Department of Anatomy, Howard University College of Medicine, 520 W Street NW, 20059, Washington, DC, USA.
Koltzov Institute of Developmental Biology, Russian Academy of Sciences, ul. Vavilova 26, 119334, Moskva, Russia.
Sci Rep. 2018 Sep 21;8(1):14187. doi: 10.1038/s41598-018-32567-z.
The model organism Dario rerio (zebrafish) is widely used in evo-devo and comparative studies. Nevertheless, little is known about the development and differentiation of the appendicular musculature in this fish. In this study, we examined the development of the muscles of all five zebrafish fin types (pectoral, pelvic, anal, dorsal and caudal). We describe the development of the muscles of these fins, including some muscles that were never mentioned in the literature, such as the interhypurales of the caudal fin. Interestingly, these caudal muscles are present in early stages but absent in adult zebrafishes. We also compare various stages of zebrafish fin muscle development with the configuration found in other extant fishes, including non-teleostean actinopterygians as well as cartilaginous fishes. The present work thus provides a basis for future developmental, comparative, evolutionary and evo-devo studies and emphasizes the importance of developmental works on muscles for a more comprehensive understanding of the origin, development and evolution of the appendicular appendages of vertebrate animals.
模式生物斑马鱼(zebrafish)广泛应用于进化发育生物学和比较研究。然而,人们对这种鱼类附肢肌肉的发育和分化知之甚少。在这项研究中,我们检查了所有五种斑马鱼鳍类型(胸鳍、腹鳍、臀鳍、背鳍和尾鳍)的肌肉发育。我们描述了这些鳍的肌肉发育,包括一些在文献中从未提到过的肌肉,如尾鳍的间Hypurale。有趣的是,这些尾鳍肌肉在早期阶段存在,但在成年斑马鱼中不存在。我们还将斑马鱼鳍肌肉发育的各个阶段与其他现存鱼类的结构进行了比较,包括非硬骨鱼纲的肉鳍鱼和软骨鱼。本研究为未来的发育、比较、进化和进化发育研究提供了基础,并强调了对肌肉发育的研究对于更全面地理解脊椎动物附肢的起源、发育和进化的重要性。
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