usda.gov).
Brent D
BD
Short
USDA-ARS, Appalachian Fruit Research Station, 2217 Wiltshire Road, Kearneysville, WV 25430 2771 (ricekevinb@gmail.com; brent.short@ars.usda.gov; tracy.leskey@ars.usda.gov).
Tracy C
TC
Leskey
D000818:Animals; D000069601:Crop Protection / Q000295:instrumentation / Q000379:methods*; D004330:Drosophila / Q000187:drug effects*; D004338:Drug Combinations; D006146:Guanidines / Q000494:pharmacology; D007300:Insect Control / Q000379:methods; D007306:Insecticides / Q000494:pharmacology*; D018942:Macrolides / Q000494:pharmacology; D000073943:Neonicotinoids; D009574:Nitro Compounds / Q000494:pharmacology; D065856:Rubus; D014903:West Virginia
D004338:Drug Combinations; D006146:Guanidines; D007306:Insecticides; D018942:Macrolides; D000073943:Neonicotinoids; D009574:Nitro Compounds; C465368:dinotefuran; C415329:spinosad; C548262:spinetoram
IPM; Spotted wing drosophila; attract-and-kill; attracticidal sphere; invasive species