Turning kinematics of the scyphomedusa Aurelia aurita
Turning kinematics of the scyphomedusa Aurelia aurita
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DOI：
10.1088/1748-3190/ad1db8
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发表时间：
2024-03-01
影响因子：
3.4
通讯作者：
Kanso，E. A.
中科院分区：
文献类型：
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作者：
Costello，J. H.;Colin，S. P.;Kanso，E. A.
Scyphomedusae在海洋中广泛分布，它们的游泳为动物推进的流体动力学提供了宝贵的见解。大多数研究都集中在对称的线性游泳上。然而，在自然界中，水母通常游泳迂回，非线性路径涉及频繁转弯。在这里，我们描述了游泳圈的scyphomedusa奥雷利亚aurita在此期间，不对称的钟缘运动产生旋转的线性平移身体中心。这些水母通过转弯和相对钟形边缘之间的倾斜度“打滑”，是脉动周期中转弯幅度的近似预测因子。基本的神经机械组织的钟收缩大大有助于异步钟运动，并插入一个随机的旋转组件到scyphomedusan游泳的方向性。这些力学是重要的自然种群，因为异步钟状收缩模式是常见的原位，并导致频繁的轮流自然游泳水母。
Scyphomedusae are widespread in the oceans and their swimming has provided valuable insights into the hydrodynamics of animal propulsion. Most of this research has focused on symmetrical, linear swimming. However, in nature, medusae typically swim circuitous, nonlinear paths involving frequent turns. Here we describe swimming turns by the scyphomedusa Aurelia aurita during which asymmetric bell margin motions produce rotation around a linearly translating body center. These jellyfish'skid'through turns and the degree of asynchrony between opposite bell margins is an approximate predictor of turn magnitude during a pulsation cycle. The underlying neuromechanical organization of bell contraction contributes substantially to asynchronous bell motions and inserts a stochastic rotational component into the directionality of scyphomedusan swimming. These mechanics are important for natural populations because asynchronous bell contraction patterns are common in situ and result in frequent turns by naturally swimming medusae.