ArticleBMC evolutionary biology2017
Mutual maintenance of di- and triploid Pelophylax esculentus hybrids in R-E systems: results from artificial crossings experiments.
Article in BMC evolutionary biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 43 citations in OpenAlex.
- Unexpected variability of gametogenic pathways and interspecific chromosomal leakage in Pelophylax esculentus hybrids†.Biology of reproduction · 2026Article
- New insights into the molecular basis of gametogenesis in the hybridogenetic water frog Pelophylax esculentus.Scientific reports · 2026Article
- Article
- Gradual chromosomal lagging drive programmed genome elimination in hemiclonal fishes from the genus Hypseleotris.Scientific reports · 2024Article
- Inheritance patterns of male asexuality in hybrid males of a water frog Pelophylax esculentus.Scientific reports · 2024Article
- Effects of minimum Strigea robusta (Digenea: Strigeidae) cercariae doses and localization of cysts on the anomaly P manifestation in Pelophylax lessonae (Anura: Ranidae) tadpoles.Parasitology research · 2023Article
- Maintenance of pure hybridogenetic water frog populations: Genotypic variability in progeny of diploid and triploid parents.PloS one · 2022Article
- The high diversity of gametogenic pathways in amphispermic water frog hybrids from Eastern Ukraine.PeerJ · 2022Article
- Genome elimination from the germline cells in diploid and triploid male water frogsFrontiers in cell and developmental biology · 2022Article
- 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
- Uniparental Genome Elimination in Australian Carp Gudgeons.Genome biology and evolution · 2021Article
- Article
- Capture and return of sexual genomes by hybridogenetic frogs provide clonal genome enrichment in a sexual species.Scientific reports · 2021Article
- Population genomics of an exceptional hybridogenetic system of Pelophylax water frogs.BMC evolutionary biology · 2019Article
- Variation in hybridogenetic hybrid emergence between populations of water frogs from the Pelophylax esculentus complex.PloS one · 2019Article
- The programmed DNA elimination and formation of micronuclei in germ line cells of the natural hybridogenetic water frog Pelophylax esculentus.Scientific reports · 2018Article
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundInterspecies animal hybrids can employ clonal or hemiclonal reproduction modes where one or all parental genomes are transmitted to the progeny without recombination. Nevertheless, some interspecies hybrids retain strong connection with the parental species needed for successful reproduction. Appearance of polyploid hybrid animals may play an important role in the substitution of parental species and in the speciation process.
resultsTo establish the mechanisms that enable parental species, diploid and polyploid hybrids coexist we have performed artificial crossing experiments of water frogs of Pelophylax esculentus complex. We identified tadpole karyotypes and oocyte genome composition in all females involved in the crossings. The majority of diploid and triploid hybrid frogs produced oocytes with 13 bivalents leading to haploid gametes with the same genome as parental species hybrids usually coexist with. After fertilization of such gametes only diploid animals appeared. Oocytes with 26 bivalents produced by some diploid hybrid frogs lead to diploid gametes, which give rise to triploid hybrids after fertilization. In gonads of all diploid and triploid hybrid tadpoles we found DAPI-positive micronuclei (nucleus-like bodies) involved in selective genome elimination. Hybrid male and female individuals produced tadpoles with variable karyotype and ploidy even in one crossing owing to gametes with various genome composition.
conclusionsWe propose a model of diploid and triploid hybrid frog reproduction in R-E population systems. Triploid Pelophylax esculentus hybrids can transmit genome of parental species they coexist with by producing haploid gametes with the same genome composition. Triploid hybrids cannot produce triploid individuals after crossings with each other and depend on diploid hybrid females producing diploid eggs. In contrast to other population systems, the majority of diploid and triploid hybrid females unexpectedly produced gametes with the same genome as parental species hybrids coexist with.
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