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Diversity and Plasticity of Sex Determination and Differentiation in Fishes

Kobayashi, Y., Nagahama, Y., Nakamura, M.·2013·Sexual Development

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.

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Metadata

Authors
Kobayashi, Y., Nagahama, Y., & Nakamura, M.
Venue
Sexual Development
Publisher
S. Karger AG
Published
2012-08-31
Volume
7
Issue
1-3
Pages
115-125
ISSN
  • 1661-5425 (ISSN-L)
  • 1661-5433
OpenAlex
W2022651712
Cited by
292
References
1
FWCI
7.14
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Diversity and Plasticity of Sex Determination and Differentiation in Fishes. https://app.cochat.ai/papers/10.1159/000342009
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Kobayashi, Y., Nagahama, Y., & Nakamura, M. (2013). Diversity and Plasticity of Sex Determination and Differentiation in Fishes. Sexual Development. https://doi.org/10.1159/000342009

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