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Phylogeography and evolutionary history of the Crocidura olivieri complex (Mammalia, Soricomorpha): from a forest origin to broad ecological expansion across Africa

SYSNO ASEP	0443625
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Phylogeography and evolutionary history of the Crocidura olivieri complex (Mammalia, Soricomorpha): from a forest origin to broad ecological expansion across Africa
Author(s)	Jacquet, F. (FR) Denys, C. (FR) Verheyen, E. (BE) Bryja, Josef (UBO-W)_{RID, SAI, ORCID} Hutterer, R. (DE) Kerbis Peterhans, J. C. (US) Stanley, W. T. (US) Goodman, S. M. (US) Couloux, A. (FR) Colyn, M. (FR) Nicolas, V. (FR)
Number of authors	11
Source Title	BMC Evolutionary Biology. - : BioMed Central - ISSN 1471-2148 Roč. 15, č. 71 (2015), s. 71
Number of pages	15 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	Crocidura olivieri ; Diversification ; Forest refuge ; Molecular dating ; Phylogeography ; Pleistocene climate changes ; Riverine barrier ; Soricidae ; Systematics
Subject RIV	EG - Zoology
R&D Projects	GAP506/10/0983 GA ČR - Czech Science Foundation (CSF)
Institutional support	UBO-W - RVO:68081766
UT WOS	000353938300001
EID SCOPUS	84964698567
DOI	10.1186/s12862-015-0344-y
Annotation	This study aims to reconstruct the evolutionary history of African shrews referred to the Crocidura olivieri complex. We tested the respective role of forest retraction/expansion during the Pleistocene, rivers (allopatric models), ecological gradients (parapatric model) and anthropogenic factors in explaining the distribution and diversification within this species complex. We sequenced three mitochondrial and four nuclear markers from 565 specimens encompassing the known distribution of the complex, i.e. from Morocco to Egypt and south to Mozambique. We used Bayesian phylogenetic inference, genetic structure analyses and divergence time estimates to assess the phylogenetic relationships and evolutionary history of these animals. The C. olivieri complex can be segregated into eight principal geographical clades, most exhibiting parapatric distributions. A decrease in genetic diversity was observed between central and western African clades and a marked signal of population expansion was detected for a broadly distributed clade occurring across central and eastern Africa and portions of Egypt (clade IV). The main cladogenesis events occurred within the complex between 1.37 and 0.48 Ma. Crocidura olivieri sensu stricto appears polyphyletic and C. viaria and C. fulvastra were not found to be monophyletic. Conclusions Climatic oscillations over the Pleistocene probably played a major role in shaping the genetic diversity within this species complex. The earliest postulated members of the complex originated in central/eastern Africa and the first radiations took place in rain forests of the Congo Basin. A dramatic shift in the ecological requirements in early members of the complex, in association with changing environments, took place sometime after 1.13 Ma. Some lineages then colonized a substantial portion of the African continent, including a variety of savannah and forest habitats. This study underlines the need to revise the taxonomy of the C. olivieri complex.
Workplace	Institute of Vertebrate Biology
Contact	Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524
Year of Publishing	2016

Number of the records: 1