Relations of the new phylum Cycliophora

被引:50
作者
Winnepenninckx, BMH
Backeljau, T
Kristensen, RM
机构
[1] Royal Belgian Inst Nat Sci, B-1000 Brussels, Belgium
[2] Univ Copenhagen, Zool Museum, DK-2100 Copenhagen, Denmark
关键词
D O I
10.1038/31377
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
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 norvegicus1. Because only a few morphological data1,2,3 are available for Symbion, the precise nature of its phylogenetic relationships is highly controversial2,4,5. 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.
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收藏
页码:636 / 638
页数:3
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