SCIENCES, TECHNOLOGIES ET DEVELOPPEMENT Revue scientifique de l’Université de Douala BP 24157 Douala – Cameroun Tél. : (237) 33-40-75-69 Fax : (237) 33-40-42-91 E-mail :
[email protected] ISSN 1029 - 2225 Phylogeny of Arvicanthine rodents (Muridae: Murinae): a reassessment of the status and relationships of the endemic Mount Oku Rat, Lamottemys okuensis Petter, 1986 with biogeographical implications Alain Didier Missoup 1&2 , Violaine Nicolas 2, Charles Félix Bilong Bilong 3, Arnaud Couloux 4, Christiane Denys 2. 1Department of Animal Biology Organisms, Faculty of Science, the University of Douala, PO Box: 24157 Douala, Cameroon . 2UMR 7205 : Origine, Structure et Evolution de la Biodiversité, Département Systématique et Evolution, Muséum National d’Histoire Naturelle, CP 51 - 55 rue Buffon, 75005 Paris, France . 3Department of Animal Biology and Physiology, Faculty of Science, the University of Yaoundé I, PO Box: 812 Yaoundé, Cameroon . 4 Genoscope, Centre National de Séquençage, 2, rue Gaston Crémieux, CP5706, 91057 Evry Cedex, France. Corresponding author:
[email protected] . Abstract The present study combines molecular (cyt b, IRBP, GHR) and morpho-eco-ethological phylogenies to test the status and to infer phylogenetic relationships of the enigmatic Mount Oku Rat, Lamottemys okuensis Petter, 1986. Known by a few number of specimens and restricted to an area that is continuously declining in the extent and quality of habitat, Lamottemys is listed as endangered in the “IUCN” Red List. Based solely on ecological and morphological data, two hypotheses of relationship were previously formulated, both suggesting an affinity to Arvicanthine rodents. Our taxonomic sampling includes 17 of the 18 potential members of the Arvicanthini tribe.