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  • 1
    ISSN: 1432-1351
    Keywords: Orthoptera ; Tettigonioidea Acoustic communication ; Duetting ; Song models
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Mate finding in the phaneropterid bushcricket Ancistrura nigrovittata is achieved by a duet, where the female replies with a short sound to the male song. In experiments with artificial song models we analysed the parameters necessary for eliciting a female response. A verse of the male song consists of a group of 5–9 syllabes which after an interval of about 400 ms is followed by a final syllable. The female response was shown to depend on two processes: (i) recognition of the syllable group as belonging to a conspecific male and (ii) perception of the final syllable as a trigger. Critical parameters for the recognition process are the duration of syllables and syllable pauses, as well as the number of syllables in a group. However, even with an optimal syllable group, the response probability still depends on the interval between the syllable group and the final syllable. The female only responds when the final syllable of the male song occurs within a 250 ms long time window begining approximately 250 ms after the end of the male's syllable group. Her reply consists of a single tick, which follows the male's final syllable with a latency of only 25 ms.
    Type of Medium: Electronic Resource
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