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    A Molecular Phylogeny of Black-Tyrants (Tyrannidae: Knipolegus) Reveals Strong Geographic Patterns and Homoplasy in Plumage and Display Behavior

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    Issue Date
    2012-01
    Author
    Hosner, Peter A.
    Moyle, Robert G.
    Publisher
    University of California Press
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    We present the first molecular phylogenetic hypothesis for Knipolegus (black-tyrants), a widespread genus of South American tyrant-flycatchers, based on nuclear and mitochondrial DNA sequences. Bayesian and maximum-likelihood analyses support three clades within Knipolegus, one confined to northern South America, one confined to southeast Brazil, and one confined to the Southern Cone and southern Andes. Within each clade, two or more species are broadly sympatric or parapatric, overlapping in general distribution but differing in habitat specialization. Maximum-likelihood ancestral state reconstructions using an equal-rate stochastic model support a single origin of austral migration in the southern group. Contrasting with these strong geographic patterns, ancestral state reconstructions of plumage and display evolution were more complex, with multiple inferred character-state changes. Ancestral state reconstructions suggest a sexually dimorphic ancestor of Knipolegus, and sexually similar plumages are the result of three independent character-state changes: one in male plumage and two in female plumage. Ancestral state reconstructions support the conclusion that flight displays with mechanical sounds originated in the Knipolegus ancestor, and loss of mechanical sounds in flight displays occurred twice.
    Description
    This is the Publisher's version, also available from http://www.bioone.org/doi/abs/10.1525/auk.2012.11101.
    URI
    http://hdl.handle.net/1808/13333
    DOI
    https://doi.org/10.1525/auk.2012.11101
    ISSN
    0004-8038
    Collections
    • Ecology and Evolutionary Biology Scholarly Works [1376]
    Citation
    Hosner, Peter A; and Moyle, Robert G. 2012. A molecular phylogeny of black-tyrants (Tyrannidae: Knipolegus) reveals strong geographic patterns and homoplasy in plumage and display behavior. Auk 129:156-167. http://dx.doi.org/10.1525/auk.2012.11101

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    785-864-8983
    KU Libraries
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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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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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