ABSTRACT In this work, the compatibility of the babassu and degummed soybean oils to Typhlodromus ornatus (Acari: Phytoseiidae) was evaluated through the integration of estimates of lethal concentration (LC) with non-lethal effects of repellency and population growth rate. Concentration-mortality bioassays showed that the babassu (LC50 = 5.03 μL/cm2) and degummed soybean oils (LC50 = 4.14 μL/cm2) were approximately 19 and 28 times less toxic to T. ornatus, respectively, in comparison to its prey Aceria guerreronis (Acari: Eriophyidae). Babassu oil was not repellent to T. ornatus, but the degummed soybean oil had a repellent effect at different concentrations and times of evaluation. Additional tests showed that regardless of the concentrations of the tested vegetable oil, the growth rate of T. ornatus was always positive. From the point of view of selectivity, babassu oil was more compatible with T. ornatus as it did not present repellency. We have concluded that both evaluated vegetable oils presented low risk to T. ornatus, and they are thus indicated as a promising tool to be integrated in management programmes to control A. guerreronis in coconut plantations.

中文翻译：

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巴巴苏和脱胶大豆油对捕食性螨 Typhlodromus ornatus（Acari：Phytoseiidae）的致死和亚致死作用

摘要 在这项工作中，通过将致死浓度 (LC) 的估计值与驱避性和人口增长率的非致死效应相结合，评估了巴巴苏和脱胶大豆油与斑马线虫 (Acari: Phytoseiidae) 的相容性。浓度-死亡率生物测定表明，与猎物 Aceria guerreronis 相比，巴巴苏 (LC50 = 5.03 μL/cm2) 和脱胶大豆油 (LC50 = 4.14 μL/cm2) 对 T. ornatus 的毒性分别低约 19 倍和 28 倍（螨：螨科）。巴巴苏油对T. ornatus没有驱避作用，但脱胶大豆油在不同浓度和评价时间下具有驱避作用。其他测试表明，无论测试植物油的浓度如何，T. ornatus 的生长速度始终为正。从选择性的角度来看，巴巴苏油与 T. ornatus 更相容，因为它没有排斥性。我们得出的结论是，经过评估的两种植物油对 T. ornatus 的风险较低，因此它们被认为是一种很有前途的工具，可以整合到控制椰子种植园中 A. guerreronis 的管理计划中。