CLASS-LEVEL RELATIONSHIPS IN THE PHYLUM CNIDARIA - EVIDENCE FROM MITOCHONDRIAL GENOME STRUCTURE

被引:233
|
作者
BRIDGE, D [1 ]
CUNNINGHAM, CW [1 ]
SCHIERWATER, B [1 ]
DESALLE, R [1 ]
BUSS, LW [1 ]
机构
[1] YALE UNIV,DEPT GEOL & GEOPHYS,NEW HAVEN,CT 06511
关键词
ANTHOZOA; HYDROZOA; PHYLOGENY; SCYPHOZOA;
D O I
10.1073/pnas.89.18.8750
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 phylogenetic relationships of the Recent cnidarian classes remain one of the classic problems in invertebrate zoology. We survey the structure of the mitochondrial genome in representatives of the four extant cnidarian classes and in the phylum Ctenophora. We rind that all anthozoan species tested possess mtDNA in the form of circular molecules, whereas all scyphozoan, cubozoan, and hydrozoan species tested display mtDNA in the form of linear molecules. Because ctenophore and all other known metazoan mtDNA is circular, the shared occurrence of linear mtDNA in three of the four cnidarian classes suggests a basal position for the Anthozoa within the phylum.
引用
收藏
页码:8750 / 8753
页数:4
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