Previous studies examining the origin of Australian dingoes and Pacific dogs suggest that they dispersed from a common ancestor from South China. In this study, Zhang et al. (2020) analyzed 7000 to 2000 year old mtDNA from dog remains from around the Yangtze and Yellow River basins. They found that their ancient samples belonged to the A1b haplogroup, which occurs at high frequencies in modern-day Australian dingo populations but is rare in Chinese dogs. Because the haplotype is rare in modern Chinese dog populations, the authors suggest a replacement of this haplogroup by the A1a haplogroup, which was not found in the ancient samples. The wide geographic range of a subhaplogroup, A1b2, also has implications for determining human dispersal. Analysis on this haplogroup suggests that humans (and dogs) from mainland China radiated to southeast Asia and Indonesia before reaching eastern Melanesian and Polynesian islands.
Audrey Tjahjadi
Link to original article: https://academic.oup.com/mbe/advance-article-abstract/doi/10.1093/molbev/msz311/5698279?redirectedFrom=fulltext
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