Evidence map›Paper›PMID 23873043›Full record

ArticleNature2013

Genomic evidence for ameiotic evolution in the bdelloid rotifer Adineta vaga.

Jean-François Flot, Boris Hespeels, Xiang Li, Benjamin Noel, Irina Arkhipova, Etienne G J Danchin, Andreas Hejnol, Bernard Henrissat, Romain Koszul, Jean-Marc Aury and 30 more

Open access · hybridAbstract read
PubMed Publisher
In one paragraph

Article in Nature, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 190 papers.

0numbers the graph read from it
0cells of the map it votes in
190citing papers in PubMed
17.2field-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

190 citing papers in PubMed, 406 citations in OpenAlex.

  1. Article
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  9. The eukaryotic horizontal gene transfer dataset a compendium.bioRxiv : the preprint server for biology · 2025
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  12. Review
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  15. A horizontally transferred bacterial gene aids the freezing tolerance of Antarctic bdelloid rotifers.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

130 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

40 authors at 18 institutions in 6 countries.

Jean-François FlotUniversity of Namur, Department of Biology, URBE, Laboratory of Evolutionary Genetics and Ecology, 5000 Namur, Belgium. jean-francois.flot@ds.mpg.de
Boris Hespeels
Xiang Li
Benjamin Noel
Irina Arkhipova
Etienne G J Danchin
Andreas Hejnol
Bernard Henrissat
Romain Koszul
Jean-Marc Aury
Valérie Barbe
Roxane-Marie Barthélémy
Jens Bast
Georgii A Bazykin
Olivier Chabrol
Arnaud Couloux
Martine Da Rocha
Corinne Da Silva
Eugene Gladyshev
Philippe Gouret
Oskar Hallatschek
Bette Hecox-Lea
Karine Labadie
Benjamin Lejeune
Oliver Piskurek
Julie Poulain
Fernando Rodriguez
Joseph F Ryan
Olga A Vakhrusheva
Eric Wajnberg
Bénédicte Wirth
Irina Yushenova
Manolis Kellis
Alexey S Kondrashov
David B Mark Welch
Pierre Pontarotti
Jean Weissenbach
Patrick Wincker
Olivier Jaillon
Karine Van Doninck
Marine Biological Laboratory · USCentre National de la Recherche Scientifique · FRGenoscope · FRCommissariat à l'Énergie Atomique et aux Énergies Alternatives · FRNamur Research Institute for Life SciencesAix-Marseille Université · FRLomonosov Moscow State University · RUUniversité Côte d'Azur · FRUniversity of Bergen · NOUniversity of Göttingen · DEUniversity of Namur · BEArchitecture et Fonction des Macromolécules Biologiques · FRBroad Institute · USInstitut Pasteur · FRLaboratoire de Mécanique, Modélisation & Procédés Propres · FRMax Planck Institute for Dynamics and Self-Organization · DEUniversité d'Évry Val-d'Essonne · FRUniversity of Michigan–Ann Arbor · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Loss of sexual reproduction is considered an evolutionary dead end for metazoans, but bdelloid rotifers challenge this view as they appear to have persisted asexually for millions of years. Neither male sex organs nor meiosis have ever been observed in these microscopic animals: oocytes are formed through mitotic divisions, with no reduction of chromosome number and no indication of chromosome pairing. However, current evidence does not exclude that they may engage in sex on rare, cryptic occasions. Here we report the genome of a bdelloid rotifer, Adineta vaga (Davis, 1873), and show that its structure is incompatible with conventional meiosis. At gene scale, the genome of A. vaga is tetraploid and comprises both anciently duplicated segments and less divergent allelic regions. However, in contrast to sexual species, the allelic regions are rearranged and sometimes even found on the same chromosome. Such structure does not allow meiotic pairing; instead, we find abundant evidence of gene conversion, which may limit the accumulation of deleterious mutations in the absence of meiosis. Gene families involved in resistance to oxidation, carbohydrate metabolism and defence against transposons are significantly expanded, which may explain why transposable elements cover only 3% of the assembled sequence. Furthermore, 8% of the genes are likely to be of non-metazoan origin and were probably acquired horizontally. This apparent convergence between bdelloids and prokaryotes sheds new light on the evolutionary significance of sex.

Indexed as

Biological EvolutionAnimalsGene ConversionGene Transfer, HorizontalGenomeGenomicsMeiosisModels, BiologicalReproduction, AsexualRotiferaTetraploidy

Identifiers

PMID23873043
OpenAlexW2067829962

What OpenQuestion holds

Textmetadata
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.