Diversity and plasticity of sex determination and differentiation in fishes.

Y. Kobayashi, Y. Nagahama, M. Nakamura

Research output: Contribution to journalArticle

88 Citations (Scopus)

Abstract

Among vertebrates, fishes show an exceptional range of reproductive strategies regarding the expression of their sexuality. Fish sexualities were categorized into gonochorism, synchronous/sequential hermaphrodite, or unisexual reproduction. In gonochoristic fishes, sex is determined genetically or by environmental factors. After sex determination, the gonads are differentiated into ovary or testis, with the sex remaining fixed for the entire life cycle. In contrast, some sequential hermaphrodite fishes can change their sex from male to female (protandrous), female to male (protogynous), or serially (bi-directional sex change) in their life cycle. In many cases, sex change is cued by social factors such as the disappearance of a male or female from a group. This unique diversity in fishes provides an ideal animal model to investigate sex determination and differentiation in vertebrates. This review first discusses genetic-orientated sex determination mechanisms. Then, we address the gonadal sex differentiation process in a gonochoristic fish, using an example of the Nile tilapia. Finally, we discuss various types of sex change that occur in hermaphrodite fishes.

Original languageEnglish
Pages (from-to)115-125
Number of pages11
JournalSexual Development
Volume7
Issue number1-3
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

Sex Differentiation
Fishes
Sexuality
Life Cycle Stages
Vertebrates
Sex Determination Processes
Cichlids
Gonads
Reproduction
Testis
Ovary
Animal Models

Keywords

  • Gobiid fish
  • Gonadal sex differentiation
  • Sex change
  • Sex determination
  • Tilapia
  • Wrasse

ASJC Scopus subject areas

  • Developmental Biology
  • Embryology
  • Endocrinology, Diabetes and Metabolism

Cite this

Diversity and plasticity of sex determination and differentiation in fishes. / Kobayashi, Y.; Nagahama, Y.; Nakamura, M.

In: Sexual Development, Vol. 7, No. 1-3, 2013, p. 115-125.

Research output: Contribution to journalArticle

Kobayashi, Y. ; Nagahama, Y. ; Nakamura, M. / Diversity and plasticity of sex determination and differentiation in fishes. In: Sexual Development. 2013 ; Vol. 7, No. 1-3. pp. 115-125.
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