期刊
DEVELOPMENTAL DYNAMICS
卷 252, 期 5, 页码 553-588出版社
WILEY
DOI: 10.1002/dvdy.551
关键词
bone; cartilage; development; morphology; pipefish; seahorse; teleost
This study provides a comprehensive description of the development of three syngnathid fish species and explores the origins and evolution of their body morphology. The results suggest that the convergent phenotypes in pipefishes and seahorses may have different ontogenetic means, and the characteristic features of seahorse body plan could result from developmental truncation.
BackgroundSyngnathids are a highly derived and diverse fish clade comprising the pipefishes, pipe-horses, and seahorses. They are characterized by a plethora of iconic traits that increasingly capture the attention of biologists, including geneticists, ecologists, and developmental biologists. The current understanding of the origins of their derived body plan is, however, hampered by incomplete and limited descriptions of the early syngnathid ontogeny. ResultsWe provide a comprehensive description of the development of Nerophis ophidion, Syngnathus typhle, and Hippocampus erectus from early cleavage stages to release from the male brooding organ and beyond, including juvenile development. We comparatively describe skeletogenesis with a particular focus on dermal bony plates, the snout-like jaw morphology, and appendages. ConclusionsThis most comprehensive and detailed account of syngnathid development to date suggests that convergent phenotypes (e.g., reduction and loss of the caudal fins), likely arose by distinct ontogenetic means in pipefishes and seahorses. Comparison of the ontogenetic trajectories of S. typhle and H. erectus provides indications that characteristic features of the seahorse body plan result from developmental truncation. Altogether, this work provides a valuable resource and framework for future research to understand the evolution of the outlandish syngnathid morphology from a developmental perspective.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据