The evolutionary history of dogs in the Americas

Leathlobhair, Maire Ni, Perri, Angela R, Irving-Pease, Evan K, Witt, Kelsey E, Linderholm, Anna, Haile, James, Lebrasseur, Ophelie ORCID: 0000-0003-0687-8538, Ameen, Carly, Blick, Jeffrey, Boyko, Adam R
et al (show 40 more authors) (2018) The evolutionary history of dogs in the Americas. SCIENCE, 361 (6397). 81-+.

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Dogs were present in the Americas before the arrival of European colonists, but the origin and fate of these precontact dogs are largely unknown. We sequenced 71 mitochondrial and 7 nuclear genomes from ancient North American and Siberian dogs from time frames spanning ~9000 years. Our analysis indicates that American dogs were not derived from North American wolves. Instead, American dogs form a monophyletic lineage that likely originated in Siberia and dispersed into the Americas alongside people. After the arrival of Europeans, native American dogs almost completely disappeared, leaving a minimal genetic legacy in modern dog populations. The closest detectable extant lineage to precontact American dogs is the canine transmissible venereal tumor, a contagious cancer clone derived from an individual dog that lived up to 8000 years ago.

Item Type: Article
Uncontrolled Keywords: Cell Nucleus, Animals, Dogs, Wolves, Humans, Sexually Transmitted Diseases, Neoplasms, Dog Diseases, Phylogeny, Americas, Siberia, Genome, Mitochondrial, Biological Evolution, Human Migration, Domestication
Depositing User: Symplectic Admin
Date Deposited: 09 Jul 2018 06:10
Last Modified: 19 Jan 2023 01:30
DOI: 10.1126/science.aao4776
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