吸管虫是特化程度极高的一大类污附、周丛生原生动物，在水体微食物网内的物质循环与能量流动、水产养殖病害学、环境生物学中扮演重要角色。然而，由于多种原因，该类群长期以来在全球范围内一直都是研究和了解最少的类群之一，而在我国及东亚地区的研究几乎完全空白。本项目拟以我国浙江东部的沿岸各类生境为采样点，运用电镜、银染技术等分类学手段结合标记性基因信息的采集和分析，开展对其形态分类学、群落结构与时空分布特征、有关种类的DNA库构建及亚纲内各科目级核心类群的分子系统发育探讨。主要目标包括：（1）形成我国华东地区吸管虫区系研究的首份本底资料；（2）填补我国及全球范围内对该类群研究的相关空白；（3）为病害学、生态学及环境资源学等相关领域的研究提供一份第一手的重要素材；（4）形成国内首份该类动物物种多样性的档案资料；（5）也为完善国际原生动物基因库中相关标记基因信息提供建设性贡献。

The suctorid protozoa is a large group of highly particular and differentiated organism, which is periphytic and adept in pollutant absorption. They play very important roles in many fields, e.g. material cycle and energy flow of micro-food-loop, aquaculture disease, environmental biology. However, due to several reasons, this group is seriously poorly-known all through the world and has never been investigated in Chinese and East Asian area. The current research will be focusing on the suctorid group collected from coastal and fresh waters of the east of Zhejiang Province. The tanoxomy, community structure, spatial and temporal distribution, DNA bank construction, and molecular systematics will be studied using morphological, morphogenetic, and molecular analytical modern methods. The main purposes are: (1) to supply the first basic data about these poorly known forms in East China; (2) to fill in the gaps of research of this special group in China and even the whole word; (3) to contribute to the related fields, such as aquaculture disease, ecology and environmental resource science; (4) to form the first archives files of suctorid biodiversity; (5) in addition, this work will make a significant contribution to the improvement of GenBank database.