Relic populations of Fukomys mole-rats in Tanzania : description of two new species F. livingstoni sp nov and F. hanangensis sp nov.

Show simple item record Faulkes, Chris G. Mgode, Georgies F. Archer, Elizabeth K. Bennett, Nigel C., 1961- 2017-08-15T08:28:36Z 2017-08-15T08:28:36Z 2017-04-27
dc.description.abstract Previous studies of African mole-rats of the genera Heliophobius and Fukomys (Bathyergidae) in the regions of East and south central Africa have revealed a diversity of species and vicariant populations, with patterns of distribution having been influenced by the geological process of rifting and changing patterns of drainage of major river systems. This has resulted in most of the extant members of the genus Fukomys being distributed west of the main Rift Valley. However, a small number of isolated populations are known to occur east of the African Rift Valley in Tanzania, where Heliophobius is the most common bathyergid rodent. We conducted morphological, craniometric and phylogenetic analysis of mitochondrial cytochrome b (cyt b) sequences of two allopatric populations of Tanzanian mole-rats (genus Fukomys) at Ujiji and around Mount Hanang, in comparison with both geographically adjacent and more distant populations of Fukomys. Our results reveal two distinct evolutionary lineages, forming clades that constitute previously unnamed species. Here, we formally describe and designate these new species F. livingstoni and F. hanangensis respectively. Molecular clock-based estimates of divergence times, together with maximum likelihood inference of biogeographic range evolution, offers strong support for the hypothesis that vicariance in the Western Rift Valley and the drainage patterns of major river systems has subdivided populations of mole-rats. More recent climatic changes and tectonic activity in the ``Mbeya triple junction'' and Rungwe volcanic province between Lakes Rukwa and Nyasa have played a role in further isolation of these extra-limital populations of Fukomys in Tanzania. en_ZA
dc.description.department Zoology and Entomology en_ZA
dc.description.librarian am2017 en_ZA
dc.description.sponsorship Grants from the National Research Foundation and University of Pretoria South Africa (to NCB). en_ZA
dc.description.uri en_ZA
dc.identifier.citation Faulkes, C.G., Mgode, G.F., Archer, E.K. & Bennett, N.C. (2017), Relic populations of Fukomys mole-rats in Tanzania: description of two new species F. liv- ingstoni sp. nov. and F. hanangensis sp. nov. PeerJ 5:e3214; DOI 10.7717/peerj.3214. en_ZA
dc.identifier.issn 2167-8359 (online)
dc.identifier.other 10.7717/peerj.3214
dc.language.iso en en_ZA
dc.publisher PeerJ en_ZA
dc.rights © 2017 Faulkes et al. Article distributed under a Creative Commons CC-BY 4.0 license. en_ZA
dc.subject Fukomys en_ZA
dc.subject Mitochondrial DNA en_ZA
dc.subject African mole-rats (Bathyergidae) en_ZA
dc.subject Rift Valley en_ZA
dc.subject Phylogeography en_ZA
dc.subject Bathyergidae en_ZA
dc.subject New species en_ZA
dc.title Relic populations of Fukomys mole-rats in Tanzania : description of two new species F. livingstoni sp nov and F. hanangensis sp nov. en_ZA
dc.type Article en_ZA

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