ArticleBMC genetics2014
Fertility of a spontaneous hexaploid male Siberian sturgeon, Acipenser baerii.
Article in BMC genetics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 44 citations in OpenAlex.
- Susceptibility to metazoan parasite infection in amphimictic diploid and induced triploid tench (Frontiers in veterinary science · 2025Article
- Artificial whole genome duplication in paleopolyploid sturgeons yields highest documented chromosome number in vertebrates.Scientific reports · 2020Article
- Ploidy Levels and Fitness-Related Traits in Purebreds and Hybrids Originating from Sterlet (Genes · 2020Article
- Triploidy in zebrafish larvae: Effects on gene expression, cell size and cell number, growth, development and swimming performance.PloS one · 2020Article
- Hybrid between Danio rerio female and Danio nigrofasciatus male produces aneuploid sperm with limited fertilization capacity.PloS one · 2020Article
- A newly developed cloning technique in sturgeons; an important step towards recovering endangered species.Scientific reports · 2019Article
- Elimination of primordial germ cells in sturgeon embryos by ultraviolet irradiation.Biology of reproduction · 2018Article
- Molecular cytogenetic differentiation of paralogs of Hox paralogs in duplicated and re-diploidized genome of the North American paddlefish (Polyodon spathula).BMC genetics · 2017Article
- Evolutionary plasticity of acipenseriform genomes.Chromosoma · 2016Review
- The second highest chromosome count among vertebrates is observed in cultured sturgeon and is associated with genome plasticity.Genetics, selection, evolution : GSE · 2016Article
- The frequency of spontaneous triploidy in farmed Atlantic salmon produced in Norway during the period 2007-2014.BMC genetics · 2015Article
- Chromosomal manipulation in Senegalese sole (Solea senegalensis Kaup, 1858): induction of triploidy and gynogenesis.Journal of applied genetics · 2015Article
- Surrogate broodstock to enhance biotechnology research and applications in aquaculture.Biotechnology advancesReview
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Authors and funding
11 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundEvolution of sturgeons and paddlefishes (order Acipenseriformes) is inherently connected with polyploidization events which resulted in differentiation of ploidy levels and chromosome numbers of present acipenseriform species. Moreover, allopolyploidization as well as autopolyploidization seems to be an ongoing process in these fishes and individuals with abnormal ploidy levels were occasionally observed within sturgeon populations. Here, we reported occurrence of Siberian sturgeon (Acipenser baerii) male with abnormal ploidy level for this species, accessed its ploidy level and chromosome number and investigate its potential sterility or fertility in comparison with normal individuals of sterlet (A. ruthenus), Russian sturgeon (A. gueldenstaedtii) and Siberian sturgeon (A. baerii).
resultsAcipenser ruthenus possessed 120 chromosomes, exhibiting recent diploidy (2n), A. gueldenstaedtii and A. baerii had ~245 chromosomes representing recent tetraploidy (4n), and A. baerii male with abnormal ploidy level had ~ 368 chromosomes, indicating recent hexaploidy (6n). Genealogy assessed from the mtDNA control region did not reveal genome markers of other sturgeon species and this individual was supposed to originate from spontaneous 1.5 fold increment in number of chromosome sets with respect to the number most frequently found in nature for this species. Following hormone stimulation, the spontaneous hexaploid male produced normal sperm with ability for fertilization. Fertilization of A. baerii and A. gueldenstaedtii ova from normal 4n level females with sperm of the hexaploid male produced viable, non-malformed pentaploid (5n) progeny with a ploidy level intermediate to those of the parents.
conclusionThis study firstly described occurrence of hexaploid individual of A. baerii and confirmed its autopolyploid origin. In addition to that, the first detailed evidence about fertility of spontaneous hexaploid sturgeon was provided. If 1.5 fold increment in number of chromosome sets occurring in diploids, resulted triploids possess odd number of chromosome sets causing their sterility or subfertility due to interference of gametogenesis. In contrast, 1.5 fold increment in number of chromosome sets in naturally tetraploid A. baerii resulted in even number of chromosome sets and therefore in fertility of the hexaploid specimen under study.
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