本研究以常见的浮游动物萼花臂尾轮虫为模式生物，探讨了环境pH是否可诱导萼花臂尾轮虫母体效应的发生。我们观测了萼花臂尾轮虫母代分别在酸性、碱性胁迫环境中暴露后，其子代再次面临相同胁迫环境时的生活史性状，并以母代在正常环境生活，子代分别暴露于酸性、中性、碱性环境的处理组作为对照，每个处理组6个重复。实验结果显示，在酸性胁迫下，母代受过胁迫组在世代时间这个参数上的均值显著低于对照组。在碱性胁迫下，实验组与对照组在混交率、净增值率、种群增长率、世代时间上相比均没有显著差异，没有表现出母体效应。

This study investigated if pH could induce maternal effect in the rotifer Brachionus calyciflorus. We examined life history traits of the offspring exposed in stressful pH environments similar with those of their mothers. As a control, we also measured life history traits of the offspring reared under stressful or suitable environments, but from mothers lived in suitable pH conditions. Each treatment group had six replicates. The results showed that the offspring exposed in acid stress environment from acid stressed mother had significantly shorter generation time than the same acid stressed offspring whose mother lived in normal environment. On the other hand, no significant differences in mictic rate, net reproductive rate, population growth rate and generation time between the treatment and control groups under alkaline stress environment. No maternal effect was found in pH stressful environment of the rotifer