The responses of arthropods to thermal stress are vital in ecological studies in order to understand survival, development, and reproduction. However, this subject is poorly addressed. In the order Mesostigmata, an abundance of species lives in the soil. Among these species, Stratiolaelaps scimitus (Womersley) is a predator used in the control of pest organisms that live in the soil. Mites of this species are commercialized in several countries, including Brazil, presenting efficiency in pest control in several crops. The objective of this study was to evaluate the effect of thermal shock on S. scimitus females, as well as to monitor the temperature variation in the environment. For each temperature, 80 experimental units were assembled for different periods (0.5, 1, 2, and 4 h). Experimental units were maintained at 25 °C, after exposure of the mites. Mortality and oviposition were evaluated. The results showed a 40% reduction in the survival of mites exposed to 37 °C for 4 h, compared to the control treatment (25 °C). Oviposition was less affected at 1 h exposure to temperatures of 19 and 12 °C and thermic fluctuation was observed in the greenhouse, especially inside the slabs. Understanding temperature effects in mites and the thermic fluctuation in the environment is essential to achieve satisfactory results in biological control. It is important to observe the scenario in which predatory mites will be released as these aspects are decisive in predatory activity.

为了了解生存，发育和繁殖，节肢动物对热胁迫的反应在生态研究中至关重要。但是，这个问题没有得到很好的解决。按照Mesostigmata的顺序，大量物种生活在土壤中。在这些物种中，Stratiolaelaps scimitus（Womersley）是一种捕食动物，用于控制生活在土壤中的有害生物。该物种的螨虫在包括巴西在内的多个国家/地区进行了商业化处理，从而在几种作物的害虫防治中发挥了有效作用。这项研究的目的是评估热冲击对弯刀链球菌的影响。女性，以及监视环境中的温度变化。对于每个温度，在不同的时间段（0.5、1、2和4小时）组装80个实验单元。螨暴露后，将实验单位保持在25°C。评估死亡率和产卵。结果表明，与对照处理（25°C）相比，暴露于37°C 4小时的螨的存活率降低了40％。在暴露于19和12°C的温度下1 h，产卵的影响较小，并且在温室中，尤其是在平板内部，观察到热波动。了解螨的温度效应和环境中的热波动对于在生物学控制中获得令人满意的结果至关重要。