Evidence map›Paper›PMID 25196892›Full record

ArticleEvolution & development

Gonad morphogenesis defects drive hybrid male sterility in asymmetric hybrid breakdown of Caenorhabditis nematodes.

Alivia Dey, Qi Jin, Yen-Chu Chen, Asher D Cutter

Open access · greenAbstract read
In one paragraph

Article in Evolution & development. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

21 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Aberrant X chromosome dosage compensation causes hybrid male inviability inProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Article
  4. Article
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  6. Five newbioRxiv : the preprint server for biology · 2025
    Article
  7. Hybrid incompatibility emerges at the one-cell stage in interspeciesbioRxiv : the preprint server for biology · 2025
    Article
  8. Article
  9. Article
  10. Nematode chromosomes.Genetics · 2022
    Review
  11. Article
  12. Article
  13. The importance of intrinsic postzygotic barriers throughout the speciation process.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020
    Review
  14. Article
  15. Article
  16. Article
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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

4 authors at 1 institution in 1 country.

Alivia DeyDepartment of Ecology & Evolutionary Biology, University of Toronto, Toronto, ON, Canada, M5S 3B2.
Qi Jin
Yen-Chu Chen
Asher D Cutter
University of Toronto · CA

Funding

Functional and population genomics of small RNA regulationR01GM096008 · NIGMS · UNIVERSITY OF OREGON · PI CUTTER, ASHER DAMON, PHILLIPS, PATRICK C. · 2011 to 2014
$1.5M
NIGMS NIH HHS R01 GM096008
6 · The paper itself

Abstract

Determining the causes and evolution of reproductive barriers to gene flow between populations, speciation, is the key to understanding the origin of diversity in nature. Many species manifest hybrid breakdown when they intercross, characterized by increasingly exacerbated problems in later generations of hybrids. Recently, Caenorhabditis nematodes have emerged as a genetic model for studying speciation, and here we investigate the nature and causes of hybrid breakdown between Caenorhabditis remanei and C. latens. We quantify partial F1 hybrid inviability and extensive F2 hybrid inviability; the ~75% F2 embryonic arrest occurs primarily during gastrulation or embryonic elongation. Moreover, F1 hybrid males exhibit Haldane's rule asymmetrically for both sterility and inviability, being strongest when C. remanei serves as maternal parent. We show that the mechanism by which sterile hybrid males are incapable of transferring sperm or a copulatory plug involves defective gonad morphogenesis, which we hypothesize results from linker cell defects in migration and/or cell death during development. This first documented case of partial hybrid male sterility in Caenorhabditis follows expectations of Darwin's corollary to Haldane's rule for asymmetric male fitness, providing a powerful foundation for molecular dissection of intrinsic reproductive barriers and divergence of genetic pathways controlling organ morphogenesis.

Indexed as

Hybridization, GeneticAnimalsCaenorhabditisFemaleGonadsMale

Identifiers

PMID25196892
PMCPMC4244252
OpenAlexW1576566824

What OpenQuestion holds

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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.