山东省东平湖轮虫种类组成研究

On Composition of Rotifera in Dongping Lake of Shandong Province

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种为东平湖轮虫新记录。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。

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 .