Anthocoris nemoralis is the dominant predator of pear sucker (Cacopsylla pyri) in the UK. Anthocoris nemoralis migrates into orchards in spring or is introduced as a biocontrol agent, reaching peak population levels in July-August, contributing to effective control of summer pear sucker populations. However, due to temperature dependent development and metabolism there are concerns that C. pyri populations or feeding rates may increase due to changing climatic conditions. Thus, how A. nemoralis responds to temperature, impacts its ability as a biocontrol agent. Functional response assays, monitoring attack rate and handling time of A. nemoralis and behavioral assays, using Ethovision tracking software occurred, to assess the impact of temperature on predation. Experiments were conducted at current and future July-August mean temperatures, predicted using RCP4.5 and RCP8.5 (medium and high, representative concentration pathway) emissions scenarios, using 2018 UK Climate Projections (UKCP18). All treatments demonstrated a Type II functional response, with female anthocorids demonstrating shorter handling times and higher attack rates than males. Males showed longer prey handling times at 18 °C compared to 23 °C and more time was spent active at lower temperatures for both sexes. Females did not show significant differences in attack rate or handling time in response to temperature. Overall prey consumption was also not significantly affected by temperature for either sex. This study suggests that anthocorids are likely to remain effective natural enemies under future predicted temperatures, due to non-significant differences in prey consumption.

Anthocoris nemoralis是英国梨木鳅 ( Cacopsyllapyri )的主要捕食者。Anthocoris nemoralis在春季迁移到果园或作为生物防治剂引入，在 7 月至 8 月达到种群数量高峰，有助于有效控制夏季梨吸盘种群。然而，由于发育和新陈代谢依赖于温度，人们担心C.pyri种群或摄食率可能会因气候条件的变化而增加。因此，A. nemoralis对温度的反应会影响其作为生物防治剂的能力。使用 Ethovision 跟踪软件进行功能反应测定、监测A. nemoralis的攻击率和处理时间以及行为测定，以评估温度对捕食的影响。实验在当前和未来 7 月至 8 月的平均温度下进行，并使用 2018 年英国气候预测 (UKCP18)，使用 RCP4.5 和 RCP8.5（中高、代表性浓度路径）排放情景进行预测。所有治疗均表现出 II 型功能反应，雌性花环虫表现出比雄性更短的处理时间和更高的攻击率。与 23°C 相比，雄性在 18°C 下处理猎物的时间更长，并且雌雄在较低温度下活动的时间更长。雌性在对温度的反应中，攻击率或处理时间没有表现出显着差异。对于任何性别来说，总体猎物消耗量也没有受到温度的显着影响。这项研究表明，由于猎物消耗的不显着差异，在未来预测的温度下，花线虫很可能仍然是有效的天敌。