安徽南漪湖浮游动物的物种多样性研究

Diversity of the Zooplankton in Nanyi Lake of Anhui

对安徽南漪湖浮游动物的群落结构特征、种类组成、物种多样性进行了初步研究,旨在为其渔业资源保护和合理开发利用提供科学依据。研究结果表明:浮游动物共89种,其中原生动物23属34种,占总种数的38.20%;轮虫23属37种,占总种数的41.57%;枝角类11属15种,占总种数的16.85%;桡足类3种,占3.37%。优势种因季节而异,主要有累枝虫、螺形龟甲轮虫、针簇多枝轮虫、象鼻溞、終椤8∮味镒罡呱锪砍鱿衷谙募?主要是由于枝角类大量出现;生物密度最高量出现在2004年春季,主要是因为原生动物大量出现。

In order to protect fishery resources and provide scientific basis for development, the preliminary research on zooplankton of Nanyi I.ake in Anhui was made. The investigation of zooplankton had been carried out from July 2003 to April 2004.Water samples in each season were collected except winter because lhe lake dried up. 89 species of zooplankton were found, including 34 species of Protozoa（38.20%）; 37 species of Rotifera（41.576%）； 15 species of Cladocera（16.85%）;3 species of Copepoda and hold（3.37% ）. The advanlage species were Dif flugia, Polyarthra trigla , Keratella cochlearis, Bosinina longirostris and Cyclops differing with the season. The highesl biomass emerge in summer because of the large amounl of Cladocera. The highest density took place in spring, 2004 as the result of the large number of Protozoa.