Abstract Spotted-wing drosophila (Drosophila suzukii Matsumura) is a major pest of soft-skinned fruit and due to the low infestation tolerance for marketable fruit, growers take preventive actions to hinder spotted-wing drosophila damages. Insecticides application is one of the measures taken by growers. Although intensive spraying programs have been used to manage spotted-wing drosophila, its early infestation, rapid reproduction, and vast range of host have caused damage to still occur in fruit, including tart cherries, Prunus ceraus (Linnaeus). Therefore, there is a merit for information on insecticide's curative activity to understand whether sprays manage spotted-wing drosophila individuals within infested fruit. Tart cherry fruit were exposed to spotted-wing drosophila adults for 3 d. After this infestation period, insecticides were applied 1 and 3 d later. Small larvae, large larvae, and pupae were counted 9 d after initial infestation. A parallel set of insecticide-treated tart cherries were subjected to residue analysis. Phosmet and spinetoram were able to reduced live spotted-wing drosophila counts compared with the control at all life stages and insecticide application times, whereas zeta-cypermethrin, acetamiprid, and cyantraniliprole were less consistent in reducing spotted-wing drosophila numbers. Chromobacterium subtsugae demonstrated no curative action. Residue analysis demonstrated that zeta-cypermethrin residues mostly remained on fruit surface. Small portions of phosmet, spinetoram, and cyantraniliprole were able to penetrate fruit surfaces and move into subsurface tissues. Acetamiprid was the only compound which >47% penetrated into the fruit subsurface consistently across both years. Curative activity demonstrated in this study can provide additional tactics for spotted-wing drosophila management in tart cherry Integrated Pest Management (IPM) programs.

中文翻译：

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用于控制酸樱桃生产中的斑点翅果蝇（双翅目：果蝇科）的杀虫剂的治疗活性

摘要 斑翅果蝇（Drosophila suzukii Matsumura）是软皮水果的主要害虫，由于对适销水果的侵染耐受性低，种植者采取预防措施来阻止斑翅果蝇的危害。施用杀虫剂是种植者采取的措施之一。斑翅果蝇虽已采用密集喷药管理，但其侵染早、繁殖快、寄主范围广等特点，在果实中仍存在危害，包括酸樱桃、樱桃李(Linnaeus)。因此，有关杀虫剂治疗活性的信息有助于了解喷雾剂是否能控制受感染水果中的斑点翅果蝇个体。酸樱桃果实暴露于斑翅果蝇成虫 3 天。在这个侵扰期过后，1 天和 3 天后施用杀虫剂。小幼虫、大幼虫和蛹在初次侵染后 9 d 计数。对一组平行的经杀虫剂处理的酸樱桃进行残留分析。在所有生命阶段和杀虫剂施用时间，与对照相比，Phosmet 和多杀菌素能够减少活斑翅果蝇数量，而 zeta-氯氰菊酯、啶虫脒和氰虫酰胺在减少斑翅果蝇数量方面不太一致。枯草色杆菌没有表现出治愈作用。残留分析表明，zeta-氯氰菊酯残留主要残留在果实表面。小部分亚磷酰胺、多杀菌素和氰虫酰胺能够穿透水果表面并进入次表面组织。啶虫脒是唯一一种 > 47% 在两年内始终如一地渗入水果地下。本研究中展示的治疗活动可以为酸樱桃综合害虫管理 (IPM) 计划中的斑翅果蝇管理提供额外的策略。