Spatio-Temporal Dynamics in Collective Frog Choruses Examined by Mathematical Modeling and Field Observations

This paper reports theoretical and experimental studies on spatio-temporal dynamics in the choruses of male Japanese tree frogs. First, we theoretically model their calling times and positions as a system of coupled mobile oscillators. Numerical simulation of the model as well as calculation of the...

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Bibliographic Details
Published in:Scientific reports 2014-01, Vol.4 (1), p.3891-3891, Article 3891
Main Authors: Aihara, Ikkyu, Mizumoto, Takeshi, Otsuka, Takuma, Awano, Hiromitsu, Nagira, Kohei, Okuno, Hiroshi G., Aihara, Kazuyuki
Format: Article
Language:English
Subjects:
631/158/2451
631/601/18
639/766/530/2801
639/766/530/2803
Amphibians
Breeding sites
Frogs
Humanities and Social Sciences
Mathematical models
multidisciplinary
Oscillators
Science
Simulation
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Summary:This paper reports theoretical and experimental studies on spatio-temporal dynamics in the choruses of male Japanese tree frogs. First, we theoretically model their calling times and positions as a system of coupled mobile oscillators. Numerical simulation of the model as well as calculation of the order parameters show that the spatio-temporal dynamics exhibits bistability between two-cluster antisynchronization and wavy antisynchronization, by assuming that the frogs are attracted to the edge of a simple circular breeding site. Second, we change the shape of the breeding site from the circle to rectangles including a straight line and evaluate the stability of two-cluster and wavy antisynchronization. Numerical simulation shows that two-cluster antisynchronization is more frequently observed than wavy antisynchronization. Finally, we recorded frog choruses at an actual paddy field using our sound-imaging method. Analysis of the video demonstrated a consistent result with the aforementioned simulation: namely, two-cluster antisynchronization was more frequently realized.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep03891