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首页> 外文期刊>Belgian Journal of Zoology >Kinematic analysis of swimming ontogeny in seabass (Dicentrarchus labrax)
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Kinematic analysis of swimming ontogeny in seabass (Dicentrarchus labrax)

机译：鲈鱼（Dicentrarchus labrax）游泳个体发育的运动学分析

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摘要

Swimming has been investigated in multiple species, but few studies consider the establishment of swimming through ontogeny. This study describes the establishment of cyclical swimming in Dicentrachus labrax, a marine fish from cold, temperate waters. The data were compared with results from previous studies on two subtropical freshwater catfish species (Clarias gariepinus and Corydoras aeneus). The three species have different modes of locomotion each during their adult stage (anguilliform, subacarangiform and carangiform). The swimming of Dicentrarchus labrax was recorded with a high-speed video camera (500 fps) from 0 to 288 hours and from 960 to 2496 hours post-hatching. Three indices, i.e. coefficient of determination (r~2), coefficient of variation (CV), and Strouhal number (St), were used to investigate the establishment and efficiency of swimming. Important differences in the timing of swimming establishment were observed between the seabass and the two catfish species. The two catfish species display a sine-shaped swimming mode immediately or soon after hatching, and the efficiency of movement substantially improves during the first days of life. For seabass, however, establishment of swimming is slower during the same developmental period. These differences may be related to a faster developmental rate in the catfishes that allows them to swim rapidly in an intermediate regime flow and to develop the required morphology to establish efficient movements earlier.
机译：已经对多种物种的游泳进行了研究，但是很少有研究考虑通过个体发育建立游泳。这项研究描述了在Dicentrachus labrax（一种来自冷温带水域的海水鱼类）中建立周期性游泳的方法。将该数据与先前对两种亚热带淡水cat鱼物种（Cl鱼和and鱼）的研究结果进行了比较。这三个物种在成年阶段都有各自不同的运动模式（角形，亚头形和头形）。用高速摄像机（500 fps）在孵化后0到288小时以及960到2496小时记录Dicentrarchus labrax的游泳情况。确定系数（r〜2），变异系数（CV）和斯特劳哈尔数（St）这三个指标用于研究游泳的建立和效率。在鲈鱼和两种cat鱼之间，在建立游泳时间上存在重要差异。这两种cat鱼在孵化后立即或不久就显示出正弦形的游泳模式，并且在生命的第一天，其运动效率大大提高。然而，对于鲈鱼而言，在相同的发育时期游泳的速度较慢。这些差异可能与the鱼的较快发育速度有关，后者使fish鱼可以在中间状态下快速游动并发展出所需的形态，从而更早地建立有效的运动。

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