Gonochorism

@article{Holub2021Gonochorism,
  title={Gonochorism},
  author={Andrew M. Holub and Todd K. Shackelford},
  journal={Encyclopedia of Animal Cognition and Behavior},
  year={2021}
}

References

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  • Biology
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A fascinating collection of six articles in this special issue on Hermaphroditism & Sex Determination impressively documents some important challenges to the understanding of sex determination, and the specification of male and female reproductive function when these need to occur within the same individual rather than in two separate individuals.

ANIMALS MIX IT UP TOO: THE DISTRIBUTION OF SELF-FERTILIZATION AMONG HERMAPHRODITIC ANIMALS

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A reconstruction of sexual modes throughout animal evolution

The results suggest that mutations promoting hermaphroditism have historically been more likely to invade gonochoristic populations than vice versa and provide a framework for future inquiries into the correlation of these transitions with genes, behaviors, and physiology.

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Diversity and Plasticity of Sex Determination and Differentiation in Fishes

This review first discusses genetic-orientated sex determination mechanisms, then addresses the gonadal sex differentiation process in a gonochoristic fish, using an example of the Nile tilapia, and discusses various types of sex change in hermaphrodite fishes.

Sexual selection favors harmful mating in hermaphrodites more than in gonochorists.

The authors' analyses indicate that hermaphrodites are more prone to be caught in costly escalations than gonochorists and discuss the implications for the evolution of gender expression in animals and plants.