Systematics and diversification of Praomys species (Rodentia: Muridae) endemic to the Cameroon Volcanic Line (West Central Africa)

摘要: Missoup, A.D., Nicolas, V., Wendelen, W., Keming, E., Bilong Bilong, C.F., Couloux, A., Atanga, Hutterer, R. & Denys, C. (2012). Systematics and diversification of Praomys species (Rodentia: Muridae) endemic to the Cameroon Volcanic Line (West Central Africa). —Zoologica Scripta, 41, 327–345. Our integrative approach combines two mitochondrial genes (16S cyt b gene), nuclear (exon 10 GHR exon 1 IRBP) craniometrical data test status infer phylogenetic relationships three endemics (P. hartwigi, P. morio P. obscurus). The taxonomic rank principal genus group is assessed mode P. tullbergi complex in Afrotropical forests discussed based on estimates times most recent common ancestors tree topologies. This study documents for first time molecular morphometrical distinctiveness P. hartwigi within complex. Further studies including specimens from all its distribution range are needed conclude P. obscurus. monophyly refuted. Times major clades estimated last 2.5 Mya during or 2 Mya different forms. lowland forest refuge hypothesis might well explain P. misonnei, P. rostratus guineo-congolese block. isolation montane could have facilitated divergence between forms P. obscurus populations continent those island Bioko. (species) that inhabit probably originated as subsequently specialized highland conditions.