Mesozoic retroposons reveal parrots as the closest living relatives of passerine birds

被引:144
作者
Suh, Alexander [1 ]
Paus, Martin [1 ]
Kiefmann, Martin [1 ]
Churakov, Gennady [1 ]
Franke, Franziska Anni [2 ,3 ]
Brosius, Juergen [1 ]
Kriegs, Jan Ole [1 ,4 ]
Schmitz, Juergen [1 ]
机构
[1] Univ Munster, Inst Expt Pathol ZMBE, D-48149 Munster, Germany
[2] Univ Leipzig, Inst Biol 2, D-04103 Leipzig, Germany
[3] Auburn Univ, Dept Biol Sci, Auburn, AL 36849 USA
[4] Westfal Landesmuseum Planetarium, LWL Museum Nat Kunde, D-48161 Munster, Germany
来源
NATURE COMMUNICATIONS | 2011年 / 2卷
关键词
PHYLOGENY; EVOLUTION; SONG; ELEMENTS; GENOME; SINES; EXPRESSION; SEQUENCES; REPTILES; NEOAVES;
D O I
10.1038/ncomms1448
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 relationships of passerines (such as the well-studied zebra finch) with non-passerine birds is one of the great enigmas of avian phylogenetic research, because decades of extensive morphological and molecular studies yielded highly inconsistent results between and within data sets. Here we show the first application of the virtually homoplasy-free retroposon insertions to this controversy. Our study examined similar to 200,000 retroposon-containing loci from various avian genomes and retrieved 51 markers resolving early bird phylogeny. Among these, we obtained statistically significant evidence that parrots are the closest and falcons the second-closest relatives of passerines, together constituting the Psittacopasserae and the Eufalconimorphae, respectively. Our new and robust phylogenetic framework has substantial implications for the interpretation of various conclusions drawn from passerines as model organisms. This includes insights of relevance to human neuroscience, as vocal learning (that is, birdsong) probably evolved in the psittacopasseran ancestor, >30 million years earlier than previously assumed.
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页数:7
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