Genetic polymorphism of the sterlet (Acipenser ruthenus) living in natural conditions and grown in the fish farm environment

This work is aimed at a comparative assessment of genetic polymorphism of the sterlet population inhabiting the Irtysh River (Uvatsky District, Tyumen Region) and the broodstock of the hatchery “Era” (“Epoch”) (RAS, recirculating aquaculture systems, Tyumen) based on microsatellite markers. The sterlet broodstock was comprised of the offspring from mature individuals caught in the Irtysh River and used for artificial reproduction. Polymorphism has been investigated for three primers: CR–212, CR–215, and X–9. It has been shown that the indicators of genetic diversity—polymorphism, heterozygosity, the number of active and effective alleles—change in the fish reared in the RAS environment. A decrease in the share of polymorphic markers for the primer CR–212 and in heterozygosity by 1.38 times have been recorded for the sterlet from the broodstock as compared to the sterlet from a natural population inhabiting the Irtysh River. A decrease in the number of active and effective alleles in the sterlet cultivated in the RAS environment has been discovered. The observed phenomenon may result from artificial reproduction of the fish, its prior selection, or genetic drift. This paper also provides a comparative assessment of genetic polymorphism of the stelet from the Kama and Irtysh Rivers based on the data collected by its authors and by other researchers.

Bibliographic Details

Main Authors:	Kotov, I.A., Trofimov, O.V., Pak, I.V., Shanskikh, A.I.
Format:	Journal Contribution biblioteca
Language:	Russian
Published:	2022
Subjects:	Sterlet culture, Natural populations, Artificial breeding, ISSR-PCR markers, Heterozygosity, Acipenser ruthenus, ISSR-PCR маркеры, Ремонтно-маточное стадо, УЗВ (установки замкнутого водоснабжения), ASFA_2015::G::Genetic polymorphism, ASFA_2015::B::Brood stocks, ASFA_2015::H::Hatcheries,
Online Access:	http://hdl.handle.net/1834/42490
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