Paris-Saclay Institute of Neuroscience, CNRS UMR9197, Université Paris-Saclay, Gif-sur-Yvette, France.
Equipe Neuro-Ethologie Sensorielle ENES/Neuro-PSI CNRS UMR9197, Université de Lyon/Saint-Etienne, Saint-Etienne, France.
Nat Commun. 2019 Sep 17;10(1):4231. doi: 10.1038/s41467-019-12078-9.
Acoustic communication allows the exchange of information within specific contexts and during specific behaviors. The blind, cave-adapted and the sighted, river-dwelling morphs of the species Astyanax mexicanus have evolved in markedly different environments. During their evolution in darkness, cavefish underwent a series of morphological, physiological and behavioral changes, allowing the study of adaptation to drastic environmental change. Here we discover that Astyanax is a sonic species, in the laboratory and in the wild, with sound production depending on the social contexts and the type of morph. We characterize one sound, the "Sharp Click", as a visually-triggered sound produced by dominant surface fish during agonistic behaviors and as a chemosensory-, food odor-triggered sound produced by cavefish during foraging. Sharp Clicks also elicit different reactions in the two morphs in play-back experiments. Our results demonstrate that acoustic communication does exist and has evolved in cavefish, accompanying the evolution of its behaviors.
声学通讯允许在特定情境和特定行为中交换信息。物种 Astyanax mexicanus 的盲鱼、洞穴适应和有视力、河流居住的形态在明显不同的环境中进化。在黑暗中进化的过程中，洞穴鱼经历了一系列形态、生理和行为上的变化，从而能够研究适应剧烈环境变化的能力。在这里，我们发现 Astyanax 是一种声学物种，无论是在实验室还是在野外，其声音的产生都取决于社会环境和形态类型。我们将一种声音，即“Sharp Click”，描述为一种由占优势的表面鱼类在争斗行为中产生的视觉触发声音，也是一种由洞穴鱼在觅食过程中产生的化学感觉、食物气味触发的声音。Sharp Clicks 在回放实验中也会引起两种形态的不同反应。我们的结果表明，声学通讯确实存在于洞穴鱼中，并伴随着其行为的进化而进化。
