Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.ympev.2012.06.025 |
Diversification in North American arid lands: Niche conservatism, divergence and expansion of habitat explain speciation in the genus Ephedra | |
Loera, Israel1; Sosa, Victoria1; Ickert-Bond, Stefanie M.2 | |
通讯作者 | Sosa, Victoria |
来源期刊 | MOLECULAR PHYLOGENETICS AND EVOLUTION
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ISSN | 1055-7903 |
EISSN | 1095-9513 |
出版年 | 2012 |
卷号 | 65期号:2页码:437-450 |
英文摘要 | A lineage of 12 arid land shrubby species in the gymnosperm genus Ephedra (Gnetales) from North America is used to evaluate the influence of climate on speciation. With a long evolutionary history, and a well documented fossil record this lineage is an ideal model for understanding the process of speciation under a niche conservatism scenario. Using seven DNA molecular markers, Bayesian inference is carried out to uncover sister species and to estimate time of divergence of the lineages. Ecological niche models are generated for four parapatric and sympatric sister species and two analyses of niche evolution are performed, one based on ecological niche models and another using raw data and multivariate analysis. As previous analyses suggest, the diversification of North America Ephedra species may be the result of a recent secondary radiation. Both parapatric and sympatric species diverged mostly in a scenario of climatic niche conservatism. However, we also found strong evidence for niche divergence for one of the sister species pairs (E. californica-E. trifurca). Moreover, the multivariate analysis found environmental differences for some variables between sister species. The estimated divergence time of three pairs of sister species distributed in southwestern North America (E. cutleri-E. aspera, E. californica-E. trifurca and E. torreyana-E. viridis) is inferred to have occurred in the Late Miocene to Pliocene and for the sister species pair E. antisyphilitica-E. coryi distributed in the southern United States and northeastern Mexico, it was inferred from the Pliocene to Pleistocene. The orogenetic and climatic changes documented for these regions related to expansion of arid lands, may have contributed to the diversification in North American Ephedra, rather than adaptations to new climatic conditions. (C) 2012 Elsevier Inc. All rights reserved. |
英文关键词 | Ephedra Gnetales Niche conservatism North American arid lands Secondary radiation Speciation |
类型 | Article |
语种 | 英语 |
国家 | Mexico ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000309636200008 |
WOS关键词 | PREDICTING SPECIES DISTRIBUTIONS ; CHLOROPLAST DNA ; PHYLOGENETIC-RELATIONSHIPS ; ECOLOGICAL SPECIATION ; EVOLUTIONARY HISTORY ; NEOGENE VICARIANCE ; MOLECULAR EVIDENCE ; NONCODING REGIONS ; UNIVERSAL PRIMERS ; GNETALES |
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/2XILL650/174101 |
作者单位 | 1.Inst Ecol AC, Xalapa 91000, Veracruz, Mexico; 2.Univ Alaska Fairbanks, Univ Alaska Museum, Dept Biol & Wildlife, Fairbanks, AK 99775 USA |
推荐引用方式 GB/T 7714 | Loera, Israel,Sosa, Victoria,Ickert-Bond, Stefanie M.. Diversification in North American arid lands: Niche conservatism, divergence and expansion of habitat explain speciation in the genus Ephedra[J],2012,65(2):437-450. |
APA | Loera, Israel,Sosa, Victoria,&Ickert-Bond, Stefanie M..(2012).Diversification in North American arid lands: Niche conservatism, divergence and expansion of habitat explain speciation in the genus Ephedra.MOLECULAR PHYLOGENETICS AND EVOLUTION,65(2),437-450. |
MLA | Loera, Israel,et al."Diversification in North American arid lands: Niche conservatism, divergence and expansion of habitat explain speciation in the genus Ephedra".MOLECULAR PHYLOGENETICS AND EVOLUTION 65.2(2012):437-450. |
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