实验二十七 浮游动物和底栖动物的水质监测 附录Ⅰ 常见水生浮游动物检索 1．原生动物 原生动物亚界包括7 个门，在淡水中营自由生活的种类主要属于肉鞭门和纤毛门。 原生动物亚界门和纲检索表 1．营养期以伪足或鞭毛为行动工具肉鞭门 Sarcomastigophora 2 ································································································································································································································································································································································································································································································································································································································································营养期间以纤毛为行动工具纤毛门 Ciliophora 5 2．营养期以鞭毛为行动工具鞭毛亚门 Mastiophora 3 营养期间以伪足为行动工具肉足亚门 Sarcodina 4 3．有绿的色素体，但也有无色的植鞭纲 Phytomastigophorea 决不会有绿的色素体动鞭纲 Zoomastigophorea 4．伪足叶状、指状或丝状，无轴丝根足总纲 Rhizopoda 伪足呈辐射状，有轴丝辐足总纲 Actinopoda 5．胞口位于顶端、亚顶端或中腹部，无口旁纤毛动基片纲Kinetofragminophorea 胞口常位于腹面或靠近前端，口部纤毛系统有口旁纤毛膜6 6．...
