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Relations of the new phylum Cycliophora

机译:新门环植物的关系

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The Cycliophora is the most recently described animal phylum and is based on a single species, Symbion pandora, which was discovered on the mouthparts of the Norway lobster Nephrops norvegicus. Because only a few morphological data are available for Symbion, the precise nature of its phylogenetic relationships is highly controversial. Here we present a phylogenetic analysis of 18S ribosomal RNA sequence data, including a new Symbion sequence, which places Symbion in a lophophorate-aschelminth-protostome clade and which suggests a sister-group relationship between Cycliophora and a Rotifera-Acanthocephala clade.
机译:Cycliophora是最近描述的动物门,以单一物种Symbion pandora为基础,该物种在挪威龙虾Nephrops norvegicus的口器上发现。因为只有少数形态数据可用于Symbion,所以其系统发育关系的确切性质引起了极大争议。在这里,我们介绍了18S核糖体RNA序列数据的系统发育分析,包括一个新的Symbion序列,该序列将Symbion放置在一个磷光体-天青石-原生动物进化枝中,并暗示了Cycliophora和Rotifera-Acanthocephala进化枝之间的姐妹群关系。

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