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Dog domestication and the dual dispersal of people and dogs into the Americas [Genetics]
Proceedings of the National Academy of Sciences of the United States of America ( IF 11.1 ) Pub Date : 2021-02-09 , DOI: 10.1073/pnas.2010083118
Angela R Perri 1 , Tatiana R Feuerborn 2, 3, 4, 5, 6 , Laurent A F Frantz 7, 8 , Greger Larson 9 , Ripan S Malhi 10, 11 , David J Meltzer 12, 13 , Kelsey E Witt 14, 15
Affiliation  

Advances in the isolation and sequencing of ancient DNA have begun to reveal the population histories of both people and dogs. Over the last 10,000 y, the genetic signatures of ancient dog remains have been linked with known human dispersals in regions such as the Arctic and the remote Pacific. It is suspected, however, that this relationship has a much deeper antiquity, and that the tandem movement of people and dogs may have begun soon after the domestication of the dog from a gray wolf ancestor in the late Pleistocene. Here, by comparing population genetic results of humans and dogs from Siberia, Beringia, and North America, we show that there is a close correlation in the movement and divergences of their respective lineages. This evidence places constraints on when and where dog domestication took place. Most significantly, it suggests that dogs were domesticated in Siberia by ∼23,000 y ago, possibly while both people and wolves were isolated during the harsh climate of the Last Glacial Maximum. Dogs then accompanied the first people into the Americas and traveled with them as humans rapidly dispersed into the continent beginning ∼15,000 y ago.



中文翻译:

狗的驯化以及人和狗向美洲的双重扩散[遗传学]

古代 DNA 分离和测序的进展已经开始揭示人和狗的种群历史。在过去的 10,000 年中,古代狗遗骸的遗传特征与已知的人类在北极和偏远太平洋等地区的传播有关。然而,人们怀疑这种关系有更深的渊源,人与狗的串联运动可能是在更新世晚期灰狼祖先驯化狗后不久开始的。在这里,通过比较来自西伯利亚、白令陆和北美的人类和狗的种群遗传结果,我们表明它们各自谱系的运动和分歧密切相关。这一证据限制了狗驯化的时间和地点。最重要的是,这表明狗在大约 23,000 年前在西伯利亚被驯化,可能是在末次盛冰期的恶劣气候期间人和狼都被隔离了。大约 15,000 年前,随着人类迅速分散到大陆,狗随后陪伴第一批人进入美洲并与他们一起旅行。

更新日期:2021-01-26
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