Spatio-temporal dynamics in collective frog choruses examined by mathematical modeling and field observations

Ikkyu Aihara, Takeshi Mizumoto, Takuma Otsuka, Hiromitsu Awano, Kohei Nagira, Hiroshi G. Okuno, Kazuyuki Aihara

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

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.

Original languageEnglish
Article number3891
JournalScientific Reports
Volume4
DOIs
Publication statusPublished - 2014 Jan 27
Externally publishedYes

ASJC Scopus subject areas

  • General

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