Global warming and pesticide contamination are two stressors of high concern, but their combined effects on freshwater biota are controversial. This study investigated the combined effects of warming and imidacloprid (IMI) on survival (measured as life expectancy at hatching), reproduction (net reproductive rate), population growth (intrinsic rate of population increase) and sexual reproduction (proportion of sexual offspring) of Brachionus calyciflorus using a life table experiment. The results showed that compared with controls, treatments with IMI at 50–100 mg/L significantly decreased survival, reproduction and population growth of the rotifers at 20℃. The inhibiting effect at higher IMI concentrations on survival increased with increasing temperatures, but those on reproduction and population growth increased only when the temperature increased from 25℃ to 30℃. The proportion of sexual offspring decreased with increasing temperatures. When monitoring the ecological effects of pollutants, environmental temperature and the possible adaptation of rotifers to it should be taken into consideration.

全球变暖和农药污染是两个备受关注的压力因素，但它们对淡水生物群的综合影响存在争议。本研究调查了变暖和吡虫啉 (IMI) 对存活率（以孵化时的预期寿命衡量）、繁殖（净繁殖率）、种群增长（种群内在增长率）和有性繁殖（有性后代的比例）的综合影响萼花臂尾草使用生命表实验。结果表明，与对照相比，50~100 mg/L的IMI处理显着降低了轮虫在20℃时的存活、繁殖和种群生长。较高浓度的IMI对生存的抑制作用随温度升高而增强，但对繁殖和种群生长的抑制作用仅在温度从25℃升高到30℃时增强。有性后代的比例随着温度的升高而降低。在监测污染物的生态影响时，应考虑环境温度和轮虫可能对其的适应。