八足节肢动物的前进、后退和倒立行走。

Johanna Tross, H. Wolf, Torben Stemme, S. Pfeffer
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引用次数: 3

摘要

虽然昆虫的运动已经被深入研究,但对章鱼行走行为的研究相对较少,尤其是对假蝎子的研究甚少。因此,我们进行了广泛的运动分析在前进,后退和倒立行走在世界假蝎子Chelifer cancroides。在前进运动中,我们观察到棘球蟹经常在短时间内冻结运动。这些微光点肉眼几乎看不到,持续时间为100-200毫秒。我们的运动分析表明,棘球蟹在向前和向后行走时表现出静态稳定和高度协调的交替四足步态,四足步态几乎完全倒置,但在倒立行走时没有刚性固定的腿部协调,行走速度低至每秒4个体长。在向后运动(逃跑行为)中,观察到最高速度(高达每秒17个体长),主要是通过一致的腿部协调和强烈的相移来实现的,而向前行走的特点是在一个四足动物中,两个松散耦合的腿群之间的速度较低,相移约为10%。也就是说,在一个四足动物群体的运动过程中,最后一条腿和第三条腿在摆动阶段几乎是同步的,第二条腿和第一条腿也是如此。第二对腿的特殊作用被证明,可能主要是为了稳定的原因,并与大的肢肢有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Locomotion in the pseudoscorpion Chelifer cancroides - forward, backward and upside down walking in an eight-legged arthropod.
While insect locomotion has been intensively studied, there are comparably few studies investigating octopedal walking behaviour, and very little is known about pseudoscorpions in particular. Therefore, we performed an extensive locomotion analysis during forward, backward and upside down walking in the cosmopolitan pseudoscorpion Chelifer cancroides. During forward locomotion, we observed C. cancroides to freeze locomotion frequently for short time periods. These microstops were barely visible to the naked eye with a duration of 100-200 ms. Our locomotion analysis revealed that C. cancroides performs a statically stable and highly coordinated alternating tetrapod gait during forward and backward walking, with almost complete inversion of the tetrapod schemes, but no rigidly fixed leg coordination during upside down walks with low walking speeds up to 4 body lengths per second. Highest speeds (up to 17 body lengths per second), mainly achieved by consistent leg coordination and strong phase shifts, were observed during backward locomotion (escape behaviour), while forward walking was characterised by lower speeds and phase shifts around 10% between two loosely coupled leg groups within one tetrapod. That is, during the movement of one tetrapod group, the last and the third leg are almost synchronous in their swing phases, as are the second and the first leg. A special role of the second leg pair was demonstrated, probably mainly for stability reasons and related to the large pedipalps.
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