Arid
DOI10.1111/j.1365-2699.2010.02399.x
The roles of rivers and Pleistocene refugia in shaping genetic diversity in Praomys misonnei in tropical Africa
Nicolas, V.1; Missoup, A. D.1; Denys, C.1; Peterhans, J. Kerbis2,3; Katuala, P.4; Couloux, A.5; Colyn, M.6
通讯作者Nicolas, V.
来源期刊JOURNAL OF BIOGEOGRAPHY
ISSN0305-0270
EISSN1365-2699
出版年2011
卷号38期号:1页码:191-207
英文摘要

Aim


This study aims to elucidate the phylogeography of the murid rodent Praomys misonnei and to document whether or not rain forest refugia and rivers structure patterns of diversity within this species.


Location


Tropical Africa, from Ghana to Kenya.


Methods


Patterns of genetic structure and signatures of population history (cytochrome b gene) were assessed in a survey of 229 individuals from 54 localities. Using maximum likelihood, Bayesian, network and genetic structure analyses, we inferred intra-specific relationships and tested hypotheses for historical patterns of gene flow within P. misonnei.


Results


Our phylogenetic analyses reveal a strong phylogeographical structure. We identified four major geographical clades within P. misonnei: one clade in Ghana and Benin, a Nigerian clade, a West Central African clade and a Central and East African clade. Several subclades were identified within these four major clades. A signal of population expansion was detected in most clades or subclades. Coalescence within all of the major clades of P. misonnei occurred during the Middle Pleistocene and/or the beginning of Late Pleistocene.


Main conclusions


Our results suggest a role for both Pleistocene refugia and rivers in structuring genetic diversity in P. misonnei. This forest-dwelling rodent may have been isolated in a number of forest fragments during arid periods and expanded its range during wetter periods. Potential forest refugia may have been localized in Benin-Ghana, south-western Cameroon, southern Gabon, northern Gabon and eastern Democratic Republic of Congo-western Uganda. The Niger and/or the Cross Rivers, the Oubangui-Congo, Sanaga, Ogooue and/or Ivindo Rivers probably stopped the re-expansion of the species from relict areas.


英文关键词Africa cytochrome b diversification forest mitochondrial DNA Muridae phylogeography Praomys Pleistocene forest refugia riverine barrier hypothesis
类型Article
语种英语
国家France ; USA ; DEM REP CONGO
收录类别SCI-E
WOS记录号WOS:000285300500017
WOS关键词MITOCHONDRIAL-DNA SEQUENCES ; RAIN-FOREST REFUGIA ; COMPARATIVE PHYLOGEOGRAPHY ; WEST-AFRICA ; HISTORICAL BIOGEOGRAPHY ; ECOLOGICAL GRADIENTS ; MAXIMUM-LIKELIHOOD ; ALTERNATIVE MODELS ; RODENTIA MURIDAE ; LATE QUATERNARY
WOS类目Ecology ; Geography, Physical
WOS研究方向Environmental Sciences & Ecology ; Physical Geography
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/168980
作者单位1.Museum Natl Hist Nat, Dept Systemat & Evolut, UMR 7505, Lab Mammiferes & Oiseaux, 57 Rue Cuvier CP 51, F-75005 Paris, France;
2.Roosevelt Univ, Chicago, IL 60605 USA;
3.Field Museum Nat Hist, Chicago, IL 60605 USA;
4.Univ Kisangani, Anim Ecol & Resource Management Lab LEGERA, Kisangani, DEM REP CONGO;
5.Ctr Natl Sequencage, F-91057 Evry, France;
6.Univ Rennes 1, CNRS, UMR Ecobio 6553, Biol Stn, F-35380 Paimpont, France
推荐引用方式
GB/T 7714
Nicolas, V.,Missoup, A. D.,Denys, C.,et al. The roles of rivers and Pleistocene refugia in shaping genetic diversity in Praomys misonnei in tropical Africa[J],2011,38(1):191-207.
APA Nicolas, V..,Missoup, A. D..,Denys, C..,Peterhans, J. Kerbis.,Katuala, P..,...&Colyn, M..(2011).The roles of rivers and Pleistocene refugia in shaping genetic diversity in Praomys misonnei in tropical Africa.JOURNAL OF BIOGEOGRAPHY,38(1),191-207.
MLA Nicolas, V.,et al."The roles of rivers and Pleistocene refugia in shaping genetic diversity in Praomys misonnei in tropical Africa".JOURNAL OF BIOGEOGRAPHY 38.1(2011):191-207.
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