Correlating Bayesian date estimates with climatic events and domestication using a bovine case study.
2008 (English)In: Biology Letters, ISSN 1744-9561, Vol. 4, no 4, 370-374 p.Article in journal (Refereed) Published
The tribe Bovini contains a number of commercially and culturally important species, such as cattle. Understanding their evolutionary time scale is important for distinguishing between post-glacial and domestication-associated population expansions, but estimates of bovine divergence times have been hindered by a lack of reliable calibration points. We present a Bayesian phylogenetic analysis of 481 mitochondrial D-loop sequences, including 228 radiocarbon-dated ancient DNA sequences, using a multi-demographic coalescent model. By employing the radiocarbon dates as internal calibrations, we co-estimate the bovine phylogeny and divergence times in a relaxed-clock framework. The analysis yields evidence for significant population expansions in both taurine and zebu cattle, European aurochs and yak clades. The divergence age estimates support domestication-associated expansion times (less than 12 kyr) for the major haplogroups of cattle. We compare the molecular and palaeontological estimates for the Bison-Bos divergence.
Place, publisher, year, edition, pages
2008. Vol. 4, no 4, 370-374 p.
Divergence times, demographic model, population expansion, ancient DNA, time dependency
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:uu:diva-110012DOI: 10.1098/rsbl.2008.0073ISI: 000257398700015PubMedID: 18426745OAI: oai:DiVA.org:uu-110012DiVA: diva2:275015