Aihara Ikkyu
Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Jul;80(1 Pt 1):011918. doi: 10.1103/PhysRevE.80.011918. Epub 2009 Jul 23.
We experimentally observed synchronized calling behavior of male Japanese tree frogs Hyla japonica; namely, while isolated single frogs called nearly periodically, a pair of interacting frogs called synchronously almost in antiphase or inphase. In this study, we propose two types of phase-oscillator models on different degrees of approximations, which can quantitatively explain the phase and frequency properties in the experiment. Moreover, it should be noted that, although the second model is obtained by fitting to the experimental data of the two synchronized states, the model can also explain the transitory dynamics in the interactive calling behavior, namely, the shift from a transient inphase state to a stable antiphase state. We also discuss the biological relevance of the estimated parameter values to calling behavior of Japanese tree frogs and the possible biological meanings of the synchronized calling behavior.
我们通过实验观察到日本树蛙（Hyla japonica）雄性的同步鸣叫行为；也就是说，虽然孤立的单只青蛙几乎周期性地鸣叫，但一对相互作用的青蛙几乎以反相或同相同步鸣叫。在本研究中，我们提出了两种不同近似程度的相位振荡器模型，它们可以定量解释实验中的相位和频率特性。此外，应该注意的是，尽管第二个模型是通过拟合两种同步状态的实验数据得到的，但该模型也可以解释交互式鸣叫行为中的瞬态动力学，即从瞬态同相状态到稳定反相状态的转变。我们还讨论了估计参数值与日本树蛙鸣叫行为的生物学相关性以及同步鸣叫行为可能的生物学意义。
