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    Inter-signal interaction and uncertain information in anuran multimodal signals

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    Inter-signal interaction and uncertain information in anuran.pdf (537.9Kb)
    Links to Files
    https://doi.org/10.1093/czoolo/57.2.153
    Permanent Link
    http://hdl.handle.net/11603/7389
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    • SU Biological Sciences Department
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    Author/Creator
    Taylor, Ryan
    Klein, Barrett
    Ryan, Michael
    Date
    2011
    Type of Work
    9 pages
    Text
    journal articles
    research articles
    Citation of Original Publication
    Taylor, Ryan C., Barrett A. Klein, and Michael J. Ryan. "Inter-signal interaction and uncertain information in anuran multimodal signals." Current Zoology 57, no. 2 (2011): 153-161.
    Subjects
    Inter-signal interaction
    Multimodal signaling
    Signal detection
    Signal weighting
    Squirrel treefrog
    Hyla squirella
    Túngara frog
    Physalaemus pustulosus
    Vocal sac
    Abstract
    Disentangling the influence of multiple signal components on receivers and elucidating general processes influencing complex signal evolution are difficult tasks. In this study we test mate preferences of female squirrel treefrogs Hyla squirella and female túngara frogs Physalaemus pustulosus for similar combinations of acoustic and visual components of their multimodal courtship signals. In a two-choice playback experiment with squirrel treefrogs, the visual stimulus of a male model significantly increased the attractivness of a relatively unattractive slow call rate. A previous study demonstrated that faster call rates are more attractive to female squirrel treefrogs, and all else being equal, models of male frogs with large body stripes are more attractive. In a similar experiment with female túngara frogs, the visual stimulus of a robotic frog failed to increase the attractiveness of a relatively unattractive call. Females also showed no preference for the distinct stripe on the robot that males commonly bear on their throat. Thus, features of conspicuous signal components such as body stripes are not universally important and signal function is likely to differ even among species with similar ecologies and communication systems. Finally, we discuss the putative information content of anuran signals and suggest that the categorization of redundant versus multiple messages may not be sufficient as a general explanation for the evolution of multimodal signaling. Instead of relying on untested assumptions concerning the information content of signals, we discuss the value of initially collecting comparative empirical data sets related to receiver responses.

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    Salisbury University
    Guerrieri Academic Commons
    1101 Camden Ave.
    Salisbury, MD 21801

    www.salisbury.edu

    Contact Information:
    Email: SOAR@salisbury.edu
    Phone: 410.543.6206


    If you wish to submit a copyright complaint or withdrawal request, please email mdsoar-help@umd.edu.