Ota Kaiichiro, Aihara Ikkyu, Aoyagi Toshio
Cybozu, Inc., Tokyo, Japan.
JST CREST, Tokyo, Japan.
R Soc Open Sci. 2020 Mar 18;7(3):191693. doi: 10.1098/rsos.191693. eCollection 2020 Mar.
We employ a mathematical model (a phase oscillator model) to describe the deterministic and stochastic features of frog choruses in which male frogs attempt to avoid call overlaps. The mathematical model with a general interaction term is identified using a Bayesian approach, and it qualitatively reproduces the stationary and dynamical features of the empirical data. In addition, we quantify the magnitude of attention paid among the male frogs from the identified model, and then analyse the relationship between attention and behavioural parameters using a statistical approach. Our analysis demonstrates a negative correlation between attention and inter-frog distance, and also suggests a behavioural strategy in which male frogs selectively attend to a less attractive male frog (i.e. a male producing calls at longer intervals) in order to more effectively advertise their superior relative attractiveness to females.
我们采用一个数学模型（相位振荡器模型）来描述雄蛙试图避免叫声重叠的蛙鸣中的确定性和随机性特征。使用贝叶斯方法识别具有一般相互作用项的数学模型，并且它定性地再现了经验数据的稳态和动态特征。此外，我们从识别出的模型中量化雄蛙之间的关注程度，然后使用统计方法分析关注与行为参数之间的关系。我们的分析表明关注与蛙间距离之间存在负相关，并且还提出了一种行为策略，即雄蛙选择性地关注吸引力较小的雄蛙（即叫声间隔较长的雄蛙），以便更有效地向雌蛙宣传它们相对更高的吸引力。
