The lateral line is the primary modality fish use to create a hydrodynamic image of their environment. These images contribute to a variety of behaviors, from rheotaxis to escape responses. Here we discern the contributions of visual and lateral line modalities in hunting behavior of larvae that have developed under different photic conditions. In particular, cave animals have a hypertrophied sense of mechanosensation, and we studied the common animal model cavefish Astyanax mexicanus and its closest related surface relative. We raised larvae in a diurnal light‐dark regimen and in complete darkness. We then examined the distribution of neuromasts in their lateral lines, and their hunting performance in light and dark conditions, with and without the contribution of the lateral line. We report that all larva depend on the lateral line for success in hunting and that surface fish raised in the dark have a greater dependency on the lateral line.

中文翻译：

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侧线的形态延展性允许表面鱼 (Astyanax mexicanus) 适应洞穴环境。

侧线是鱼类用于创建其环境的水动力图像的主要方式。这些图像有助于各种行为，从流变到逃避反应。在这里，我们辨别视觉和侧线方式在不同光照条件下发育的幼虫狩猎行为中的贡献。特别是洞穴动物具有肥大的机械感觉，我们研究了常见的动物模型洞穴鱼Astyanax mexicanus及其最接近的相关表面相对。我们在昼夜明暗方案和完全黑暗的环境中饲养幼虫。然后，我们检查了神经瘤在其侧线中的分布，以及它们在光照和黑暗条件下的狩猎表现，无论有无侧线的贡献。我们报告说，所有的幼虫都依赖于侧线在狩猎中取得成功，而在黑暗中饲养的水面鱼对侧线的依赖性更大。