Arid
DOI10.1016/j.ympev.2011.08.009
The genetic legacy of aridification: Climate cycling fostered lizard diversification in Australian montane refugia and left low-lying deserts genetically depauperate
Pepper, Mitzy1; Ho, Simon Y. W.2; Fujita, Matthew K.3; Keogh, J. Scott1
通讯作者Pepper, Mitzy
来源期刊MOLECULAR PHYLOGENETICS AND EVOLUTION
ISSN1055-7903
EISSN1095-9513
出版年2011
卷号61期号:3页码:750-759
英文摘要

It is a widely held assumption that populations historically restricted to mountain refugia tend to exhibit high levels of genetic diversity and deep coalescent histories, whereas populations distributed in surrounding low-lying regions tend to be genetically depauperate following recent expansion from refugia. These predicted genetic patterns are based largely on our understanding of glaciation history in Northern Hemisphere systems, yet remain poorly tested in analogous Southern Hemisphere arid systems because few examples in the literature allow the comparison of widespread taxa distributed across mountain and desert biomes. We demonstrate with multiple datasets from Australian geckos that topographically complex mountain regions harbor high nucleotide diversity, up to 18 times higher than that of the surrounding desert lowlands. We further demonstrate that taxa in topographically complex areas have older coalescent histories than those in the geologically younger deserts, and that both ancient and more recent aridification events have contributed to these patterns. Our results show that, despite differences in the details of climate and landscape changes that occurred in the Northern and Southern hemispheres (ice-sheets versus aridification), similar patterns emerge that illustrate the profound influence of the Pleistocene on contemporary genetic structure. (C) 2011 Elsevier Inc. All rights reserved.


英文关键词Biogeography Phylogeography Arid zone Bayesian phylogenetic analysis Reptile Desert
类型Article
语种英语
国家Australia ; USA
收录类别SCI-E
WOS记录号WOS:000297387600014
WOS关键词PHYLOGENETIC-RELATIONSHIPS ; COMPARATIVE PHYLOGEOGRAPHY ; POPULATION EXPANSION ; MOLECULAR PHYLOGENY ; HETERONOTIA-BINOEI ; AGAMID LIZARDS ; AREA CLADOGRAM ; SPECIES-GROUP ; EVOLUTION ; DIVERSITY
WOS类目Biochemistry & Molecular Biology ; Evolutionary Biology ; Genetics & Heredity
WOS研究方向Biochemistry & Molecular Biology ; Evolutionary Biology ; Genetics & Heredity
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/169709
作者单位1.Australian Natl Univ, Res Sch Biol, Div Evolut Ecol & Genet, Canberra, ACT, Australia;
2.Univ Sydney, Sch Biol Sci, Sydney, NSW 2006, Australia;
3.Harvard Univ, Cambridge, MA 02138 USA
推荐引用方式
GB/T 7714
Pepper, Mitzy,Ho, Simon Y. W.,Fujita, Matthew K.,et al. The genetic legacy of aridification: Climate cycling fostered lizard diversification in Australian montane refugia and left low-lying deserts genetically depauperate[J],2011,61(3):750-759.
APA Pepper, Mitzy,Ho, Simon Y. W.,Fujita, Matthew K.,&Keogh, J. Scott.(2011).The genetic legacy of aridification: Climate cycling fostered lizard diversification in Australian montane refugia and left low-lying deserts genetically depauperate.MOLECULAR PHYLOGENETICS AND EVOLUTION,61(3),750-759.
MLA Pepper, Mitzy,et al."The genetic legacy of aridification: Climate cycling fostered lizard diversification in Australian montane refugia and left low-lying deserts genetically depauperate".MOLECULAR PHYLOGENETICS AND EVOLUTION 61.3(2011):750-759.
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