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首页> 外文期刊>Bioinspiration & biomimetics >Canal neuromasts enhance foraging in zebrafish (Danio rerio)
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Canal neuromasts enhance foraging in zebrafish (Danio rerio)

机译：运河神经孢状虫在斑马鱼（Danio Rerio）中觅食

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摘要

Aquatic animals commonly sense flow using superficial neuromasts (SNs), which are receptors that extend from the body's surface. The lateral line of fishes is unique among these systems because it additionally possesses receptors, the canal neuromasts (CNs), that are recessed within a channel. The lateral line has inspired the development of engineered sensors and concepts in the analysis of flow fields for submersible navigation. The biophysics of CNs are known to be different from the SNs and thereby offer a distinct submodality. However, it is generally unclear whether CNs play a distinct role in behavior. We therefore tested whether CNs enhance foraging in the dark by zebrafish (Danio rerio), a behavior that we elicited with a vibrating rod. We found that juvenile fish, which have only SNs, bite at this rod at about one-third the rate and from as little as one-third the distance of adults for a high-frequency stimulus (50 < f < 100 Hz). We used novel techniques for manipulating the lateral line in adults to find that CNs offered only a modest benefit at a lower frequency (20 Hz) and that foraging was mediated entirely by cranial neuromasts. Consistent with our behavioral results, biophysical models predicted CNs to be more than an order of magnitude more sensitive than SNs at high frequencies. This enhancement helps to overcome the rapid spatial decay in high-frequency components in the flow around the stimulus. These findings contrast what has been previously established for fishes that are at least ten-times the length of zebrafish, which use trunk CNs to localize prey. Therefore, CNs generally enhance foraging, but in a manner that varies with the size of the fish and its prey. These results have the potential to improve our understanding of flow sensing in aquatic animals and engineered systems.
机译：水生动物通常使用浅表性神经孢子（SNS）的感测流，这是从身体表面延伸的受体。这些系统中的鱼类的横向线是独特的，因为它另外具有在通道内凹陷的管神经孢子（CNS）。横向线启发了在分析潜水领域的流场分析中的工程传感器和概念的发展。已知CNS的生物物理学与SNS不同，从而提供不同的潜水性。然而，通常不清楚CNS是否在行为中发挥着不同的作用。因此，我们测试了CNS是否通过斑马鱼（Danio Rerio）在黑暗中加强觅食，这是我们引发振动杆的行为。我们发现少年鱼，只有SNS，在这个杆上大约咬了大约三分之一的速率，并且从成年人的距离几乎少一点，对于高频刺激（50

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