【摘要】 轮虫(特别是臂尾轮虫)是浮游动物群落的重要组成部分和优势类群,它们之间的种间竞争是调节水生态系统结构和功能的主要动力之一。影响臂尾轮虫种间竞争结局的因素主要包括食物资源的种类和数量、竞争轮虫的相对个体大小、起始密度及晶囊轮虫等捕食者对其选择性捕食等生物因子,以及温度、竞争轮虫释放的化感物质及水环境污染物等非生物因子。已有的相关研究大多只涉及单一或两种因子对两种臂尾轮虫的种间竞争的影响,而关于多因子对多种臂尾轮虫种间竞争的研究还很不足。可通过模拟自然水体中的多因子及其随季节变化的波动开展不同臂尾轮虫种间竞争的实验室研究,并结合野外研究,可为臂尾轮虫乃至浮游动物的种间竞争结局和机理研究提供更多的基础资料。更多还原

【Abstract】 Rotifers,especially Brachionidae,are important components and dominant groups of zooplankton communities. Interspecific competition among rotifers is one of major driving forces regulating structure and function of aquatic ecosystems. The main factors determining the outcomes of interspecific competition between or among Brachionidae rotifers include biotic factors such as type and quantity of food resources,relative size,initial population density,reproductive strategy of competing rotifers,and selective predation by Asplanchna as well as abiotic factors such as temperature,allelopathic substances released by competing rotifers,and water pollutants.However,most of the related studies only involve the effect of one or two factors on the interspecific competition of two Brachionidae rotifers. The research on the interspecific competition of multiple factors on multiple Brachionidae rotifers is still insufficient. In addition to field researches,laboratory studies of the interspecific competition among different Brachionidae rotifer species could be carried out by simulating multiple factors and their seasonal fluctuation in natural water bodies,which can provide more basic data for the research of interspecific competition of Brachionidae rotifers,even zooplankton.更多还原