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The importance of cytotaxonomy in understanding the biogeography of African rodents: Lake Chad murids as an example by LAURENT GRANJON; GAUTHIER DOBIGNY is a Environmental Science article available to read on EtoBox.

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## ABSTRACT **1.** Due to the existence of numerous morphologically sibling species among African rodent genera, cytogenetical analyses are essential for correct taxonomic identifications. As an illustration, karyotypes of rodents captured in the Lake Chad area were systematically conducted, to determine them unambiguously. **2.** Thirteen species were found, giving a list of at least 18 species in total for the whole Lake Chad region when previously published data were critically re‐examined. Gerbilline rodents dominate in this Sahelian region, with five species of __Gerbillus__, four of __Taterillus__, two of __Tatera__ and __Desmodilliscus braueri__, and six species of murine rodents were also counted. Moreover, two species of __Taterillus__ appeared characterized by unique and hitherto unknown karyotypes, and undoubtedly represent new species. **3.** The Lake Chad area, although poorly studied from a biogeographical point of view, occupies a central position in the northern half of Africa which makes its zoogeographical affinities interesting to evaluate. Analysis of the biogeographical characteristics of the rodent species recorded here leads to the conclusion that the murid r

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Author

LAURENT GRANJON; GAUTHIER DOBIGNY

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0305-1838)

Published

2003

Language

EN

Field

Environmental Science (Physical Sciences)