Evidence map›Paper›PMID 29451715›Full record

ArticleMolecular ecology2018

Transitions in sex determination and sex chromosomes across vertebrate species.

Matthew W Pennell, Judith E Mank, Catherine L Peichel

Open access · greenAbstract read
In one paragraph

Article in Molecular ecology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
18.4field-weighted citation impact, top 1% of its field
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

83 citing papers in PubMed, 170 citations in OpenAlex.

  1. Article
  2. Chromosome-specific drift under stabilizing selection generates polygenic barriers to sex chromosome turnover.Proceedings of the National Academy of Sciences of the United States of America · 2026
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23 more citing papers are in PubMed but not listed here.

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

3 authors at 3 institutions in 4 countries.

Matthew W PennellDepartment of Zoology and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, Canada.
Judith E MankDepartment of Genetics, Evolution and Environment, University College London, London, UK.
Catherine L PeichelInstitute of Ecology and Evolution, University of Bern, Bern, Switzerland.ORCID 0000-0002-7731-8944
University of Bern · CHUniversity of British Columbia · CAUppsala University · SE

Funding

Genomic causes and consequences of sexually antagonistic selectionR01GM116853 · NIGMS · UNIVERSITY OF TEXAS AT AUSTIN · PI KIRKPATRICK, MARK · 2015 to 2022
$3.5M
European Research Council 260233NIGMS NIH HHS R01 GM116853
6 · The paper itself

Abstract

Despite the prevalence of sexual reproduction across eukaryotes, there is a remarkable diversity of sex-determination mechanisms. The underlying causes of this diversity remain unclear, and it is unknown whether there are convergent trends in the directionality of turnover in sex-determination mechanisms. We used the recently assembled Tree of Sex database to assess patterns in the evolution of sex-determination systems in the remarkably diverse vertebrate clades of teleost fish, squamate reptiles and amphibians. Contrary to theoretical predictions, we find no evidence that the evolution of separate sexes is irreversible, as transitions from separate sexes to hermaphroditism occur at higher rates than the reverse in fish. We also find that transitions from environmental sex determination to genetic sex determination occur at higher rates than the reverse in both squamates and fish, suggesting that genetic sex determination is more stable. However, our data are not consistent with the hypothesis that heteromorphic sex chromosomes are an "evolutionary trap." Rather, we find similar transition rates between homomorphic and heteromorphic sex chromosomes in both fish and amphibians, and to environmental sex determination from heteromorphic vs. homomorphic sex chromosome systems in fish. Finally, we find that transitions between male and female heterogamety occur at similar rates in amphibians and squamates, while transitions to male heterogamety occur at higher rates in fish. Together, these results provide the most comprehensive view to date of the evolution of vertebrate sex determination in a phylogenetic context, providing new insight into long-standing questions about the evolution of sexual reproduction.

Indexed as

Sex Determination ProcessesAmphibiansAnimalsFemaleFishesMalePhylogenyReptilesSex Chromosomesamphibiansfishphylogenetic comparative methodssex chromosomesex determinationsquamate reptiles

Identifiers

PMID29451715
PMCPMC6095824
OpenAlexW2792387031

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.