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    Why Have Multiple Plastic Responses? Interactions between Color Change and Heat Avoidance Behavior in Battus philenor Larvae

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    Author
    Nielsen, Matthew E.
    Papaj, Daniel R.
    Affiliation
    Univ Arizona, Dept Ecol & Evolutionary Biol
    Issue Date
    2017-06
    Keywords
    phenotypic plasticity
    temperature
    color
    behavior
    functional integration
    Battus philenor
    
    Metadata
    Show full item record
    Publisher
    UNIV CHICAGO PRESS
    Citation
    Why Have Multiple Plastic Responses? Interactions between Color Change and Heat Avoidance Behavior in Battus philenor Larvae 2017, 189 (6):657 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
    Having multiple plastic responses to a change in the environment, such as increased temperature, can be adaptive for two major reasons: synergy (the plastic responses perform better when expressed simultaneously) or complementarity (each plastic response provides a greater net benefit in a different environmental context). We investigated these hypotheses for two forms of temperature-induced plasticity of Battus philenor caterpillars in southern Arizona populations: color change (from black to red at high temperatures) and heat avoidance behavior (movement from host to elevated refuges at high host temperatures). Field assays using aluminum models showed that the cooling effect of the red color is greatly reduced in a refuge position relative to that on a host. Field assays with live caterpillars demonstrated that refuge seeking is much more important for survival under hot conditions than coloration; however, in those assays, red coloration reduced the need to seek refuges. Our results support the complementarity hypothesis: refuge seeking facilitates survival during daily temperature peaks, while color change reduces the need to leave the host over longer warm periods. We propose that combinations of rapid but costly short-term behavioral responses and slow but efficient long-term morphological responses may be common when coping with temperature change.
    Note
    12 month embargo; Published Online: Mar 28, 2017
    ISSN
    0003-0147
    1537-5323
    PubMed ID
    28514633
    DOI
    10.1086/691536
    Version
    Final published version
    Sponsors
    National Science Foundation [DGE-1143953]
    Additional Links
    http://www.journals.uchicago.edu/doi/10.1086/691536
    ae974a485f413a2113503eed53cd6c53
    10.1086/691536
    Scopus Count
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    UA Faculty Publications

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