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the claim
Sequential hermaphroditism in wrasse provides evolutionary advantages for reproductive success
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
5 sources for · 0 against

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.

Evidence for · 5
Large-scale transcriptome sequencing reveals novel expression patterns for key sex-related genes in a sex-changing fish.
2015 · cited by 77
This study examines the molecular mechanisms and gene expression underlying protogynous sex change in bluehead wrasses.
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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.

More for · 4
Sexual conflict in hermaphrodites.
2014 · cited by 74
This paper discusses conflicts over the timing of sex change and how sequential hermaphroditism functions as an evolutionary reproductive strategy.
Sex differentiation and gonadal development in the diandric, protogynous wrasse, <i>Thalassoma bifasciatum</i> (Pisces, Labridae)
1993 · cited by 47
This study provides histological evidence of diandric, protogynous development in wrasses, confirming the biological basis of sex-changing life histories.
Ecological and evolutionary consequences of alternative sex-change pathways in fish.
2017 · cited by 24
This research demonstrates that sequentially hermaphroditic fish increase fitness by changing sex to become highly fecund females or large dominant males.
A phylogenetic comparative analysis on the evolution of sequential hermaphroditism in seabreams (Teleostei: Sparidae)
2020 · cited by 17
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.
Everything we examined (12)
  1. Large-scale transcriptome sequencing reveals novel expression patterns for key sex-related genes in a sex-changing fish.peer-reviewedsupports
  2. Sexual conflict in hermaphrodites.peer-reviewedsupports
  3. Sex differentiation and gonadal development in the diandric, protogynous wrasse, <i>Thalassoma bifasciatum</i> (Pisces, Labridae)peer-reviewedsupports
  4. Patterns of Male Reproductive Success in Crepidula fornicata Provide New Insight for Sex Allocation and Optimal Sex Changepeer-reviewedno side takennot shown: read and judged not to bear on this claim
  5. Sex diversity in the 21st century: Concepts, frameworks, and approaches for the future of neuroendocrinology.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. Sex‐inversion of the hermaphroditic, protogynous teleost <i>Coris julis</i> L. (Labridae)peer-reviewedno side takennot shown: read and judged not to bear on this claim
  7. Sex in an Evolutionary Perspective: Just Another Reaction Norm.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. Ecological and evolutionary consequences of alternative sex-change pathways in fish.peer-reviewedsupports
  9. Sex differences in the cognitive abilities of a sex-changing fish species <i>Labroides dimidiatus</i>.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. A phylogenetic comparative analysis on the evolution of sequential hermaphroditism in seabreams (Teleostei: Sparidae)peer-reviewedsupports
  11. Sexual selection explains sex-specific growth plasticity and positive allometry for sexual size dimorphism in a reef fish.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  12. Environmental Cues and Mechanisms Underpinning Sex Change in Fish.peer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked05 Aug 2026
judged → SUPPORTED · 8705 Aug 2026
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