Based on the molecular phylogeny of the genus Illadopsis, a very great genetic difference between sedentary populations of Illadopsis rufipennis resurrects the name Illadopsis extrema Bates, 1930
AbstractIlladopsis rufipennis is a sedentary member of the African jungle babblers and in our paper concerning this group, we retrieved a strong divergence between its two subspecies. To check this divergence and leaning partially on our phylogram obtained in our paper already published, we investigated a genetic variation of the individuals of the two subspecies of Illadopsis rufipennis distributed in the West (Liberia) and the West (Central African Republic) of Africa. For this, we use two mitochondrial genes (ND2 and ND3) to calculate their genetic distances and to explore their mutational differentiation. We also used our phylogenetic as well as dating results already obtained and then some are already published. Thus with our ND2 and ND3, a genetic distance of 10.45% and 12.8% has been estimated respectively between individuals of Illadopsis rufipennis extrema (Liberia) and Illadopsis rufipennis rufipennis (Central African Republic) but it was, for the same markers, of 0.07% and 2.62% respectively between specimens of I. r. rufipennis caught in Central African Republic and Cameroon. For the mutational differentiation, a total of 153 different molecular characters have been observed on the two markers investigated between these two subspecies. Leaning on our dating results, the split between the subspecies Illadopsis rufipennis extrema (Liberia) and the subclade Illadopsis rufipennis rufipennis (Central African Republic and Cameroon) and Illadopsis pyrrhoptera was estimated at 2.98 Â± 0.88 Myrs. This time period coincide slightly with one of the three estimated peaks of the global cooling occurred in Africa which created and maintained forest refuges during this most arid period and plays a role in the speciation of several African taxa. Thus for these sedentary birds separated of around 3260 km with several geographic barriers, marked by the variation of the color of their top and sides of head as well as measures of their weight and for which no risk of recurrent gene flow is again possible, we suggest resurrecting name Illadopsis extrema Bates, 1930 for individuals referred as Illadopsis rufipennis extrema of this study.
 International Ornithologist Congress. 2012. The World Bird List. Version 3.1. http://www.worldbirdnames.org/n-warblers.html  Kumar, S., Tamura, K. and Nei, M. (2004). MEGA3: Integrated software for Molecular Evolutionary Genetics Analysis and sequence alignement. Brief. Bioinform. 5: 150-163.  Gene Codes Corporations (1998). Sequencher. Version 3.1. Ann. Arbor, MI.  Diamond, A. W. and Hamilton, A. C. (1980). The distribution of forest passerine birds and Quaternary climate change in Africa. J. Zool. 191: 379-402.  Crowe, T. M. and Crowe, A. A. (1982). Patterns of distribution, diversity and endemism in Afro-tropical birds. J. Zool. 198: 417-442.  Mayr, E. and Oâ€™Hara, R. J. (1986). The biogeographic evidence supporting the Pleistocene forest refuge hypothesis. Evolution 40: 55-67.  Hamilton, A., Taylor, D. and Howard, P. (2001). Hotspots in African Forest as Quaternary Refugia. In African rain forest ecology and conservation: An interdisciplinary perspective (Weber W, White L, Vedder A, Naughton-Treves L, eds). Yale University Press, New Haven, pp. 233-262.  Maley, J. (2001). The Impact of Arid Phases on the African Rain Forest Through Geological History. In African rain forest ecology and conservation: An interdisciplinary perspective (Weber W, White L, Vedder A, Naughton-Treves L, eds). Yale University Press, New Haven, pp. 68-87.  deMenocal, P. B. (1995). Plio-Pleistocene African climate. Science 270: 53-58.
 deMenocal, P. B. (2004). African climate change and faunal evolution during the Pliocene-Pleistocene. Ear. Planet. Sci. Lett. 220: 2-24.
 Hamilton, A. C. (1992). History of forests and climate. In The Conservation Atlas of Tropical Forests: Africa (Sayer JA, Harcourt CS, Collins NM, eds). IUCN and MacMillan Publishers, United Kingdom, pp. 17-25.  Jenkins, M. and Hamilton, A. C. (1992). Biological diversity. In The Conservation Atlas of Tropical Forests: Africa (Sayer JA, Harcourt CS, Collins NM, eds). IUCN and MacMillan Publishers, United Kingdom, pp. 26-32.  Partridge, T. C., Wood, B. A. and deMenocal, P. B. (1995). The influence of global climatic change and regional uplift in large-mammalian evolution in East and Southern Africa. In Paleoclimate and Evolution with Emphasis on Human Origins (Vrba ES, Denton GH, Partridge TC, Burckle LH, eds). Yale University Press, New Haven, pp. 331-335.  Moreau, R. E. (1966). The bird faunas of Africa and its islands. Volume 8. New York and London: Academic Press.  LÃ©vÃªque, C. (1997). Biodiversity dynamics and conservation: the freshwater fish of tropical Africa. Cambridge University Press, 432p.  Borrow, N. and Demey, R. (2004). Field Guide to the Birds of Western Africa. Christopher Helm. London.  Nguembock, B. (2008). Etude phylogÃ©nÃ©tique et biogÃ©ographique de lâ€™avifaune forestiÃ¨re des montagnes de lâ€™Ouest Cameroun. Ph.D Thesis, University of Paris VI, France.  Takeda, H. (2008). Draft genome of the medaka fish: a comprehensive resource for medaka developmental genetics and vertebrate evolutionary biology. Dev. Growth Differ. 50 Suppl 1: S157-S166.  Borrow, N. and Demey, R. (2001). A Guide to the Birds of Western Africa. Princeton University Press, Princeton and Oxford.
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