Types of locomotion in ophiurans
Types of locomotion in ophiurans
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蛇尾类的运动类型
DOI：
10.1007/bf01063602
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发表时间：
2005
期刊：
影响因子：
0.5
通讯作者：
A. G. Fel'dman
中科院分区：
文献类型：
--
作者：
Yu. I. Arshavskii;S. Kashin;N. M. Litvinova;G. N. Orlovskiĭ;A. G. Fel'dman
拍摄了生活在日本海的两种蛇类的运动照片：Ophiura sarsi vadicoa Djakonov和Amphipholis kochii Lutken。发现Ophiura sarsi借助两对手臂的划水运动：第五臂（被动）指向后方。这个物种的蛇夫座不使用他们的步带足。高氏文昌鱼的运动主要分为三种类型：第一种是“蛙泳”运动，即一只手臂向前，两只手臂向侧，两只手臂向后。两个侧臂周期性地向前移动，之后盘和其余的臂在它们的帮助下移动。在该方法中，节段的屈曲和伸展波沿侧臂沿着传播。第二，通过用前臂拉用前臂推的位移，第三，通过步带脚的步进运动的运动。这三种运动方法可以单独使用，也可以相互结合使用。步带足也提供了活动臂和支撑面之间的联系，蛇类可以通过它向前移动。
Motion pictures were taken of the locomotion of two species of ophiurans living in the Sea of Japan:Ophiura sarsi vadicoa Djakonov andAmphipholis kochii Lutken.Ophiura sarsi was found to move with the aid of paddling movements of two pairs of arms: The fifth arm (passive) pointed backward. Ophiurans of this species do not use their ambulacral feet. Three main types of locomotor movements were distinguished inAmphipholis kochii, First, locomotion by the "breast stroke" method, in which one arm (the leading) points forward, two point to the side, and two backward. The two side arms are periodically carried forward, after which the disk and the remaining arms are moved with their aid. In this method waves of flexion and extension of the segments spread along the side arms. Second, displacement by pulling with the leading arm pushing with the hind arms, and third, movement by stepping movements of the ambulacral feet. These three methods of locomotion can be used either independently or in various combinations with each other. The ambulacral feet also provide the link between the active arms and the supporting surface by means of which the ophiurans can move forward.