Phylogenetic relationships within the Class Anthozoa (Phylum Cnidaria) based on nuclear 18S rDNA sequences
Phylogenetic relationships within the Class Anthozoa (Phylum Cnidaria) based on nuclear 18S rDNA sequences
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DOI：
10.1006/mpev.1999.0649
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发表时间：
1999-11-01
影响因子：
4.1
通讯作者：
Mullineaux, LS
中科院分区：
文献类型：
--
作者：
Berntson, EA;France, SC;Mullineaux, LS
珊瑚和海葵（刺胞门：珊瑚虫纲）之间的分类关系是基于很少的形态学特征。任何给定特征的重要性都是有争议的，而且几乎没有化石记录可以用来推导进化关系。我们分析了完整的18S核糖体序列，以检查珊瑚虫的亚类水平和普通水平组织。我们认为Ceriantipatharia亚纲不是一个进化相关的类群。Corallimorpharia目为副系，与scleractinia目密切相关。18S rRNA基因可能不足以建立关于珊瑚科和Ceriantharia的特定关系以及Hexacorallia内各目分支序列的可靠系统发育假设。然而，18S rRNA基因具有足够的系统发育信号来区分花甲纲内的主要类群，我们利用这一信息来推测神秘分类群Dactylanthus和Dendrobrachia的关系。(C) 1999学术出版社。
Taxonomic relationships within the corals and anemones (Phylum Cnidaria: Class Anthozoa) are based upon few morphological characters. The significance of any given character is debatable, and there is little fossil record available for deriving evolutionary relationships. We analyzed complete 18S ribosomal sequences to examine subclass-level and ordinal-level organization within the Anthozoa. We suggest that the Subclass Ceriantipatharia is not an evolutionarily relevant grouping. The Order Corallimorpharia appears paraphyletic and closely related to the Order scleractinia. The 18S rRNA gene may be insufficient for establishing robust phylogenetic hypotheses concerning the specific relationships of the Corallimorpharia and the Ceriantharia and the branching sequence for the orders within the Hexacorallia. The 18S rRNA gene has sufficient phylogenetic signal, however, to distinguish among the major groupings within the Class Anthozoa, and we use this information to suggest relationships for the enigmatic taxa Dactylanthus and Dendrobrachia. (C) 1999 Academic Press.