三北地区内陆盐水的轮虫

Rotifera from Inland Saline Waters in Northern China

1990～1991年间在三北地区盐度0.5～214 g/L的28个内陆水体采集了浮游轮虫水样。共检出59种轮虫。根据出现率和平均密度,下列13种是所调查盐水轮虫区系的主要种类:褶皱臂尾轮虫、角突臂尾轮虫、壶状臂尾轮虫、变异臂尾轮虫、盖氏晶囊轮虫、矩形龟甲轮虫、螺形甲龟轮虫、爱德里亚狭甲轮虫、方尖削叶轮虫、一种单趾轮虫、针簇多肢轮虫、长三肢轮虫和环顶巨腕轮虫。文中讨论了内陆盐水轮虫的种类组成、分布和盐度耐性,以及盐度、碱度、pH、离子系数与种类多样性之间的关系等问题。

Collection of planktonic rotifera were made from 28 inland saline water bodies ranging from 0. 57-214 g/L in salinity in northern China during 1990-1991. Fifty-nine species of Rotifera were identified.According to the frequency of occurrence and the mean density, the important species are: Brachionus plicatilis, B. angularis, B. urceus, B. variabilis, Asplanchna girodi, Keratella quadrata, K. cochlearis, Colurella adriabitica, Notholca acuminata quadrata, Monostyla sp. , Polyarthra trigla, Filinia longiseta, and Pedalia fennica.The species composition, distribution and salinity tolerance of rotifera from inland saline waters, as well as the relationships between salinity, alkalinity, pH, ratio of monovalent to divalent ions and species diversity were discussed.