Variability and conservation in late chondrichthyan development:: Ontogeny of the winter skate (Leucoraja ocellata)
Variability and conservation in late chondrichthyan development:: Ontogeny of the winter skate (Leucoraja ocellata)
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DOI：
10.1002/ar.20719
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发表时间：
2008-09-01
影响因子：
2
通讯作者：
Heppleston, Audrey C.
中科院分区：
文献类型：
--
作者：
Maxwell, Erin E.;Froebisch, Nadia B.;Heppleston, Audrey C.
描述了西北大西洋鳐鱼 Leucoraja ocellata 的个体发育，特别关注鳐鱼特定形态的发育和鳍的发育。结果表明，在鳐鱼、全头动物和鲨鱼中，涉及成对鳍的早期生长和咽部区域的最初发育的事件顺序是非常恒定的。然而，下颌弓区域重塑的时间、鳃丝、中鳍、小齿的发育以及鳃裂形成的顺序存在差异。尽管与鳃区发育和鳍的最初生长相关的早期事件具有相似性，但后期阶段越来越多地以分类群特异性形态为特征，使得软骨鱼类的通用分期表不太适用。本研究中提出的分期表是未来蝙蝠胚胎学研究的重要资源。
The ontogeny of the northwestern Atlantic batoid, Leucoraja ocellata, is described with special focus on the development of skate specific morphologies and the development of the fins. The results show that the sequence of events involving the early outgrowth of the paired fins and the initial development of the pharyngeal region is remarkably constant in skates, holocephalians, and sharks. However, differences exist in timing of the reshaping of the mandibular arch region, development of branchial filaments, median fins, denticles, and the order of branchial cleft formation. Despite the similarities of early events related to development of the branchial region and initial outgrowth of the fins, later stages are increasingly characterized by taxon-specific morphologies making a universal staging table for chondrichthyans less applicable. The staging table presented in this study represents an important resource for future studies on batoid embryology.