Molecular Phylogenetic Analysis of Acotylea (Platyhelminthes: Polycladida)
Molecular Phylogenetic Analysis of Acotylea (Platyhelminthes: Polycladida)
复制标题
子叶纲（扁形动物：Polycladida）的分子系统发育分析
作者：
Yukihisa Oya;H. Kajihara
无子叶是多枝纲（杆形目，扁形动物）的一个亚目，其特征是在身体的腹面上缺乏子叶（吸盘状结构）。我们新近测定了12科14属24种无子叶植物的两个线粒体基因（16S核糖体RNA和细胞色素c氧化酶亚基I）和两个核基因（18S和28S核糖体RNA）的部分序列。基于这些序列，除了那些在公共数据库中，我们推断出的16个科和27属的Acotoylea从分子系统发育分析（最大似然和贝叶斯推断）的基础上串联的基因序列。我们的分析支持三个分支对应Discoceloidea，Leptoplanoidea和Stylochoidea。Callioplanidae的系统发育位置仍不清楚。在科或属级分类群中，Gnesiocerotidae，Stylochoplanidae和Comoplana不是单系的。本文讨论了脊鲵科和Koinostylochus的有效性，以及Mirostylochus的科级分配。
Acotylea is a suborder of Polycladida (Rhabditophora, Platyhelminthes) characterized by lack of a cotyl (sucker-like structure) on the ventral surface of the body. We newly determined partial sequences of two mitochondrial (16S ribosomal RNA and cytochrome c oxidase subunit I) and two nuclear (18S and 28S ribosomal RNA) genes from 24 acotylean species (12 families and 14 genera). Based on these sequences in addition to those available in public databases, we inferred the phylogeny of 16 families and 27 genera of Acotylea from molecular phylogenetic analyses (maximum likelihood and Bayesian inference) based on concatenated gene sequences. Our analyses supported three clades corresponding to Discoceloidea, Leptoplanoidea, and Stylochoidea. The phylogenetic position of Callioplanidae remains unclear. Among family- or genus-level taxa, Gnesiocerotidae, Stylochoplanidae, and Comoplana were not monophyletic. We discuss the validities of Notocomplanidae and Koinostylochus, and the family-level assignment of Mirostylochus.
影响因子：
6.5
作者：
Chernomor O;von Haeseler A;Minh BQ
通讯作者：
Minh BQ