ArticleCommunications biology2024
A cyclical switch of gametogenic pathways in hybrids depends on the ploidy level.
Article in Communications biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 17 citations in OpenAlex.
- Sorghum embryos undergoing B chromosome elimination express B-variants of mitotic-related genes.Genome biology · 2025Article
- Clariid catfish hybridization in aquaculture: a comprehensive review of strategies, challenges, and future directions.Genes & genomics · 2025Review
- Article
- Natural repeated backcrosses lead to triploidy and tetraploidy in parthenogenetic butterfly lizards (Leiolepis: Agamidae).Scientific reports · 2025Article
- Lampbrush chromosomes of Danio rerio.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2025Article
- Sustainable Ecosystem Management Strategies for Tackling the Invasion of Blackchin Tilapia (Animals : an open access journal from MDPI · 2024Review
- Gradual chromosomal lagging drive programmed genome elimination in hemiclonal fishes from the genus Hypseleotris.Scientific reports · 2024Article
- Premeiotic endoreplication is the mechanism of obligate parthenogenesis in rock lizards of the genusBiology letters · 2024Article
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Authors and funding
7 authors at 3 institutions in 3 countries.
Funding
Abstract
The cellular and molecular mechanisms governing sexual reproduction are conserved across eukaryotes. Nevertheless, hybridization can disrupt these mechanisms, leading to asexual reproduction, often accompanied by polyploidy. In this study, we investigate how ploidy level and ratio of parental genomes in hybrids affect their reproductive mode. We analyze the gametogenesis of sexual species and their diploid and triploid hybrids from the freshwater fish family Cobitidae, using newly developed cytogenetic markers. We find that diploid hybrid females possess oogonia and oocytes with original (diploid) and duplicated (tetraploid) ploidy. Diploid oocytes cannot progress beyond pachytene due to aberrant pairing. However, tetraploid oocytes, which emerge after premeiotic genome endoreplication, exhibit normal pairing and result in diploid gametes. Triploid hybrid females possess diploid, triploid, and haploid oogonia and oocytes. Triploid and haploid oocytes cannot progress beyond pachytene checkpoint due to aberrant chromosome pairing, while diploid oocytes have normal pairing in meiosis, resulting in haploid gametes. Diploid oocytes emerge after premeiotic elimination of a single-copied genome. Triploid hybrid males are sterile due to aberrant pairing and the failure of chromosomal segregation during meiotic divisions. Thus, changes in ploidy and genome dosage may lead to cyclical alteration of gametogenic pathways in hybrids.
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