A Quantitative and Comparative Analysis of the Muscle Architecture of the Forelimb Myology of Diurnal Birds of Prey (Order Accipitriformes and Falconiformes)
A Quantitative and Comparative Analysis of the Muscle Architecture of the Forelimb Myology of Diurnal Birds of Prey (Order Accipitriformes and Falconiformes)
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DOI：
10.1002/ar.24195
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发表时间：
2019-10-01
影响因子：
2
通讯作者：
Sellers, William, I
中科院分区：
文献类型：
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作者：
Bribiesca-Contreras, Fernanda;Parslew, Ben;Sellers, William, I
飞行是鸟类进化过程中的一个重要特征。翅膀解剖学反映了鸟类生物学的许多方面，如飞行能力。然而，我们对飞行肌肉组织的了解仍然有许多空白，特别是远端翅膀。因此，这项工作的目的是调查的形式功能关系的前肢肌的鸟类，了解个别肌肉在飞行过程中的作用。对六种猛禽进行了解剖，以收集肌肉结构的数值数据，这是肌肉功能和力生成能力的主要决定因素。猛禽是一个高度多样化的群体，在整个类群中呈现出不同的飞行风格，使它们成为我们研究的一个很好的模型。翅膀肌肉质量（MM）与体重（1.035）等比例缩放，肌肉长度为MM 0.343，束长（FL）异速生长缩放为MM 0.285。肩部肌肉组织的比例与其他区域不同，其中FL的增加速度比几何相似动物的预期速度慢，这影响了飞行力学。MM从近端到远端减小，这有助于在飞行过程中最小化机翼的惯性矩，同时允许对远端机翼进行精确控制。有趣的是，MM的分布似乎具有种属特异性，表明存在功能信号。本研究提供了鸟类翅膀肌肉结构的数值信息，有助于我们了解肌肉功能及其在飞行中的意义，并可用于未来的飞行力学研究。Anat Rec，302：1808-1823，2019。(c)2019年美国解剖学协会
Flight is a key feature in the evolution of birds. Wing anatomy reflects many aspects of avian biology such as flight ability. However, our knowledge of the flight musculature has many gaps still, particularly for the distal wing. Therefore, the aim of this work was to investigate the form-function relationship of the forelimb myology of birds to understand the role of individual muscles during flight. Dissections of six species of birds of prey were performed to collect numerical data of muscle architecture, which is the primary determinant of muscle function and force-generation capacity. Birds of prey are a highly diverse group that presents different flight styles throughout the taxa, making them a good model for our purposes. Wing muscle mass (MM) isometrically scaled with body mass(1.035), muscle length to MM0.343, and fascicle length (FL) scaled allometrically to MM0.285. The shoulder musculature scaled differently than the other regions where the FL increases more slowly than would be expected in geometrically similar animals, which affects flight mechanics. A proximal-to-distal reduction of MM occurs, which helps to minimize the wing moment of inertia during flight while allowing precise control of the distal wing. Interestingly, the distribution of MM appeared to be species-specific, suggesting a functional signal. This study provides numerical information of muscle architecture of the avian wing that helps us to understand muscle function and its implication in flight, and can be used in future studies of flight mechanics. Anat Rec, 302:1808-1823, 2019. (c) 2019 American Association for Anatomy