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Pre-Columbian origins of Native American dog breeds, with only limited replacement by European dogs, confirmed by mtDNA analysis
KTH, School of Biotechnology (BIO), Gene Technology. KTH, Centres, Science for Life Laboratory, SciLifeLab.
KTH, School of Biotechnology (BIO), Gene Technology. KTH, Centres, Science for Life Laboratory, SciLifeLab.
KTH, School of Biotechnology (BIO), Gene Technology. KTH, Centres, Science for Life Laboratory, SciLifeLab.
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2013 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 280, no 1766, 20131142- p.Article in journal (Refereed) Published
Abstract [en]

Dogs were present in pre-Columbian America, presumably brought by early human migrants from Asia. Studies of free-ranging village/street dogs have indicated almost total replacement of these original dogs by European dogs, but the extent to which Arctic, North and South American breeds are descendants of the original population remains to be assessed. Using a comprehensive phylogeographic analysis, we traced the origin of the mitochondrial DNA lineages for Inuit, Eskimo and Greenland dogs, Alaskan Malamute, Chihuahua, xoloitzcuintli and perro sin pelo del Peru, by comparing to extensive samples of East Asian (n = 984) and European dogs (n = 639), and previously published pre-Columbian sequences. Evidence for a pre-Columbian origin was found for all these breeds, except Alaskan Malamute for which results were ambigous. No European influence was indicated for the Arctic breeds Inuit, Eskimo and Greenland dog, and North/South American breeds had at most 30% European female lineages, suggesting marginal replacement by European dogs. Genetic continuity through time was shown by the sharing of a unique haplotype between the Mexican breed Chihuahua and ancient Mexican samples. We also analysed free-ranging dogs, confirming limited pre-Columbian ancestry overall, but also identifying pockets of remaining populations with high proportion of indigenous ancestry, and we provide the first DNA-based evidence that the Carolina dog, a free-ranging population in the USA, may have an ancient Asian origin.

Place, publisher, year, edition, pages
The Royal Society Publishing , 2013. Vol. 280, no 1766, 20131142- p.
Keyword [en]
dog, mitochondrial DNA, mtDNA, haplotype, America, pre-Columbian
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:kth:diva-125534DOI: 10.1098/rspb.2013.1142ISI: 000321621000007Scopus ID: 2-s2.0-84880056979OAI: oai:DiVA.org:kth-125534DiVA: diva2:640118
Funder
Swedish Research CouncilKnut and Alice Wallenberg FoundationScience for Life Laboratory - a national resource center for high-throughput molecular bioscience
Note

QC 20130812

Available from: 2013-08-12 Created: 2013-08-09 Last updated: 2017-12-06Bibliographically approved

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Savolainen, Peter

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Zhang, Ai-bingOskarsson, Mattias C. R.Klütsch, Cornelya F. C.Savolainen, Peter
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Gene TechnologyScience for Life Laboratory, SciLifeLab
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