Genomic and archaeological evidence suggests a dual origin of domestic dogs
Genomic and archaeological evidence suggests a dual origin of domestic dogs
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DOI：
10.1126/science.aaf3161
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发表时间：
2016-06-03
期刊：
影响因子：
56.9
通讯作者：
Larson, Greger
中科院分区：
文献类型：
--
作者：
Frantz, Laurent A. F.;Mullin, Victoria E.;Larson, Greger
狗的地理和时间起源仍然存在争议。我们从59只古代狗和一只来自爱尔兰的新石器时代晚期狗(距今类似于4800年前)的完整(28x)基因组中生成了基因序列。我们的分析揭示了现代东亚狗和西亚欧亚狗之间存在着深深的裂痕。令人惊讶的是，这种分化的日期(类似于14,000到6,400年前)发生在狗在欧洲和东亚首次出现的几千年后。对古代和现代线粒体DNA的额外分析显示，欧洲人的单倍型频率急剧中断。总而言之，这些结果表明，狗可能是在欧亚大陆东部和西部从不同的狼种群中独立驯养的。然后，东欧的狗可能与人一起被运送到欧洲，在那里它们部分取代了欧洲旧石器时代的狗。
The geographic and temporal origins of dogs remain controversial. We generated genetic sequences from 59 ancient dogs and a complete (28x) genome of a late Neolithic dog (dated to similar to 4800 calendar years before the present) from Ireland. Our analyses revealed a deep split separating modern East Asian and Western Eurasian dogs. Surprisingly, the date of this divergence (similar to 14,000 to 6400 years ago) occurs commensurate with, or several millennia after, the first appearance of dogs in Europe and East Asia. Additional analyses of ancient and modern mitochondrial DNA revealed a sharp discontinuity in haplotype frequencies in Europe. Combined, these results suggest that dogs may have been domesticated independently in Eastern and Western Eurasia from distinct wolf populations. East Eurasian dogs were then possibly transported to Europe with people, where they partially replaced European Paleolithic dogs.