Dec 23, 2016

Complex Admixture Preceded and Followed the Extinction of Wisent in the Wild

Molecular Biology and Evolution
Karolina WecekAxel Barlow


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.

  • References41
  • Citations2


  • References41
  • Citations2

Mentioned in this Paper

DNA, Mitochondrial
Nucleic Acid Hybridization Procedure
Extinction, Species
Hybridization, Intraspecies
Ancient DNA
Bison bonasus
Sorting - Cell Movement

Related Feeds

Ancient DNA

Ancient DNA sequences are able to offer valuable insights into molecular evolutionary processes, but are notoriously difficult to analyze due to molecular damage and exogenous dna contamination. Discover the latest research on Ancient DNA here.