Arid
DOI10.1111/j.1095-8312.2012.02016.x
Phylogenetic analysis and phylogeography of the tetraploid rodent Tympanoctomys barrerae (Octodontidae): insights on its origin and the impact of Quaternary climate changes on population dynamics
Gallardo, Milton H.1; Suarez-Villota, Elkin Y.1,2; Nunez, Jose J.1; Vargas, Rodrigo A.1; Haro, Ronie1; Koehler, Nelida2
通讯作者Gallardo, Milton H.
来源期刊BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN0024-4066
出版年2013
卷号108期号:2页码:453-469
英文摘要

The allotetraploid Tympanoctomys barrerae has a broad, patchy distribution around salt flats in western Argentina. To gain insights into its phylogenetic relationships, phylogeographical patterns, and origin, seven populations of T. barrerae and its allied taxa were studied through a 1075-bp fragment of cytochrome b and cytochrome oxidase I. Matrilineal phylogenetic relationships were explored with maximum likelihood and Bayesian approaches. The intraspecific genealogy was inferred by median-joining networks. The populational structure was assessed by molecular variance, and the demographic history through coalescence. The tree topology depicted sister-group relationship between Octomys mimax to the pair T. barreraePipanacoctomys aureus, suggesting P.?aureus belongs to the maternal lineage that gave rise to T. barrerae. High degrees of intrapopulational variation and the several instances of interpopulational polyphyly suggest range shifts and secondary contact. Consistent with the phylogenetic results, the network analysis revealed two haplotypic lineages depicting genetic admixtures unrelated to the current geographical distribution, and a deep split with the southernmost lineage of Chubut. The origin of T barrerae was estimated at approximately 2.52 Mya, whereas the divergence estimate for Chubut coincides with the end of largest Patagonian glaciation, at 1.47 Mya. Apparently, this population remained isolated during a northward Pleistocenic range shift. The historical demographic patterns of the lineages of T. barrerae fit with a contractionexpansion model coincident with Quaternary cycling events. (c) 2012 The Linnean Society of London, Biological Journal of the Linnean Society, 2012, 108, 453469.


英文关键词historical demography hybrid speciation Patagonia Pleistocene
类型Review
语种英语
国家Chile
收录类别SCI-E
WOS记录号WOS:000313784500017
WOS关键词SOUTHERN SOUTH-AMERICA ; AIRES PROVINCE ARGENTINA ; RED VIZCACHA RAT ; MITOCHONDRIAL-DNA ; CAVIOMORPH RODENTS ; DESERT RODENTS ; OCTODONTOIDEA RODENTIA ; GENETIC-STRUCTURE ; MOLECULAR CLOCKS ; COTTON GOSSYPIUM
WOS类目Evolutionary Biology
WOS研究方向Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/176164
作者单位1.Univ Austral Chile, Inst Marine & Limnol Sci, Valdivia, Chile;
2.Univ Austral Chile, Inst Environm & Evolutionary Sci, Valdivia, Chile
推荐引用方式
GB/T 7714
Gallardo, Milton H.,Suarez-Villota, Elkin Y.,Nunez, Jose J.,et al. Phylogenetic analysis and phylogeography of the tetraploid rodent Tympanoctomys barrerae (Octodontidae): insights on its origin and the impact of Quaternary climate changes on population dynamics[J],2013,108(2):453-469.
APA Gallardo, Milton H.,Suarez-Villota, Elkin Y.,Nunez, Jose J.,Vargas, Rodrigo A.,Haro, Ronie,&Koehler, Nelida.(2013).Phylogenetic analysis and phylogeography of the tetraploid rodent Tympanoctomys barrerae (Octodontidae): insights on its origin and the impact of Quaternary climate changes on population dynamics.BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY,108(2),453-469.
MLA Gallardo, Milton H.,et al."Phylogenetic analysis and phylogeography of the tetraploid rodent Tympanoctomys barrerae (Octodontidae): insights on its origin and the impact of Quaternary climate changes on population dynamics".BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 108.2(2013):453-469.
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