• Singing of Neoconocephalus robustus as an example of deterministic chaos in insects

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      https://www.ias.ac.in/article/fulltext/jbsc/032/04/0797-0804

    • Keywords

       

      Chaos; time series analysis; insect sound; katydid

    • Abstract

       

      We use nonlinear time series analysis methods to analyse the dynamics of the sound-producing apparatus of the katydid Neoconocephalus robustus. We capture the dynamics by analysing a recording of the singing activity. First, we reconstruct the phase space from the sound recording and test it against determinism and stationarity. After confirming determinism and stationarity, we show that the maximal Lyapunov exponent of the series is positive, which is a strong indicator for the chaotic behaviour of the system. We discuss that methods of nonlinear time series analysis can yield instructive insights and foster the understanding of acoustic communication among insects.

    • Author Affiliations

       

      Tina P Benko1 Matjaž Perc2

      1. Department of Biology, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška cesta 160, SI-2000 Maribor, Slovenia
      2. Department of Physics, Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška cesta 160, SI-2000 Maribor, Slovenia
    • Dates

       
  • Journal of Biosciences | News

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