Lateral line layout correlates with the differential hydrodynamic pressure on swimming fish.
Lateral line layout correlates with the differential hydrodynamic pressure on swimming fish.
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DOI：
10.1103/physrevlett.114.018102
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发表时间：
2015-01-09
影响因子：
8.6
通讯作者：
Zhang J
中科院分区：
文献类型：
--
作者：
Ristroph L;Liao JC;Zhang J
侧线的鱼包括运河子系统，检测流体动力学压力梯度，并被认为是重要的游泳行为，如趋流性和猎物跟踪。在这里，我们探讨的假设，这种感觉系统是集中在位置的压力变化是最大的运动通过水。使用高保真模型的虹鳟鱼，我们模仿游泳过程中遇到的流动，同时测量压力与精细的空间和时间分辨率。在身体方向的扰动和干扰传入流的压力的变化被认为是与感觉网络。这些发现支持了侧线作为“流体动力学天线”的观点，该天线被配置为检索流信号，并且还为不同物种的几乎普遍的感觉布局提出了物理解释。
The lateral line of fish includes the canal subsystem that detects hydrodynamic pressure gradients and is thought to be important in swimming behaviors such as rheotaxis and prey tracking. Here, we explore the hypothesis that this sensory system is concentrated at locations where changes in pressure are greatest during motion through water. Using high-fidelity models of rainbow trout, we mimic the flows encountered during swimming while measuring pressure with fine spatial and temporal resolution. The variations in pressure for perturbations in body orientation and for disturbances to the incoming stream are seen to correlate with the sensory network. These findings support a view of the lateral line as a “hydrodynamic antenna” that is configured to retrieve flow signals and also suggest a physical explanation for the nearly universal sensory layout across diverse species.