期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 280, 期 1770, 页码 -出版社
ROYAL SOC
DOI: 10.1098/rspb.2013.1910
关键词
ancient DNA; Mammuthus primigenius; extinction; refugia; climate
资金
- EU
- Swedish Research Council (VR)
- Marie Curie Actions FP6 grant [041545]
- NERC radiocarbon facility [NF/2008/1/17]
- Stiftelsen Lars Hiertas Minne
- IKY scholarships
- operational program 'Education and Lifelong Learning' of the European Social Fund (ESF)
- NSRF
- NERC [NE/D003105, NE/G005982]
- NERC [NE/G005982/1, NE/G00188X/1, NRCF010002, NE/J009490/1, NE/J009342/1] Funding Source: UKRI
- Natural Environment Research Council [NRCF010002, NE/G005982/1, NE/G00188X/1, NE/J009490/1, NE/J009342/1] Funding Source: researchfish
Ancient DNA analyses have provided enhanced resolution of population histories in many Pleistocene taxa. However, most studies are spatially restricted, making inference of species-level biogeographic histories difficult. Here, we analyse mitochondrial DNA (mtDNA) variation in the woolly mammoth from across its Holarctic range to reconstruct its history over the last 200 thousand years (kyr). We identify a previously undocumented major mtDNA lineage in Europe, which was replaced by another major mtDNA lineage 32-34 kyr before present (BP). Coalescent simulations provide support for demographic expansions at approximately 121 kyr BP, suggesting that the previous interglacial was an important driver for demography and intraspecific genetic divergence. Furthermore, our results suggest an expansion into Eurasia from America around 66 kyr BP, coinciding with the first exposure of the Bering Land Bridge during the Late Pleistocene. Bayesian inference indicates Late Pleistocene demographic stability until 20-15 kyr BP, when a severe population size decline occurred.
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