Ventral adhesive area in the limbs of walking cuttlefish (paintpot cuttlefish, Ascarosepion tullbergi): An adaptation for stable aquatic locomotion

IF 1.1 4区 生物学 Q4 ANATOMY & MORPHOLOGY
Acta Zoologica Pub Date : 2023-12-21 DOI:10.1111/azo.12491
Ayano Omura, Haruka Takano, Taketeru Tomita, Tetsuo Yamaguchi, Shin-ichiro Oka
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Abstract

Walking is a locomotion mode in which animals move over the ground using their appendages. Walking is observed in both terrestrial and aquatic animals, but the morphology and diversity of appendages in the latter group have been less extensively studied. The present paper reports on the “adhesive areas,” which may represent morphological and physiological adaptations for stable aquatic walking, in the paintpot cuttlefish, Ascarosepion tullbergi. This animal employs arm IV as a forelimb and an ambulatory flap as a hindlimb for walking, resulting in a gait-like manner of movement. The structure of the adhesive area is exclusively located on the ventral skin surface of arm IV and the ambulatory flap, which are in contact with the ground during walking. The “adhesive areas” are characterized by a dense population of adhesive mucus-secreting cells and the development of numerous wrinkles on the surface. These features may enhance the gripping and sticking capacity of the ground-contact area, thus improving walking stability. The use of adhesive areas for walking is a unique feature of A. tullbergi, as other cuttlefish with adhesive areas primarily use them for attaching to substrata in strong currents. Our results contribute to the understanding of the locomotion strategy of cuttlefish.

步行墨鱼(漆锅墨鱼,Ascarosepion tullbergi)四肢的腹侧粘着区:适应稳定的水生运动
行走是动物利用附肢在地面上移动的一种运动模式。陆生动物和水生动物都有步行现象,但对水生动物的附肢形态和多样性的研究较少。本文报告了漆壶墨鱼(Ascarosepion tullbergi)的 "粘着区",它可能代表了稳定水生行走的形态和生理适应。这种动物利用第四臂作为前肢,利用活动瓣作为后肢进行行走,从而形成类似步态的运动方式。粘着区的结构仅位于第四臂和活动瓣的腹侧皮肤表面,行走时与地面接触。粘着区 "的特点是分泌粘液的粘着细胞密集,表面有许多皱纹。这些特征可以增强与地面接触区域的抓握和粘附能力,从而提高行走的稳定性。利用粘着区行走是图尔贝里墨鱼的一个独特特征,因为其他具有粘着区的墨鱼主要利用它们在强水流中附着在底层上。我们的研究结果有助于了解墨鱼的运动策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Acta Zoologica
Acta Zoologica 生物-动物学
CiteScore
2.90
自引率
8.30%
发文量
35
审稿时长
>12 weeks
期刊介绍: Published regularly since 1920, Acta Zoologica has retained its position as one of the world''s leading journals in the field of animal organization, development, structure and function. Each issue publishes original research of interest to zoologists and physiologists worldwide, in the field of animal structure (from the cellular to the organismic level) and development with emphasis on functional, comparative and phylogenetic aspects. Occasional review articles are also published, as well as book reviews.
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