Zoophytophagous arthropods can elicit plant defense responses affecting potential prey beyond predation. Phytophagy prevails as the main trigger for these responses, as in the case of Euseius stipulatus (Athias-Henriot) (Mesostigmata: Phytoseiidae), a predator occurring in citrus. Because other triggers cannot be excluded, our aim was to examine whether other phytoseiids co-occurring with E. stipulatus but not engaged in plant feeding [Neoseiulus californicus (McGregor) and Phytoseiulus persimilis Athias-Henriot] could induce similar responses (in terms of herbivore induced plant volatiles, HIPVs, and main defensive pathways), and how these affected the behavior of conspecifics and the shared prey, Tetranychus urticae Koch (Prostigmata: Tetranychidae). N. californicus triggered plant genotype-specific defense responses, including the production of different HIPVs compared to clean plants. However, we could not observe these effects for P. persimilis. T. urticae avoided better protected plants, because of stronger direct or indirect defense. As plants with weaker direct defense levels should offer higher prey densities, and those harboring conspecific predators represent higher risk of cannibalism, predators were expected to behave similarly. However, they did not. Our results demonstrate that plant defense triggered by phytoseiids is species-specific, depend on plant genotype and can be triggered by non-feeding activities. As N. californicus is a highly efficient predator used worldwide, further studies with this species are needed. Likewise, cineol, one of the volatiles identified in the blends triggered by this phytoseiid, could be used to manipulate the prey. These studies could pave the way for a more efficient use of phytoseiids in agroecosystems.

食虫性节肢动物可以引起植物防御反应，从而影响捕食以外的潜在猎物。植食是这些反应的主要诱因，例如在柑橘类中捕食的Euseius stipulatus（Athias-Henriot）（Mesostigmata：Phytoseiidae）。因为其他触发器不能排除，我们的目的是检查是否其它phytoseiids与同现E. stipulatus但不从事植物馈送[香瓜小新绥加利福尼亚小（麦格雷戈）和Phytoseiulus螨阿蒂亚斯-亨里厄特]可诱导类似的反应（在草食动物的术语诱导的植物挥发物，HIPV和主要防御途径），以及它们如何影响物种和共享猎物Tetranychus urticae的行为科赫（Prostigmata：Tetranychidae）。加利福尼亚猪笼草触发了植物基因型特异性防御​​反应，包括与干净植物相比产生不同的HIPV。但是，我们无法观察到柿果的这些影响。由于更强的直接或间接防御能力，荨麻疹避免了更好的保护植物。由于直接防御力较弱的植物应提供更高的猎物密度，而带有同种捕食者的植物则代表更高的食人性风险，因此预计捕食者的行为类似。但是，他们没有。我们的结果表明，由植物拟南芥触发的植物防御具有物种特异性，取决于植物的基因型，并且可以由非摄食活动触发。如加州猪笼草是世界范围内使用的高效捕食者，需要对该物种进行进一步的研究。同样，桉树油是这种植物杀虫剂引发的混合物中鉴定出的挥发物之一，可用于操纵猎物。这些研究可以为在农业生态系统中更有效地使用植物杀螨剂铺平道路。