Evidence map›Paper›PMID 29207942›Full record

ArticleBMC evolutionary biology2017

A reconstruction of sexual modes throughout animal evolution.

Daniel A Sasson, Joseph F Ryan

Abstract read
In one paragraph

Article in BMC evolutionary biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Sex Determination in Sponges.Molecular reproduction and development · 2026
    Review
  2. Article
  3. Review
  4. Review
  5. The evolution of reproduction in Ediacaran-Cambrian metazoans.Biological reviews of the Cambridge Philosophical Society · 2025
    Article
  6. Article
  7. Article
  8. Seasonal environmental change and sex change in a cnidarian.Proceedings. Biological sciences · 2025
    Article
  9. Article
  10. Article
  11. Hermaphroditic origins of anisogamy.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Article
  12. Article
  13. Article
  14. Sex determination and sex chromosome evolution in land plants.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Daniel A SassonWhitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St. Augustine, FL, USA.
Joseph F RyanWhitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St. Augustine, FL, USA. joseph.ryan@whitney.ufl.edu.

Funding

University of Florida DSP Research Strategic Initiatives 00114464University of Florida Office of Provost Programs 4600
6 · The paper itself

Abstract

backgroundAlthough most extant animals have separate sexes, simultaneous hermaphrodites can be found in lineages throughout the animal kingdom. However, the sexual modes of key ancestral nodes including the last common ancestor (LCA) of all animals remain unclear. Without these data, it is difficult to infer the reproductive-state transitions that occurred early in animal evolution, and thus a broad understanding of the evolution of animal reproduction remains elusive. In this study, we use a composite phylogeny from four previously published studies, two alternative topologies (ctenophores or sponges as sister to the rest of animals), and multiple phylogenetic approaches to conduct the most extensive analysis to date of the evolution of animal sexual modes.

resultsOur analyses clarify the sexual mode of many ancestral animal nodes and allow for sound inferences of modal transitions that have occurred in animal history. Our results also indicate that the transition from separate sexes to hermaphroditism has been more common in animal history than the reverse.

conclusionsThese results provide the most complete view of the evolution of animal sexual modes to date and provide a framework for future inquiries into the correlation of these transitions with genes, behaviors, and physiology. These results also suggest that mutations promoting hermaphroditism have historically been more likely to invade gonochoristic populations than vice versa.

Indexed as

Biological EvolutionSexual Behavior, AnimalAnimalsPhylogenyReproducibility of ResultsReproductionStochastic ProcessesAncestral state reconstructionGonochorismHermaphroditismReproductionSexual mode

Identifiers

PMID29207942
PMCPMC5717846

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.