No suggestion of hybridization between the vulnerable black-faced impala (Aepyceros melampus petersi) and the common impala (A. m. melampus) in Etosha National Park, Namibia

Molecular Ecology
E D Lorenzen, Hans R Siegismund

Abstract

There are two recognized subspecies of impala in sub-Saharan Africa: the common impala (Aepyceros melampus melampus) -- widespread in southern and east Africa -- and the vulnerable black-faced impala (A. m. petersi) -- found naturally in only a small enclave in southwest Africa. The Etosha National Park (NP) in Namibia harbours the largest and only protected-area population of black-faced impala, numbering some 1500 individuals. Due to translocations of the exotic common impala to commercial farms in Namibia during the past decades, the black-faced impala in Etosha is faced with the potentially serious threat of hybridization posed by secondary contact with the common impala inhabiting bordering farms. Using eight microsatellite DNA markers, we analysed 127 black-faced impala individuals from the five subpopulations in Etosha NP, to determine the degree, if any, of hybridization within the park. We found that (a) the black-faced impala were highly genetically differentiated from the common impala (pairwise theta-values ranged from 0.18 to 0.39 between subspecies; overall value = 0.27) and (b) black-faced samples showed high levels of genetic variability [average expected heterozygosity (H(E)) = 0.61 +/- 0.01 SE], although not a...Continue Reading

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Citations

Jan 13, 2006·The Journal of Heredity·Eline D LorenzenHans R Siegismund
Jul 21, 2009·The Journal of Heredity·Barbara CrestanelloGiorgio Bertorelle
Jan 24, 2007·Genetics·John P Huelsenbeck, Peter Andolfatto
Jun 24, 2011·Evolutionary Bioinformatics Online·John P HuelsenbeckEdna T Huelsenbeck
Jul 27, 2007·Molecular Ecology·Eline D LorenzenHans R Siegismund
Jun 19, 2012·Molecular Ecology·E D LorenzenH R Siegismund

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