Reviews in Fish Biology and Fisheries

, Volume 14, Issue 4, pp 481–499

Sex-change and gonadal steroids in sequentially-hermaphroditic teleost fish

Article

Abstract

Sex-change is an intriguing phenomenon that is common among certain groups of teleost fishes. The process itself has a number of independent origins, although in each case it is initiated and (or) regulated by gonadal steroids. Despite the commercial importance of sex-change technology to fish culturists, our understanding of the relationship between steroids and sex-change is, at best, rudimentary. In this paper I review the current state of knowledge concerning (a) which steroids are involved, (b) how such steroids mediate sex-change, and (c) how steroidogenesis is regulated during gonadal transition. I conclude that the steroidal endocrinology of sex-change is multifarious and species specific – a result which challenges the relative stability of vertebrate endocrine axes, but one which probably reflects the independent evolution of this adaptation.

Keywords

endocrine regulation gonadal steroids sequential hermaphrodite sex-change teleost fish 

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Copyright information

© Springer 2005

Authors and Affiliations

  1. 1.School of Marine Biology and AquacultureJames Cook UniversityTownsvilleAustralia

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