Title
The impact of the Congo River and its tributaries on the rodent genus **Praomys** : speciation origin or range expansion limit? The impact of the Congo River and its tributaries on the rodent genus **Praomys** : speciation origin or range expansion limit?
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
London ,
Subject
Biology
Source (journal)
Zoological journal of the Linnean Society. - London
Volume/pages
163(2011) :3 , p. 983-1002
ISSN
0024-4082
ISI
000296261300010
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We studied the taxonomy, distribution, and ecology of species within Praomys, a common rodent genus present in rainforests and montane forests in sub-Saharan Africa. The taxonomy of the group is problematic, and for the sampled region of Kisangani (Democratic Republic of Congo) no prior genetic study has been published. We used a combination of molecular (cyt b sequencing) and craniometric techniques (canonical analyses of skull measurements) for the species identification of a total of 654 specimens. We confirm the presence of Praomys minor in the region, up to now only known from the type and paratype specimens. At least seven species are present in the Kisangani region, and two clades occur along both banks of the Congo River. The present-day distribution of the genus seems to be influenced by large-scale rainforest fragmentation related to drier periods in geological history. The Congo River could in this case constitute a modern barrier to gene flow when the climate enabled rainforest expansion. The tributaries of the Congo River play no role in limiting Praomys species distribution, apart from the Aruwimi River for Praomys jacksoni s.l.
E-info
https://repository.uantwerpen.be/docman/iruaauth/f36b6d/ba75de9c896.pdf
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