Bayesian tip dating reveals heterogeneous morphological clocks in Mesozoic birds

doi:10.1098/rsos.182062

	Bayesian tip dating reveals heterogeneous morphological clocks in Mesozoic birds
	Zhang, Chi 1,2; Wang, Min 1,2
刊名	ROYAL SOCIETY OPEN SCIENCE
	2019-07-26
卷号	6 期号:7 页码:9
关键词	Mesozoic birds tip dating relaxed clock MrBayes
ISSN号	2054-5703
DOI	10.1098/rsos.182062
通讯作者	Zhang, Chi(zhangchi@ivpp.ac.cn)
英文摘要	Recently, comprehensive morphological datasets including nearly all the well-recognized Mesozoic birds became available, making it feasible for statistically rigorous methods to unveil finer evolutionary patterns during early avian evolution. Here, we exploited the advantage of Bayesian tip dating under relaxed morphological clocks to estimate both the divergence times and evolutionary rates while accounting for their uncertainties. We further subdivided the characters into six body regions (i.e. skull, axial skeleton, pectoral girdle and sternum, forelimb, pelvic girdle and hindlimb) to assess evolutionary rate heterogeneity both along the lineages and across partitions. We observed extremely high rates of morphological character changes during early avian evolution, and the clock rates are quite heterogeneous among the six regions. The branch subtending Pygostylia shows an extremely high rate in the axial skeleton, while the branches subtending Ornithothoraces and Enantiornithes show notably high rates in the pectoral girdle and sternum and moderately high rates in the forelimb. The extensive modifications in these body regions largely correspond to refinement of the flight capability. This study reveals the power and flexibility of Bayesian tip dating implemented in MrBayes to investigate evolutionary dynamics in deep time.
资助项目	100 Young Talents Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41722202]
WOS关键词	EVOLUTION ; TIME ; PHYLOGENY ; RADIATION ; DISPARITY ; MODULES ; FOSSILS ; ORIGIN ; RECORD ; RATES
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	ROYAL SOC
WOS记录号	WOS:000479146300014
资助机构	100 Young Talents Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/10148]
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Zhang, Chi
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Chi,Wang, Min. Bayesian tip dating reveals heterogeneous morphological clocks in Mesozoic birds[J]. ROYAL SOCIETY OPEN SCIENCE,2019,6(7):9.
APA	Zhang, Chi,&Wang, Min.(2019).Bayesian tip dating reveals heterogeneous morphological clocks in Mesozoic birds.ROYAL SOCIETY OPEN SCIENCE,6(7),9.
MLA	Zhang, Chi,et al."Bayesian tip dating reveals heterogeneous morphological clocks in Mesozoic birds".ROYAL SOCIETY OPEN SCIENCE 6.7(2019):9.