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Evolution and development of the homocercal caudal fin in teleosts - PubMed

Review

doi: 10.1111/dgd.12088. Epub 2013 Sep 19.

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Review

Evolution and development of the homocercal caudal fin in teleosts

Yuuta Moriyama et al. Dev Growth Differ. 2013 Oct.

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  • Retraction.

    [No authors listed] [No authors listed] Dev Growth Differ. 2017 Feb;59(2):104. doi: 10.1111/dgd.12343. Dev Growth Differ. 2017. PMID: 28255986 No abstract available.

Abstract

The vertebrate caudal skeleton is one of the most innovative structures in vertebrate evolution and has been regarded as an excellent model for functional morphology, a discipline that relates a structure to its function. Teleosts have an internally-asymmetrical caudal fin, called the homocercal caudal fin, formed by the upward bending of the caudal-most portion of the body axis, the ural region. This homocercal type of the caudal fin ensures powerful and complex locomotion and is thought to be one of the most important evolutionary innovations for teleosts during adaptive radiation in an aquatic environment. In this review, we summarize the past and present research of fish caudal skeletons, especially focusing on the homocercal caudal fin seen in teleosts. A series of studies with a medaka spontaneous mutant have provided important insight into the evolution and development of the homocercal caudal skeleton. By comparing developmental processes in various vertebrates, we propose a scenario for acquisition and morphogenesis of the homocercal caudal skeleton during vertebrate evolution.

Keywords: caudal skeleton; evo-devo; homocercal fin; teleost; zic.

© 2013 The Authors Development, Growth & Differentiation © 2013 Japanese Society of Developmental Biologists.

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