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    Population History and Mitochondrial Genetic Substructure of the Rama Amerindians from Nicaragua

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    Issue Date
    2016
    Author
    Baldi Salas, Norberto Francisco
    Crawford, Michael H.
    Publisher
    Wayne State University Press
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Rights
    Human Biology, Spring 2016, v. 88, no. 2, pp. 168–181. Copyright © 2017 Wayne State University Press, Detroit, Michigan 48201
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    Abstract
    The Rama are a coastal population from southern Nicaragua who in large part were able to resist, at least for a time, the cultural changes and social reorganization brought on by colonial and modern influences. Historical information leaves the Rama origins and biological relationships with nearby extinct and extant groups ambiguous. The objective of this study was to examine the internal genetic microdifferentiation based on the first hypervariable region of the mitochondrial DNA (mtDNA) from a sample of approximately 20% of the population, and to expand the few available historical and anthropological data on the Rama by exploring the effects of cultural practices and historical events on genetic structure, providing an integrative perspective on the Rama genetic history. When considering differences in the spatial distribution and genetic diversity of the mtDNA haplotypes together with historical information on the Rama, a noteworthy pattern emerges. (a) Haplotypes are differentially distributed among a central Rama community (Punta Aguila) compared with the other five peripheral communities (analysis of molecular variance: FCT = 0.10, p < 0.001), and their distribution is consistent with the historical relocation of this population after their split from Punta Gorda in the 18th century. (b) Differential genetic signatures found among central and peripheral Rama communities resemble two population histories: one of stability (haplogroup A2) and other of expansion (haplogroup B2), supporting the possibility that these patterns of genetic microdifferentiation between central and peripheral populations resulted from the 18th-century unification in southern Nicaragua of the Rama and a group of Voto migrants from Costa Rica that later split off and moved to the Bay of Bluefields.
    URI
    http://hdl.handle.net/1808/25303
    DOI
    https://doi.org/10.13110/humanbiology.88.2.0168
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    • Anthropology Scholarly Works [206]
    Citation
    Baldi, N. F., & Crawford, M. H. (2016). Population History and Mitochondrial Genetic Substructure of the Rama Amerindians from Nicaragua. Human Biology, 88(2), 168-181.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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