共 29 条
More than 1000 ultraconserved elements provide evidence that turtles are the sister group of archosaurs
被引:257
作者:
Crawford, Nicholas G.
[1
]
Faircloth, Brant C.
[2
]
McCormack, John E.
[3
]
Brumfield, Robb T.
[3
,4
]
Winker, Kevin
[5
]
Glenn, Travis C.
[6
,7
]
机构:
[1] Boston Univ, Dept Biol, Boston, MA 02215 USA
[2] Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA
[3] Louisiana State Univ, Museum Nat Sci, Baton Rouge, LA 70803 USA
[4] Louisiana State Univ, Dept Biol Sci, Baton Rouge, LA 70803 USA
[5] Univ Alaska Museum, Fairbanks, AK 99775 USA
[6] Univ Georgia, Dept Environm Hlth Sci, Athens, GA 30602 USA
[7] Univ Georgia, Georgia Genom Facil, Athens, GA 30602 USA
基金:
美国国家科学基金会;
关键词:
turtles;
ultraconserved elements;
phylogenomics;
evolution;
archosaurs;
PHYLOGENETIC POSITION;
MITOCHONDRIAL;
PHYLOGENOMICS;
SEQUENCES;
LINEAGES;
GENOMES;
CHOICE;
D O I:
10.1098/rsbl.2012.0331
中图分类号:
Q [生物科学];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
We present the first genomic-scale analysis addressing the phylogenetic position of turtles, using over 1000 loci from representatives of all major reptile lineages including tuatara. Previously, studies of morphological traits positioned turtles either at the base of the reptile tree or with lizards, snakes and tuatara (lepidosaurs), whereas molecular analyses typically allied turtles with crocodiles and birds (archosaurs). A recent analysis of shared microRNA families found that turtles are more closely related to lepidosaurs. To test this hypothesis with data from many single-copy nuclear loci dispersed throughout the genome, we used sequence capture, high-throughput sequencing and published genomes to obtain sequences from 1145 ultraconserved elements (UCEs) and their variable flanking DNA. The resulting phylogeny provides overwhelming support for the hypothesis that turtles evolved from a common ancestor of birds and crocodilians, rejecting the hypothesized relationship between turtles and lepidosaurs.
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页码:783 / 786
页数:4
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