源自18S rRNA序列的原口动物蠕虫的系统发育
Phylogeny of protostome worms derived from 18S rRNA sequences.
作者信息
Winnepenninckx B, Backeljau T, De Wachter R
机构信息
Department Biochemie, Universiteit Antwerpen (UIA), Belgium.
出版信息
Mol Biol Evol. 1995 Jul;12(4):641-9. doi: 10.1093/oxfordjournals.molbev.a040243.
The phylogenetic relationships of protostome worms were studied by comparing new complete 18S rRNA sequences of Vestimentifera, Pogonophora, Sipuncula, Echiura, Nemertea, and Annelida with existing 18S rRNA sequences of Mollusca, Arthropoda, Chordata, and Platyhelminthes. Phylogenetic trees were inferred via neighbor-joining and maximum parsimony analyses. These suggest that (1) Sipuncula and Echiura are not sister groups; (2) Nemertea are protostomes; (3) Vestimentifera and Pogonophora are protostomes that have a common ancestor with Echiura; and (4) Vestimentifera and Pogonophora are a monophyletic clade.
通过比较新的完整的18S rRNA序列（来自须腕动物门、螠虫动物门、星虫动物门、螠纲、纽形动物门和环节动物门）与现有的18S rRNA序列（来自软体动物门、节肢动物门、脊索动物门和扁形动物门），研究了原口动物蠕虫的系统发育关系。通过邻接法和最大简约法分析推断出系统发育树。这些结果表明：（1）星虫动物门和螠纲不是姐妹群；（2）纽形动物门是原口动物；（3）须腕动物门和螠虫动物门是与螠纲有共同祖先的原口动物；（4）须腕动物门和螠虫动物门是一个单系类群。
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