Life on the rocks: Multilocus phylogeography of rock hyrax (Procavia capensis) from southern Africa

摘要: Understanding the role of geography and climatic cycles in determining patterns biodiversity is important comparative evolutionary biology conservation. We studied phylogeographic pattern historical demography a rock-dwelling small mammal species from southern Africa, rock hyrax Procavia capensis capensis. Using multilocus coalescent approach, we assessed influence strong habitat dependence fluctuating regional climates on genetic diversity. sequenced mitochondrial gene (cytochrome b) two nuclear introns (AP5, PRKC1) supplemented with microsatellite genotyping, order to assess processes over multiple temporal scales. In addition, distribution modelling was used investigate current predicted under different scenarios. Collectively, data reveal complex history isolation followed by secondary contact shaping intraspecific The cyt b sequences confirmed presence previously proposed geographically genetically distinct lineages distributed across African Great Escarpment north-western mountain ranges. Molecular dating suggests Miocene divergence lineages, yet there are no discernible extrinsic barriers flow. markers incomplete lineage sorting or ongoing mixing lineages. Although lend some support subpopulations, weak structuring within between These indicate flow northern into parts sub-region likely following contact. predictably species' preference for rocky areas, stable refugia through time ranges, Escarpment, as well restricted areas Northern Cape Province Fold Mountains South Africa. Different microclimatic variables appear determine distributional range species. Despite preference, micro-habitat offered crevices unique life traits promoted adaptability P. capensis, resulting widespread persistence long period. Spatio-temporal comparison histories other co-distributed landscapes Africa will improve our understanding local endemism.