A novel mechanism for mechanosensory-based rheotaxis in larval zebrafish.
A novel mechanism for mechanosensory-based rheotaxis in larval zebrafish.
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DOI：
10.1038/nature23014
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发表时间：
2017-07-27
期刊：
影响因子：
64.8
通讯作者：
Engert F
中科院分区：
文献类型：
--
作者：
Oteiza P;Odstrcil I;Lauder G;Portugues R;Engert F
当飞行或游泳时，动物必须调整自己的运动，以补偿周围空气或水的流动引起的位移。这些流动引起的位移可以最容易地被检测为相对于动物的参考系的视觉全场运动。尽管如此，许多水生动物即使在没有视觉线索的情况下，也会始终如一地定向并逆着迎面而来的水流游泳（这种行为称为趋流性）。动物是如何完成这项任务的，以及它背后的感觉基础，仍然是未知的。在这里，我们表明，在视觉信息的情况下，幼斑马鱼（斑马鱼）执行rheotaxis通过使用流速梯度作为导航线索。我们提出的行为数据，支持一种新的算法的基础上，这种局部速度梯度，鱼使用，以有效地避免被流水拖动。具体而言，我们表明，鱼使用他们的mechanosensory侧线，首先感觉到当地的速度矢量场的卷曲（或涡度），以检测流的存在，其次，测量其时间变化游泳回合后推断流动方向。这些结果揭示了一个优雅的导航策略的基础上感测的流速梯度，并提供了一个全面的行为算法，也适用于机器人设计，概括到广泛的动物行为在移动的流体。
When flying or swimming, animals must adjust their own movement to compensate for displacements induced by the flow of the surrounding air or water. These flow-induced displacements can most easily be detected as visual whole-field motion with respect to the animal’s frame of reference. In spite of this, many aquatic animals consistently orient and swim against oncoming flows (a behavior known as rheotaxis) even in the absence of visual cues. How animals achieve this task, and its underlying sensory basis, is still unknown. Here we show that in the absence of visual information, larval zebrafish (Danio rerio) perform rheotaxis by using flow velocity gradients as navigational cues. We present behavioral data that support a novel algorithm based on such local velocity gradients that fish use to efficiently avoid getting dragged by flowing water. Specifically, we show that fish use their mechanosensory lateral line to first sense the curl (or vorticity) of the local velocity vector field to detect the presence of flow and, second, measure its temporal change following swim bouts to deduce flow direction. These results reveal an elegant navigational strategy based on the sensing of flow velocity gradients and provide a comprehensive behavioral algorithm, also applicable for robotic design, that generalizes to a wide range of animal behaviors in moving fluids.
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影响因子：
8.6
作者：
Ristroph L;Liao JC;Zhang J
通讯作者：
Zhang J
影响因子：
3
作者：
Olive R;Wolf S;Dubreuil A;Bormuth V;Debrégeas G;Candelier R
通讯作者：
Candelier R
影响因子：
64.8
作者：
Montgomery, JC;Baker, CF;Carton, AG
通讯作者：
Carton, AG
DOI：
10.1111/j.1469-185x.1963.tb00654.x
发表时间：
1963-01-01
影响因子：
--
作者：
DIJKGRAAF, S
通讯作者：
DIJKGRAAF, S
影响因子：
2.8
作者：
Carlson, Rose L.;Lauder, George V.
通讯作者：
Lauder, George V.