Sokoine University of Agriculture

Mitochondrial phylogeny reveals diVerential modes of chromosomal evolution in the genus Tatera (Rodentia: Gerbillinae) in Africa

Show simple item record Colangelo, P. Corti, M. Verheyen, E. Annesi, F. Oguge, N. Makundi, Rhodes H. Verheyen, W. 2017-12-18T05:58:59Z 2017-12-18T05:58:59Z 2005
dc.description Molecular Phylogenetics and Evolution vol. 35, pp 556–568 en_US
dc.description.abstract The African gerbils of the genus Tatera are widespread and abundant throughout sub-Saharan Africa. There is still today a certain controversy concerning the taxonomy of these rodents and very few attempts have been made to assess their systematic relationships. The present paper introduces Wndings based on the partial sequences of cytochrome b (495 bp) and the 16S rRNA (469 bp) mitochondrial genes of six (T. robusta, T. nigricauda, T. vicina, T. leucogaster, T. valida, and T. kempi) species together with two additional taxa. We also report the karyotypes of T. vicina and T. leucogaster. We propose that T. vicina should be considered as a valid species and show the monophyly of the robusta species group, with the exclusion of T. leucogaster. Our results show there is a diVerent chromosomal evolutionary pattern within the two major lineages, which is recognizable through molecular phylogenetics. One is characterized by karyotype stability and the other by a considerable number of chromosomal rearrangements. The lineage divergence coincides with the formation of the East African Rift. The processes that led to the origin of the East African species seem to be related to the subsequent climatic changes, which caused cyclic contraction and expansion of the savannah biomes. Furthermore, geological activities that characterized East Africa during Plio-Pleistocene may also have contributed to lineage divergence. en_US
dc.language.iso en en_US
dc.publisher Elsevier Inc. en_US
dc.subject African Rodents en_US
dc.subject Tatera en_US
dc.subject Chromosomal speciation en_US
dc.subject Karyotype evolution en_US
dc.subject Phylogenchy en_US
dc.subject Cytorome b en_US
dc.subject 16S en_US
dc.subject mtDNA en_US
dc.title Mitochondrial phylogeny reveals diVerential modes of chromosomal evolution in the genus Tatera (Rodentia: Gerbillinae) in Africa en_US
dc.type Article en_US
dc.url en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search SUA IR


My Account