Development of mandibular, hyoid and hypobranchial muscles in the zebrafish: homologies and evolution of these muscles within bony fishes and tetrapods.
Development of mandibular, hyoid and hypobranchial muscles in the zebrafish: homologies and evolution of these muscles within bony fishes and tetrapods.
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DOI：
10.1186/1471-213x-8-24
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发表时间：
2008-02-28
影响因子：
--
通讯作者：
Hughes SM
中科院分区：
文献类型：
--
作者：
Diogo R;Hinits Y;Hughes SM
在脊椎动物头部进化的过程中，肌肉的变化伴随着骨骼的彻底改变。最近的研究表明，肌肉和它们的神经支配的发展速度低于软骨。淡水硬骨鱼科斑马鱼（Danio rerio）是研究最多的辐射翼类模式生物，有时被认为是硬骨鱼科的一个整体，包括硬骨鱼和四足动物。大多数关于斑马鱼颅肌的工作都集中在幼体阶段。我们开始描述斑马鱼头部肌肉的后期发育，并比较硬骨鱼类的肌肉同源性。我们描述了一种新的肌肉，并表明在四天大的斑马鱼幼虫中发现的下颌肌、舌骨肌和下鳃肌的数量与成年鱼相似。然而，这些肌肉的整体配置和/或分区的数量在发育过程中发生变化。例如，早期幼虫的未分裂的下颌收肌产生了下颌收肌A0，A1-OST，A2和Aω段，而舌骨延长肌在成年时分为背侧和腹侧部分。斑马鱼的这些肌肉的个体发育与硬骨鱼类的进化之间并不总是对应的。成年斑马鱼的所有13块下颌肌、舌骨肌和下鳃肌都存在于至少一些其他的硬骨鱼类中，除了舌骨延长肌之外，所有的肌肉都存在于至少一些现存的非硬骨鱼类的放线鱼中。在这些肌肉中，大约四分之一（下颌间前肌、下颌收肌、胸舌骨肌）存在于至少一些现存的四足动物中，另外四分之一（腭弓提肌、腭弓收肌、盖收肌）存在于至少一些现存的Sarcopterygian鱼类中。虽然斑马鱼占据了一个相当派生的系统发育的位置内放线菌，甚至在硬骨鱼，相对于下颌骨，舌骨和下鳃肌，它似乎有理由认为它是这两个群体的适当代表。在这些肌肉中，三个明确的同源物在四足动物和另外三个确定的sarcopterygian鱼是特别合适的比较结果之间的actinopterygian斑马鱼和sarcopterygian。
During vertebrate head evolution, muscle changes accompanied radical modification of the skeleton. Recent studies have suggested that muscles and their innervation evolve less rapidly than cartilage. The freshwater teleostean zebrafish (Danio rerio) is the most studied actinopterygian model organism, and is sometimes taken to represent osteichthyans as a whole, which include bony fishes and tetrapods. Most work concerning zebrafish cranial muscles has focused on larval stages. We set out to describe the later development of zebrafish head muscles and compare muscle homologies across the Osteichthyes. We describe one new muscle and show that the number of mandibular, hyoid and hypobranchial muscles found in four day-old zebrafish larvae is similar to that found in the adult. However, the overall configuration and/or the number of divisions of these muscles change during development. For example, the undivided adductor mandibulae of early larvae gives rise to the adductor mandibulae sections A0, A1-OST, A2 and Aω, and the protractor hyoideus becomes divided into dorsal and ventral portions in adults. There is not always a correspondence between the ontogeny of these muscles in the zebrafish and their evolution within the Osteichthyes. All of the 13 mandibular, hyoid and hypobranchial muscles present in the adult zebrafish are found in at least some other living teleosts, and all except the protractor hyoideus are found in at least some extant non-teleost actinopterygians. Of these muscles, about a quarter (intermandibularis anterior, adductor mandibulae, sternohyoideus) are found in at least some living tetrapods, and a further quarter (levator arcus palatini, adductor arcus palatini, adductor operculi) in at least some extant sarcopterygian fish. Although the zebrafish occupies a rather derived phylogenetic position within actinopterygians and even within teleosts, with respect to the mandibular, hyoid and hypobranchial muscles it seems justified to consider it an appropriate representative of these two groups. Among these muscles, the three with clear homologues in tetrapods and the further three identified in sarcopterygian fish are particularly appropriate for comparisons of results between the actinopterygian zebrafish and the sarcopterygians.