【科技日报】古基因组研究揭示家犬同人类共迁徙历史

Core Insights - The research led by Wang Guodong and 35 international teams has successfully sequenced the genomes of 17 ancient dogs, contributing to a total of 73 ancient dog genomes, which illustrate the evolutionary lineage of domestic dogs from East Asia to the Eurasian steppe and their co-migration with humans [1][2] Group 1: Research Findings - The study reveals that a unique ancient lineage of domestic dogs existed in China 5,000 years ago, which was later supplemented by ancient dog lineages from Siberia and the West over the following millennia [1] - The ancient East Asian ancestors of Chinese domestic dogs also spread widely across various regions of the Eurasian steppe [1] - The research indicates that multiple infiltration events of domestic dogs correspond closely with human migrations over the past 10,000 years, highlighting the intimate relationship between dogs and humans [2] Group 2: Historical Context - In the Hexi Corridor region, the increase of Northeast Asian ancestry in dog genomes aligns with the influx of Northeast Asian ancestry in human populations [2] - The rise of Western ancestry in Eurasian steppe dogs corresponds with the historical migrations of ancient humans, linking dogs to both Eastern European hunter-gatherers in the Neolithic and Iranian agriculturalists in the Bronze Age [2] - The study emphasizes that the bloodline movement of domestic dogs over millennia reflects the interconnectedness of ancient civilizations from the Eurasian steppe to the Hexi Corridor [2] Group 3: Methodology and Implications - The ancient genome analysis methods used in this research can serve as a reference for uncovering the roles of other domesticated animals, such as horses, cattle, and sheep, in human history [2] - This research provides a solid theoretical foundation for the development and utilization of animal genetic resources, highlighting the potential of domesticated animals [2]