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    Hybridization Associated with Cycles of Ecological Succession in a Passerine Bird

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    Author
    Duckworth, Renée A.
    Semenov, Georgy A.
    Affiliation
    Univ Arizona, Dept Ecol & Evolutionary Biol
    Issue Date
    2017-10
    Keywords
    hybridization
    competition
    ecological succession
    Sialia
    population size
    species replacement
    
    Metadata
    Show full item record
    Publisher
    UNIV CHICAGO PRESS
    Citation
    Hybridization Associated with Cycles of Ecological Succession in a Passerine Bird 2017, 190 (4):E94 The American Naturalist
    Journal
    The American Naturalist
    Rights
    © 2017 by The University of Chicago. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Identifying the diversity of contexts that can lead to hybridization is important for understanding its prevalence and dynamics in natural populations. Despite the potential of ecological succession to dramatically alter species co-occurrence and abundances, it is unknown whether it directly promotes hybridization and, if so, has long-lasting consequences. Here, we summarize 30 years of survey data across 10 populations to show that in western and mountain bluebirds, heterospecific pairing occurs during repeatable and transient colonization events at the early stages of species turnover. Despite mixed pairing occurring only during early succession, genetic data showed presence of hybrids at both early and late successional stages. Moreover, hybrids showed novel patterns of variation in morphology and behavior, emphasizing that even ephemeral contexts for hybridization can have important evolutionary consequences. Our results suggest that because ecological succession often brings together closely related competitors in disparate numbers but lasts for only a brief period of time, it may be a widespread but underappreciated context for hybridization.
    Note
    12 month embargo; Published online: 16 Aug 2017.
    ISSN
    0003-0147
    1537-5323
    PubMed ID
    28937808
    DOI
    10.1086/693160
    Version
    Final published version
    Sponsors
    National Science Foundation [DEB-918095, DEB-1350107]; Simpson Fellowship
    Additional Links
    http://www.journals.uchicago.edu/doi/10.1086/693160
    ae974a485f413a2113503eed53cd6c53
    10.1086/693160
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    UA Faculty Publications

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