Gonad Development in Hermaphroditic Gobies

Kathleen S. Cole

in Reproduction and Sexuality in Marine Fishes

Published by University of California Press

Published in print October 2010 | ISBN: 9780520264335
Published online March 2012 | e-ISBN: 9780520947979 | DOI:
Gonad Development in Hermaphroditic Gobies

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Among hermaphroditic goby taxa (Perciformes, Gobiidae), considerable variability in the composition and configuration of gametogenic tissue within the gonad proper is coupled with a diversity of accessory structures of the reproductive complex. Such diversity prompts the question of how gonad ontogeny and morphogenesis may have become modified to produce such an impressive array of anatomical complexity. This chapter addresses that possibility. First, it provides a brief overview of hermaphroditic gonad morphology among gobiid fishes. The chapter then explores various aspects of early cell differentiation and tissue formation associated with the ontogeny of the reproductive complex in teleosts. It also examines patterns of gonad morphology as possible clade traits in order to investigate whether hermaphroditism has multiple origins within the Gobiidae and to what extent shared patterns of gonad morphology may be predictive of phylogenetic relatedness. The chapter concludes with a discussion of how ontogenetic processes may inform our understanding of the evolution of gonad morphological diversity among hermaphroditic gobiid fishes.

Keywords: gobiid fishes; hermaphroditism; evolution; gonad morphology; teleosts; cell differentiation; ontogeny; reproductive complex; phylogenetic relatedness; tissue formation

Chapter.  16939 words.  Illustrated.

Subjects: Aquatic Biology

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