线虫动物门、腹毛动物门及轮虫动物门间的系统学研究

Systematic Study on Nematoda Phylum,Gastrotricha Phylum and Rotifera Phylum

用支序分析方法对线虫动物门、腹毛动物门和轮虫动物门三者之间的系统学进行了分析 ,结论是三者为一单系群 ,其中腹毛动物门和轮虫动物门为一对姐妹群 ,线虫动物门则是由三者的共同祖先较早地分出的另一支。由此我们认为 ,应将这三者合并为一新门合胞体动物门 (Syncytia) ,原来各门分别降为线虫纲、腹毛纲和轮虫纲 ;

This paper analyses the systematics between Nematoda phyllum,Gastrotricha phylum and Rotifera phylum by cladistics method. The conclusion is that these three parts belong to a monophyletic group,in which Gastrotricha phylum and Rotifera phylum are a sister group. Then,Nematoda Phylum is another branch which was earlier differentiated from the common ancestor of these three parts. For these reason, we think that these three parts should be merged into a new phylum, namely Syncytia. The original each phylum should be demoted separately:Nematoda class,Gastrotricha class and Rotifera class.Protocoelomata phylum this category should be discarded.