ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2018
Clonal reproduction assured by sister chromosome pairing in dojo loach, a teleost fish.
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 29 citations in OpenAlex.
- Genomic insights into evolution of parthenogenesis and triploidy in the flowerpot snake.Science advances · 2025Article
- A cyclical switch of gametogenic pathways in hybrids depends on the ploidy level.Communications biology · 2024Article
- Meiotic deviations and endoreplication lead to diploid oocytes in female hybrids between bighead catfish (Frontiers in cell and developmental biology · 2024Article
- Sperm-dependent asexual species and their role in ecology and evolution.Ecology and evolution · 2023Review
- Challenges and Costs of Asexuality: Variation in Premeiotic Genome Duplication in Gynogenetic Hybrids fromInternational journal of molecular sciences · 2021Article
- Sex chromosomes in meiotic, hemiclonal, clonal and polyploid hybrid vertebrates: along the 'extended speciation continuum'.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Review
- Parthenogenesis as a Solution to Hybrid Sterility: The Mechanistic Basis of Meiotic Distortions in Clonal and Sterile Hybrids.Genetics · 2020Article
- Using asexual vertebrates to study genome evolution and animal physiology: Banded (Evolutionary applications · 2020Article
- Hybrid between Danio rerio female and Danio nigrofasciatus male produces aneuploid sperm with limited fertilization capacity.PloS one · 2020Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Wild-type dojo loach (Misgurnus anguillicaudatus) commonly reproduces bisexually as a gonochoristic diploid (2n = 50), but gynogenetically reproducing clonal diploid lines (2n = 50) exist in certain districts in Japan. Clones have been considered to develop from past hybridization event(s) between two genetically diverse groups, A and B, within the species. Fluorescence in situ hybridization analyses using the repetitive sequence "ManDra" as a probe clearly distinguished 25 chromosomes derived from group B out of a total of 50 diploid chromosomes of the clone, providing strong molecular cytogenetic evidence of its hybrid origin. In meiosis, diploid wild-type showed 25 bivalents, while diploid clones revealed 50 bivalents, indicating the presence of 100 chromosomes. In meiotic chromosome spreads in sex-reversed clonal males, ManDra signals were detected in 25 out of 50 bivalents, and only one out of two bivalents possessing major ribosomal RNA coding regions exhibited two positive ManDra signals. In clonal females, ManDra signals were detected in approximately 25 out of 50 bivalents. Thus, unreduced gametes should be generated by the pairing between sister chromosomes doubled from each ancestral chromosome from the different groups by premeiotic endomitosis. Sister chromosome pairing should assure production of unreduced isogenic clonal gametes due to the absence of the influence of recombination or crossing over.
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