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the claim

Sequential hermaphroditism in wrasse provides evolutionary advantages for reproductive success

the verdict

SUPPORTED

the evidence backs this

Recorded sources

5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that Sequential hermaphroditism in wrasse provides evolutionary advantages for reproductive success?

Yes. Evidence across multiple evolutionary and biological studies confirms that sequential hermaphroditism in wrasses and related fish provides distinct reproductive and fitness advantages, particularly in accordance with the size-advantage model.

Verdict: SUPPORTED · 5 sources for, 0 against · Last checked 5 Aug 2026

The analysis

The retrieved papers consistently support the claim that sequential hermaphroditism provides evolutionary advantages related to reproductive success. Papers 7 and 9 directly discuss how sex change increases fitness and aligns with the size-advantage model, while papers 0, 1, and 2 provide foundational molecular, behavioral, and histological evidence of this life-history strategy in wrasses and related teleost fishes. There are no refuting papers.

Evidence for · 5

Large-scale transcriptome sequencing reveals novel expression patterns for key sex-related genes in a sex-changing fish.

2015

This study examines the molecular mechanisms and gene expression underlying protogynous sex change in bluehead wrasses.

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H, L., MS, L., K, R., MA, B., JR, G., & NJ, G. (2015). Large-scale transcriptome sequencing reveals novel expression patterns for key sex-related genes in a sex-changing fish.. doi.org. https://doi.org/10.1186/s13293-015-0044-8

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More for · 4

Sexual conflict in hermaphrodites.

2014

This paper discusses conflicts over the timing of sex change and how sequential hermaphroditism functions as an evolutionary reproductive strategy.

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L, S., T, J., & SA, R. (2014). Sexual conflict in hermaphrodites.. doi.org. https://doi.org/10.1101/cshperspect.a017673

Sex differentiation and gonadal development in the diandric, protogynous wrasse, <i>Thalassoma bifasciatum</i> (Pisces, Labridae)

1993

This study provides histological evidence of diandric, protogynous development in wrasses, confirming the biological basis of sex-changing life histories.

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Shapiro, D. Y. & Rasotto, M. B. (1993). Sex differentiation and gonadal development in the diandric, protogynous wrasse, <i>Thalassoma bifasciatum</i> (Pisces, Labridae). doi.org. https://doi.org/10.1111/j.1469-7998.1993.tb02685.x

Ecological and evolutionary consequences of alternative sex-change pathways in fish.

2017

This research demonstrates that sequentially hermaphroditic fish increase fitness by changing sex to become highly fecund females or large dominant males.

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C, B., I, C., J, C., M, S., & S, M. (2017). Ecological and evolutionary consequences of alternative sex-change pathways in fish.. doi.org. https://doi.org/10.1038/s41598-017-09298-8

A phylogenetic comparative analysis on the evolution of sequential hermaphroditism in seabreams (Teleostei: Sparidae)

2020

This study confirms that the size-advantage model applies to sequential hermaphroditism where selection favors sex change based on reproductive success at larger body sizes.

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Pla, S., Benvenuto, C., Capellini, I., & Piferrer, F. (2020). A phylogenetic comparative analysis on the evolution of sequential hermaphroditism in seabreams (Teleostei: Sparidae). doi.org. https://doi.org/10.1038/s41598-020-60376-w

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first checked05 Aug 2026

judged → SUPPORTED · 8705 Aug 2026

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