X-chromosomal window into the evolutionary history of the guenons (Primates: Cercopithecini)

Anthony J. Tosi, Kate M. Detwiler, Todd Disotell

    Research output: Contribution to journalArticle

    Abstract

    Molecular studies of the guenons suggest that the arboreal Cercopithecus species form a monophyletic group within the tribe Cercopithecini. However, the evolutionary relationships among these arboreal congeners remain poorly resolved. The present work marks the first attempt to reconstruct the history of this group through the phylogenetic analysis of long nuclear sequences. We surveyed 19 guenons and seven outgroup taxa for a ∼9.3 kb fragment of X-chromosomal DNA homologous to a portion of human Xq13.3. Parsimony and maximum likelihood analyses of these sequences consistently recover two strongly-supported patterns within the arboreal Cercopithecus clade: (1) a clustering of members of the cephus and mitis species groups, and (2) a monophyletic aggregate including the mona, neglectus, and diana species groups. Although guenons occasionally hybridize in the wild, interbreeding forms of different species groups do not cluster together as sister-taxa in the X-chromosomal tree, suggesting that the two clades inferred here are not reticulate patterns due to recent gene flow. These clades are most likely the result of either ancestral hybridization or true phylogenetic history. We advocate the latter explanation because the same two aggregates (cephus/mitis and mona/neglectus/diana) are recovered, albeit with weak support, by a number of earlier analyses. Finally, X-chromosomal divergence dates are estimated for a number of nodes in the guenon radiation. The divergence of guenon and papionin lineages at 11.5 (±1.3) MYA appears to be a particularly robust estimate since it is inferred from both mitochondrial and X-chromosomal studies, each using different fossil calibration points.

    Original languageEnglish (US)
    Pages (from-to)58-66
    Number of pages9
    JournalMolecular Phylogenetics and Evolution
    Volume36
    Issue number1
    DOIs
    StatePublished - Jul 2005

    Fingerprint

    primate
    Primates
    Cephus
    Cercopithecus
    History
    history
    divergence
    arboreal species
    phylogenetics
    tribal peoples
    gene flow
    Fossils
    Gene Flow
    phylogeny
    fossil
    Calibration
    calibration
    Sequence Analysis
    Cluster Analysis
    DNA

    Keywords

    • Cercopithecini
    • Cercopithecus
    • Guenons
    • Papionini
    • X-chromosome
    • Xq13.3

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Genetics
    • Molecular Biology

    Cite this

    X-chromosomal window into the evolutionary history of the guenons (Primates : Cercopithecini). / Tosi, Anthony J.; Detwiler, Kate M.; Disotell, Todd.

    In: Molecular Phylogenetics and Evolution, Vol. 36, No. 1, 07.2005, p. 58-66.

    Research output: Contribution to journalArticle

    Tosi, Anthony J. ; Detwiler, Kate M. ; Disotell, Todd. / X-chromosomal window into the evolutionary history of the guenons (Primates : Cercopithecini). In: Molecular Phylogenetics and Evolution. 2005 ; Vol. 36, No. 1. pp. 58-66.
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