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Nature 400, 211-213 (15 July 1999) | doi:10.1038/22211

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Behavioural ecology:  Electrifying diversity

Michael J. Ryan1

Sexual selection often favours signals that are conspicuous; the more conspicuous the signal, the more attractive the signaller is to mates1. But conspicuousness incurs a cost because predators can eavesdrop; the more conspicuous the signal, the more risky it is.

  1. Michael J. Ryan is in the Section of Integrative Biology, University of Texas, Austin, Texas 78712, USA.
    e-mail: Email: mryan@mail.utexas.edu