Publication
Title
Phytogeography of a widespread sub-Saharan murid rodent Aethomys chrysophilus : the role of geographic barriers and paleoclimate in the Zambezian bioregion
Author
Abstract
Murid rodents of the genus Aethomys are one of the most common rodents in drier habitats in subSaharan Africa. Among them, the red veld rat Aethomys chrysophilus is the most widespread species with the core distribution located in the Zambezian bioregion. In this study, we describe phylogeographic structure of the species and estimate its age from a time-calibrated phylogeny of the genus. Seven parapatric clades were identified in the mitochondrial cytochrome b phylogeny, where some of the distributions of these clades have been separated by previously described biogeographical divides (Zambezi-Kafue river system, Rukwa Rift and the Eastern Arc Mountains). One internal Glade corresponded to populations previously described as a distinct species, Aethomys ineptus. The whole A. chrysophilus complex was estimated to be 1.3 (0.5-2.4) Mya old, with A. ineptus originating 0.7 (0.1-1.4) Mya before present. The internal position of A. ineptus was also recovered in phylogenetic reconstruction based on two nuclear genes and thus it is not a consequence of mitochondrial introgression. In addition, we analyzed skull form variation across the species' distributional range and found no significant difference between A. ineptus and the rest of A. chrysophilus complex.
Language
English
Source (journal)
Mammalia : morphologie, biologie, systématique des mammifères. - Paris, 1936, currens
Publication
Paris : Laboratoire de zoologie des mammifères , 2018
ISSN
0025-1461 [print]
1864-1547 [online]
Volume/pages
82 :4 (2018) , p. 373-387
ISI
000437839800009
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 02.08.2018
Last edited 15.10.2021
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