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Vanishing native American dog lineages

Discussion in 'Dog Health and Nutrition' started by Corinthian, Mar 22, 2011.


  1. Corinthian

    Corinthian PetForums Member

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    Abstract | Vanishing native American dog lineages

    Vanishing native American dog lineages

    Santiago Castroviejo-Fisher email, Pontus Skoglund email, Raul Valadez email, Carles Vila email and Jennifer A Leonard email

    BMC Evolutionary Biology 2011, 11:73doi:10.1186/1471-2148-11-73
    Published: 21 March 2011
    Abstract (provisional)

    Background

    Dogs were an important element in many native American cultures at the time Europeans arrived. Although previous ancient DNA studies revealed the existence of unique native American mitochondrial sequences, these have not been found in modern dogs, mainly purebred, studied so far.
    Results

    We identified many previously undescribed mitochondrial control region sequences in 400 dogs from rural and isolated areas as well as street dogs from across the Americas. However, sequences of native American origin proved to be exceedingly rare, and we estimate that the native population contributed only a minor fraction of the gene pool that constitutes the modern population.
    Conclusions

    The high number of previously unidentified haplotypes in our sample suggests that a lot of unsampled genetic variation exists in non-breed dogs. Our results also suggest that the arrival of European colonists to the Americas may have led to an extensive replacement of the native American dog population by the dogs of the invaders.
     
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