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Title: Complex admixture preceded and followed the extinction of wisent in the wild
Authors: Węcek, Karolina
Hartmann, Stefanie
Paijmans, Johanna L. A.
Taron, Ulrike
Xenikoudakis, Georgios
Cahill, James A.
Dobosz, Roland
Manaserian, Ninna
Okarma, Henryk
Tokarska, Małgorzata
Turvey, Samuel T.
Wójcik, Jan M.
Żyła, Waldemar
Szymura, Jacek M.
Hofreiter, Michael
Barlow, Axel
Keywords: admixture; ancient DNA; European bison; Bison bonasus; domestic cattle; aurochs; hybridization
Issue Date: 2017
Citation: Molecular Biology and Evolution, Vol. 34, iss. 3 (2017), s. 598-612
Abstract: Retracing complex population processes that precede extreme bottlenecks may be impossible using data from living individuals. The wisent (Bison bonasus), Europe’s largest terrestrial mammal, exemplifies such a population history, having gone extinct in the wild but subsequently restored by captive breeding efforts. Using low coverage genomic data from modern and historical individuals, we investigate population processes occurring before and after this extinction. Analysis of aligned genomes supports the division of wisent into two previously recognized subspecies, but almost half of the genomic alignment contradicts this population history as a result of incomplete lineage sorting and admixture. Admixture between subspecies populations occurred prior to extinction and subsequently during the captive breeding program. Admixture with the Bos cattle lineage is also widespread but results from ancient events rather than recent hybridization with domestics. Our study demonstrates the huge potential of historical genomes for both studying evolutionary histories and for guiding conservation strategies.
DOI: 10.1093/molbev/msw254
ISSN: 0737-4038
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