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Title: Spatio-temporal dynamics in collective frog choruses examined by mathematical modeling and field observations.
Authors: Aihara, Ikkyu
Mizumoto, Takeshi
Otsuka, Takuma
Awano, Hiromitsu  kyouindb  KAKEN_id
Nagira, Kohei
Okuno, Hiroshi G
Aihara, Kazuyuki
Author's alias: 奥乃, 博
Keywords: Theoretical ecology
Animal behaviour
Complex networks
Nonlinear phenomena
Issue Date: 27-Jan-2014
Publisher: Nature Publishing Group
Journal title: Scientific reports
Volume: 4
Thesis number: 3891
Abstract: 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.
Description: カエルの合唱の法則を数学と光計測を使って発見. 京都大学プレスリリース. 2014-01-27.
Rights: This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit
DOI(Published Version): 10.1038/srep03891
PubMed ID: 24463569
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