Erythritol, an artificial sweetener, has shown promise as an organic, human-safe insecticide. Recently, erythritol applications were shown to be successful at controlling pear psylla (Cacopsylla pyricola (Förster)) (Hempitera: Psyllidae), the most important pest of pear in the Pacific Northwest, USA. Twospotted spider mite (Tetranychus urticae Koch) (Trombidiformes: Tetranychidae) and pear rust mite (Epitrimerus pyri (Nalepa)) (Trombidiformes: Eriophyidae) can also be highly damaging pear pests. Their common natural enemy, Galendromus occidentalis (Nesbitt) (Mesostigmata: Phytoseiidae), can provide biological control if selective pesticides are used for managing other pests. Through a series of bioassays, we sought to determine whether erythritol could also be used for controlling either species of pest mite. We also examined whether erythritol had acute or sublethal impacts on G. occidentalis, through a variety of exposure methods. Effects examined included mortality, fecundity, prey consumption, and locomotion. We determined that a high concentration of erythritol (30%) had efficacy against both pest mite species and caused arresting behavior in twospotted spider mite. Erythritol caused little acute mortality in G. occidentalis, but did reduce fecundity and prey consumption through some exposure methods. Through motion-capture software, we determined that this is primarily due to reduced movement, likely caused by difficulty walking on residues and excessive grooming behavior. Because the predatory mite non-target effects were less acute than those for the two pest mites, we concluded that erythritol could likely be integrated into pear IPM with little or no disruption of mite biological control.

中文翻译：

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赤藓糖醇是一种人造甜味剂，对害螨具有杀螨作用，对捕食性螨虫的危害最小

赤藓糖醇是一种人造甜味剂，已显示出作为一种有机的、对人类安全的杀虫剂的前景。最近，赤藓糖醇的应用被证明成功地控制了美国太平洋西北部最重要的梨木虱 (Cacopsylla pyricola (Förster)) (Hempitera: Psyllidae)。双斑叶螨 (Tetranychus urticae Koch) (Trombidiformes: Tetranychidae) 和梨锈螨 (Epitrimerus pyri (Nalepa)) (Trombidiformes: Eriophyidae) 也是高度破坏性的梨害虫。如果使用选择性杀虫剂来管理其他害虫，它们的共同天敌 Galendromus occidentalis (Nesbitt) (Mesostigmata: Phytoseiidae) 可以提供生物防治。通过一系列生物测定，我们试图确定赤藓糖醇是否也可用于控制任一种类的害虫螨。我们还通过各种暴露方法检查了赤藓糖醇是否对 G. occidentalis 有急性或亚致死影响。检查的影响包括死亡率、繁殖力、猎物消耗和运动。我们确定高浓度的赤藓糖醇 (30%) 对两种害螨都有效，并导致双斑叶螨的逮捕行为。赤藓糖醇在 G. occidentalis 中几乎没有引起急性死亡率，但通过一些暴露方法确实降低了繁殖力和猎物消耗量。通过动作捕捉软件，我们确定这主要是由于运动减少，可能是由于在残留物上行走困难和过度梳理行为造成的。因为捕食性螨类的非目标效应不如两种害虫螨类的影响那么严重，