Department of Biology, Institute of Biosciensces, Humanities and Exact Sciences, São Paulo State University "Júlio de Mesquita Filho" (UNESP), São José do Rio Preto Campus, Brazil.
Department of Biological Sciences, School of Sciences, São Paulo State University "Júlio de Mesquita Filho" (UNESP), Bauru Campus, Brazil.
Arthropod Struct Dev. 2020 Sep;58:100973. doi: 10.1016/j.asd.2020.100973. Epub 2020 Jul 31.
Little is known about the functional morphology of locomotion in prawns, and even fewer studies have succeeded in relating a specific muscular group to the movement of the body. The present study aimed to describe the morphology of the thoracoabdominal muscle system and its implications for swimming in juveniles of Macrobrachium amazonicum. Ten muscles were observed in the abdominal muscular system in juveniles of M. amazonicum. The complex arrangement of the anterior oblique muscle in association with the central muscles occupies most of the abdominal space. This muscular compound could promote a flexion movement of the abdomen for body propulsion as well as the tail movement during swimming. Morphofunctional continuity between thoracic and abdominal muscles could aid in locomotion and support the abdominal movement. Moreover, collagen plays a valuable role in connecting deep muscles not inserted in the carapace. Collagenous fascia could transmit the tension during the contraction of deep muscles for coordinated movement.
关于虾类的运动功能形态学知之甚少，成功将特定肌肉群与身体运动联系起来的研究则更少。本研究旨在描述美洲巨螯虾幼体的胸腹部肌肉系统的形态及其对游泳的影响。在 M. amazonicum 的幼体中观察到 10 块腹部肌肉系统。前斜肌与中央肌肉的复杂排列占据了腹部的大部分空间。这块肌肉复合物可以促进腹部弯曲运动，从而推动身体前进，同时在游泳时也可以推动尾巴运动。胸腹部肌肉之间的形态功能连续性有助于运动和支撑腹部运动。此外，胶原蛋白在连接未插入甲壳的深部肌肉方面发挥着重要作用。胶原筋膜可以在深部肌肉收缩时传递张力，以实现协调运动。
