Multisensory navigational strategies of hatchling fish for dispersal
Multisensory navigational strategies of hatchling fish for dispersal
复制标题
DOI：
10.1016/j.cub.2023.09.070
复制
发表时间：
2023-11-20
期刊：
影响因子：
9.2
通讯作者：
Ehrlich，David E.
中科院分区：
文献类型：
--
作者：
Lin，Allia;Alvarez-Salvado，Efren;Ehrlich，David E.
动物通过感知当地信号并适应它们的移动方式来影响它们在环境中的分散方式。然而，当动物的感知和移动能力往往更加有限时，控制扩散可能会在生命早期带来特殊的挑战。新孵化的鱼可以在多大程度上以及通过什么机制控制它们的分散方式？在这里，我们通过结合游泳追踪和模型物种斑马鱼的精确感觉操纵，揭示了控制扩散的孵化感觉运动机制。在受控实验室实验中，如果我们通过视觉和侧线对幼体进行物理限制或阻止运动感觉，幼体会通过提高浮力并以更快的表面水流被动移动来做出反应。作为补充，在死水中，幼体通过超稳定的游泳覆盖更多的地面，并根据重力感受进行强烈的定向。使用经过实验校准的流体动力学模拟，我们表明这些孵化行为使扩散率几乎增加了三倍，并使扩散对当地条件具有鲁棒性，这表明这种多感官策略可能为可变环境中的早期生命提供重要优势。
Animals influence how they disperse in the environment by sensing local cues and adapting how they move. However, controlling dispersal can present a particular challenge early in life when animals tend to be more limited in their capacities to sense and move. To what extent and by what mechanisms can newly hatched fish control how they disperse? Here, we reveal hatchling sensorimotor mechanisms for controlling dispersal by combining swim tracking and precise sensory manipulations of a model species, zebrafish. In controlled laboratory experiments, if we physically constrained hatchlings or blocked sensations of motion through vision and the lateral line, hatchlings responded by elevating their buoyancy and passively moving with faster surface currents. Complementarily, in stagnant water, hatchlings covered more ground using hyperstable swimming, strongly orienting based on graviception. Using experimentally calibrated hydrodynamic simulations, we show that these hatchling behaviors nearly tripled diffusivity and made dispersal robust to local conditions, suggesting this multisensory strategy may provide important advantages for early life in a variable environment.