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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
A cytotaxonomic and DNA-based survey of rodents from Northern Cameroon and Western Chad
Mammalian Biology, Volume 76, No. 4, Year 2011
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Description
Rodent diagnosis has long remained obscured by the co-existence of cryptic species in many lineages. However, alternative and accessible methods, such as cytotaxonomy and DNA-based methods, are now available that allow biologists to accurately monitor biodiversity through the production of well documented lists of unambiguously species-specific identifications. As a continuation of our previous surveys of West African rodents, we here present the first rodent inventory of rodents from Northern Cameroon (as well as one locality in Western Chad) that fully relies on karyotypic and/or sequencing data. Doing so, we assess the presence of 18 species in this poorly documented region. Among them, we found several African spiny mice that could be referred as to A. johannis, a poorly documented species. Moreover, several Arvicanthis individuals could be aggregated with previously studied but still enigmatic specimens of ANI-2 and ANI-4 sensu Volobouev et al. (2002a,b), thus suggesting that they may all belong to one single species, namely A. rufinus. In addition, one specimen was shown to belong to a new biological species (Praomys sp.) that will deserve further taxonomic investigations. Finally, several Taterillus specimens were found with 2 n = 28-30 chromosomes and a XX/XY1Y2 sex chromosome system. On the basis of these new results as well as a reinterpretation of previously published data, we propose to refer these individuals as to the poorly documented Taterillus lacustris. Altogether, our data suggest that Northern Cameroon is a "phylogeographical node" for several rodent lineages which may be at least partly explained by the past changes within the Lake Chad basin. Keeping this in mind, there is little doubt that biodiversity will undergo important modifications in the coming decades, following the increasing aridity and the drastic reduction of Lake Chad. © 2010 Deutsche Gesellschaft für Säugetierkunde.
Authors & Co-Authors
Dobigny, Gauthier
France, Montferrier-sur-lez
Centre de Biologie Pour la Gestion Des Populations Cbgp
Niger
Ird
Tatard, Caroline
France, Montpellier
L'institut Agro Montpellier
Kane, Mamadou
France, Paris
Cirad
Gauthier, Philippe
France, Montferrier-sur-lez
Centre de Biologie Pour la Gestion Des Populations Cbgp
Brouat, Carine
France, Montferrier-sur-lez
Centre de Biologie Pour la Gestion Des Populations Cbgp
Bâ, Khalilou
France, Paris
Cirad
Duplantier, Jean Marc
France, Montferrier-sur-lez
Centre de Biologie Pour la Gestion Des Populations Cbgp
Statistics
Citations: 22
Authors: 7
Affiliations: 4
Identifiers
Doi:
10.1016/j.mambio.2010.10.002
ISSN:
16165047
e-ISSN:
16181476
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study
Study Approach
Quantitative
Study Locations
Cameroon
Chad