Morphological Data Sets Fit a Common Mechanism Much More Poorly than DNA Sequences and Call Into Question the Mkv Model

doi:10.1093/sysbio/syy077

IVPP-IR > 中科院古脊椎所（2000年以后）

	Morphological Data Sets Fit a Common Mechanism Much More Poorly than DNA Sequences and Call Into Question the Mkv Model
	Goloboff, Pablo A.1; Pittman, Michael 2; Pol, Diego 3; Xu, Xing4
	2019-05-01
发表期刊	SYSTEMATIC BIOLOGY
ISSN	1063-5157
卷号	68 期号:3 页码:494-504
摘要	The Mkv evolutionary model, based on minor modifications to models of molecular evolution, is being increasingly used to infer phylogenies from discrete morphological data, often producing different results from parsimony. The critical difference between Mkv and parsimony is the assumption of a "common mechanism" in the Mkv model, with branch lengths determining that probability of change for all characters increases or decreases at the same tree branches by the same exponential factor. We evaluate whether the assumption of a common mechanism applies to morphology, by testing the implicit prediction that branch lengths calculated from different subsets of characters will be significantly correlated. Our analysis shows that DNA (38 data sets tested) is often compatible with a common mechanism, but morphology (86 data sets tested) generally is not, showing very disparate branch lengths for different character partitions. The low levels of branch length correlation demonstrated for morphology (fitting models without a common mechanism) suggest that the Mkv model is too unrealistic and inadequate for the analysis of most morphological data sets.
关键词	Bayesian analysis Mkv model morphological data phylogenetics
DOI	10.1093/sysbio/syy077
关键词[WOS]	PHYLOGENETIC ANALYSIS ; MAXIMUM PARSIMONY ; LIKELIHOOD ; EVOLUTION
收录类别	SCI
语种	英语
资助项目	National Science Foundation of China[41688103] ; Consejo Nacional de Investigaciones Cientificas y Tecnicas[PUE0070] ; National Science Foundation ; National Aeronautics and Space Agency ; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo ; Research Grant Council of Hong Kong's GeneralResearch Fund[17103315] ; University of Hong Kong's University Research Committee Seed Fund for Basic Research ; National Science Foundation of China[41120124002] ; National Science Foundation of China[91514302]
WOS研究方向	Evolutionary Biology
WOS类目	Evolutionary Biology
WOS记录号	WOS:000493313500008
出版者	OXFORD UNIV PRESS
引用统计	被引频次：69[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/16933
专题	中科院古脊椎所（2000年以后）
通讯作者	Goloboff, Pablo A.
作者单位	1.Consejo Nacl Invest Cient & Tecn, UEL, San Miguel De Tucuman, Argentina 2.Univ Hong Kong, Vertebrate Palaeontol Lab, Dept Earth Sci, Pokfulam, Hong Kong, Peoples R China 3.Consejo Nacl Invest Cient & Tecn, Museo Egidio Feruglio, Trelew, Argentina 4.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Goloboff, Pablo A.,Pittman, Michael,Pol, Diego,et al. Morphological Data Sets Fit a Common Mechanism Much More Poorly than DNA Sequences and Call Into Question the Mkv Model[J]. SYSTEMATIC BIOLOGY,2019,68(3):494-504.
APA	Goloboff, Pablo A.,Pittman, Michael,Pol, Diego,&Xu, Xing.(2019).Morphological Data Sets Fit a Common Mechanism Much More Poorly than DNA Sequences and Call Into Question the Mkv Model.SYSTEMATIC BIOLOGY,68(3),494-504.
MLA	Goloboff, Pablo A.,et al."Morphological Data Sets Fit a Common Mechanism Much More Poorly than DNA Sequences and Call Into Question the Mkv Model".SYSTEMATIC BIOLOGY 68.3(2019):494-504.

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