【摘要】 1993年4月－1994年1月研究了太湖梅梁湾湖区纤毛虫的群落分布．共检出7目19属．根据TSI指标，该湖区可分为富营养型和中营养型水域，在富营养型水域中分布着特有的纤毛虫种类，纤毛虫的多度和生物量与富营养状态有显著相关性，因此，可作为湖泊富营养化的指示群落，本研究中纤毛虫的主要类群寡毛目和缘名目的生物量与TSI值存在正相关，随TSI（chla）值的升高而增大，寡毛目一般是贫营养型水域的主要优势群落。富营养型水域内的纤毛虫的个体体积大于中营养型水域的纤毛虫，且有显著差异。更多还原

【Abstract】 The distribtltion of ciliated protozoans was studied in Meiliang Bay of Taihu Lake from Apr.1993 to Jan. 1994. 7 orders and 19 genus were recorded. On the basis of the trophic state index [TSI(chla)]. the study area was separated into mesotrophic and eutriphic regions. Some of the genus were restricted to eutrophic situations, such as: Paramecium spp., Euplotes spp., Actinobolina spp., Didinium spp., Dileptus spp., Carchesium spp. Opisthostyla spp. The mean monthly abundance and biomass of total ciliates were positively correlated with the trophlc gradient. Ciliated protozoan was a good indicative community for the lake eutrophication. The orders (Oligotrichida and Peritrichida) dominated the ciliate assemblages and incresed with the rising of the TSI(Chla). Oligotrichida was mainly dominant in the mesotrophic region. The mean volume of the ciliated protozoans in eutrophic lake region was larger than that in the mesotrophic region with significant difference.更多还原