山东省东平湖轮虫种类组成研究

在东平湖设６个采样点，分别于枯、丰及平水期采样调查，共获轮虫５２种，隶属３亚目１０科２６属，其中４７种为东平湖轮虫记录，整个轮虫群落中，优势种１５种，普通种２４种，偶见种１３种，平均密度６８８个／Ｌ，调查结果表明，东平湖受到不同程度污染，属富营养型湖泊。

On Composition of Rotifera in Dongping Lake of Shandong Province

Six sampling spots were set up in the Dongping Lake to collect water sample in the low, middle and high water level period separately for investigation of rotifera species . 52 species of rotifera were collected . These species are subordinate to 3 suborders, 10 families, 26 genera, in which there are 47 species belonging to the new ones . In the whole community of ro- tifera there are 15 superior species, 24 common species and 13 rare species. The average density is 688 ind . / L . The investigating results showed the Dongping Lake is polluted in different degree, belonging to a rich nutrient lake .