Sampson B J, Marshall D A, Smith B J, Stringer S J, Werle C T, Magee D J, Adamczyk J J
USDA-ARS Thad Cochran Southern Horticultural Laboratory, 810 Hwy., 26 West, Poplarville, MS 39470 (
J Econ Entomol. 2017 Apr 1;110(2):530-534. doi: 10.1093/jee/tow307.
We report on the efficacy of 0.5 M (61,000 ppm) erythritol (E) in Truvia Baking Blend, 10 ppm lufenuron (L), and their combination (LE) to reduce egg and larval densities of wild populations of Drosophila suzukii (Matsumura) infesting fields of rabbiteye blueberries (Vaccinium virgatum) and blackberries (Rubus sp.). Formulations included the active ingredients (lufenuron, erythritol, or both), sugar (in control and erythritol treatments), and Dawn hand-soap applied to plants with pressurized 3-gallon garden spray tanks. The three chemical treatments (E, L, and LE) had no effect on D. suzukii ovipositing in blackberry and blueberry fruit, but they did reduce larval infestation by 75%, particularly densities of first and second instars. Erythritol and lufenuron were equally efficacious compounds as a D. suzukii ovicide and larvicide, but they did not display additive or synergistic activity. Extremely high larval mortality in control fruits show an age structure heavily skewed toward egg output.
我们报告了甜菊糖烘焙混合物中0.5 M（61,000 ppm）赤藓糖醇（E）、10 ppm虱螨脲（L）及其组合（LE）对侵染兔眼蓝莓（Vaccinium virgatum）和黑莓（Rubus sp.）田的铃木果蝇（Matsumura）野生种群卵和幼虫密度的降低效果。制剂包括活性成分（虱螨脲、赤藓糖醇或两者）、糖（对照和赤藓糖醇处理中），以及用3加仑压力式花园喷雾罐施用于植物的多用途清洁剂。三种化学处理（E、L和LE）对铃木果蝇在黑莓和蓝莓果实上产卵没有影响，但它们确实使幼虫侵染减少了75%，尤其是一龄和二龄幼虫的密度。赤藓糖醇和虱螨脲作为铃木果蝇杀卵剂和杀幼虫剂的效果相当，但它们没有表现出相加或协同活性。对照果实中极高的幼虫死亡率显示出年龄结构严重偏向于产卵。
