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Genomic signatures of recombination in a natural population of the bdelloid rotifer Adineta vaga

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  • Olga A. Vakhrusheva

    (Skolkovo Institute of Science and Technology)

  • Elena A. Mnatsakanova

    (M. V. Lomonosov Moscow State University)

  • Yan R. Galimov

    (Koltzov Institute of Developmental Biology of the Russian Academy of Sciences)

  • Tatiana V. Neretina

    (M. V. Lomonosov Moscow State University
    Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute)
    M. V. Lomonosov Moscow State University)

  • Evgeny S. Gerasimov

    (M. V. Lomonosov Moscow State University
    Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute)
    Sechenov University)

  • Sergey A. Naumenko

    (Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute)
    Harvard Chan School of Public Health)

  • Svetlana G. Ozerova

    (Koltzov Institute of Developmental Biology of the Russian Academy of Sciences
    Medkvadrat)

  • Arthur O. Zalevsky

    (M. V. Lomonosov Moscow State University
    Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences)

  • Irina A. Yushenova

    (Marine Biological Laboratory)

  • Fernando Rodriguez

    (Marine Biological Laboratory)

  • Irina R. Arkhipova

    (Marine Biological Laboratory)

  • Aleksey A. Penin

    (Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute))

  • Maria D. Logacheva

    (Skolkovo Institute of Science and Technology
    Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute)
    M. V. Lomonosov Moscow State University)

  • Georgii A. Bazykin

    (Skolkovo Institute of Science and Technology
    Institute for Information Transmission Problems of the Russian Academy of Sciences (Kharkevich Institute))

  • Alexey S. Kondrashov

    (M. V. Lomonosov Moscow State University
    University of Michigan)

Abstract

Sexual reproduction is almost ubiquitous among extant eukaryotes. As most asexual lineages are short-lived, abandoning sex is commonly regarded as an evolutionary dead end. Still, putative anciently asexual lineages challenge this view. One of the most striking examples are bdelloid rotifers, microscopic freshwater invertebrates believed to have completely abandoned sexual reproduction tens of Myr ago. Here, we compare whole genomes of 11 wild-caught individuals of the bdelloid rotifer Adineta vaga and present evidence that some patterns in its genetic variation are incompatible with strict clonality and lack of genetic exchange. These patterns include genotype proportions close to Hardy-Weinberg expectations within loci, lack of linkage disequilibrium between distant loci, incongruent haplotype phylogenies across the genome, and evidence for hybridization between divergent lineages. Analysis of triallelic sites independently corroborates these findings. Our results provide evidence for interindividual genetic exchange and recombination in A. vaga, a species previously thought to be anciently asexual.

Suggested Citation

  • Olga A. Vakhrusheva & Elena A. Mnatsakanova & Yan R. Galimov & Tatiana V. Neretina & Evgeny S. Gerasimov & Sergey A. Naumenko & Svetlana G. Ozerova & Arthur O. Zalevsky & Irina A. Yushenova & Fernando, 2020. "Genomic signatures of recombination in a natural population of the bdelloid rotifer Adineta vaga," Nature Communications, Nature, vol. 11(1), pages 1-17, December.
  • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19614-y
    DOI: 10.1038/s41467-020-19614-y
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    Cited by:

    1. Fernando Rodriguez & Irina A. Yushenova & Daniel DiCorpo & Irina R. Arkhipova, 2022. "Bacterial N4-methylcytosine as an epigenetic mark in eukaryotic DNA," Nature Communications, Nature, vol. 13(1), pages 1-17, December.
    2. Reuben W. Nowell & Fernando Rodriguez & Bette J. Hecox-Lea & David B. Mark Welch & Irina R. Arkhipova & Timothy G. Barraclough & Christopher G. Wilson, 2024. "Bdelloid rotifers deploy horizontally acquired biosynthetic genes against a fungal pathogen," Nature Communications, Nature, vol. 15(1), pages 1-17, December.

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