Hybridization of Russian Sturgeon (Acipenser gueldenstaedtii, Brandt and Ratzeberg, 1833) and American Paddlefish (Polyodon spathula, Walbaum 1792) and Evaluation of Their Progeny

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dc.contributor.authorKáldy, Jenő
dc.contributor.authorMozsár, Attila
dc.contributor.authorFazekas, Gyöngyvér
dc.contributor.authorFarkas, Móni
dc.contributor.authorFazekas, Dorottya Lilla
dc.contributor.authorFazekas, Georgina Lea
dc.contributor.authorGoda, Katalin
dc.contributor.authorGyöngy, Zsuzsanna
dc.contributor.authorKovács, Balázs
dc.contributor.authorSemmens, Kenneth
dc.contributor.authorBercsényi, Miklós
dc.contributor.authorMolnár, Mariann
dc.contributor.authorPatakiné Várkonyi, Eszter
dc.contributor.statusPhD hallgatóhu_HU
dc.contributor.statusegyetemi oktató, kutatóhu_HU
dc.coverage.temporal2020.04.30.hu_HU
dc.date.accessioned2021-05-21T07:55:27Z
dc.date.available2021-05-21T07:55:27Z
dc.description.abstractTwo species from the families Acipenseridae and Polyodontidae, Russian sturgeon (Acipenser gueldenstaedtii, Brandt and Ratzeberg, 1833; functional tetraploid) and American paddlefish (Polyodon spathula, Walbaum 1792, functional diploid) were hybridized. The hybridization was repeated using eggs from three sturgeon and sperm from four paddlefish individuals. Survival in all hybrid family groups ranged from 62% to 74% 30 days after hatching. This was the first successful hybridization between these two species and between members of the family Acipenseridae and Polyodontidae. Flow cytometry and chromosome analysis revealed two ploidy levels in hybrids. The chromosome numbers of the hybrids ranged between 156–184 and 300–310, in “functional” triploids and “functional” pentaploids, respectively. The hybrid origin and the ploidy levels were also confirmed by microsatellite analyses. In hybrids, the size and the number of dorsal and ventral scutes correlated with the ploidy levels as well as with the calculated ratio of the maternal and paternal chromosome sets. An extra haploid cell lineage was found in three hybrid individuals irrespective of the ploidy level, suggesting polyspermy. Although the growth performance showed high variance in hybrids (mean: 1.2 kg, SD: 0.55), many individuals reached a size of approximately 1 kg by the age of one year under intensive rearing conditions.hu_HU
dc.format.extent17hu_HU
dc.identifier.urihttp://hdl.handle.net/2437/310112
dc.language.isoenhu_HU
dc.subjectploidy levelhu_HU
dc.subjectmorphology
dc.subjectchromosome number
dc.subjectpaternal haploid cell lineage
dc.subjectsturgeon
dc.subject.disciplinetudományterületek::állattenyésztési tudományokhu_HU
dc.titleHybridization of Russian Sturgeon (Acipenser gueldenstaedtii, Brandt and Ratzeberg, 1833) and American Paddlefish (Polyodon spathula, Walbaum 1792) and Evaluation of Their Progenyhu_HU
dc.typeidegen nyelvű peer review publikációhu_HU
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