Genetic diversity of stellate sturgeon of the Ural River

Shalgimbayeva, Gulmira M.; Barmintseva, A. E.; Mugue, L. N.; Isbekov, Kuanysh Baibulatovich; Mugue, Nikolai

doi:10.36038/2307-3497-2018-171-95-105

Cited by 1 publication

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“…The source of sturgeon breeders for sturgeon artificial reproduction in Kazakhstan is the pre-estuarine space and lower reaches of the Zhaiyk River (Ural— rus ). However, since 1990, a decrease in sturgeon stocks has been noted which are represented mainly by sturgeon and single specimens of Russian Beluga Sturgeon and Fringebarbel Acipenser nudiventris (spike— rus ) [ 19 , 32 ].…”

Section: Resultsmentioning

confidence: 99%

“…In addition, imported fertilized eggs in some cases are of hybrid origin which excludes the possibility of using the breed of such individuals for stocking and release. In this regard, it is necessary to apply modern methods of genetic study and monitoring of natural Sturgeon populations and their artificial brood stocks [ 26 , 27 , 42 , 43 , 44 ]. For Kazakhstan, as a Caspian state, the solution of this issue is extremely relevant [ 28 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

“…In this regard, it is necessary to apply modern methods of genetic study and monitoring of natural Sturgeon populations and their artificial brood stocks [ 26 , 27 , 42 , 43 , 44 ]. For Kazakhstan, as a Caspian state, the solution of this issue is extremely relevant [ 28 , 44 ]. Genetic certification of spawners and genotyping of artificial juveniles are carried out/introduced at Sturgeon hatcheries in these countries [ 29 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

“…The studies of Sturgeon abnormalities at hatcheries in the Caspian Sea basin countries were conducted mainly in Russia while in other countries of the region—Iran [ 36 , 37 ], Azerbaijan [ 35 , 36 , 37 ] they were minimized; in Turkmenistan are absent. We have found some data published on the presence of the types and number of anomalies in sturgeons at Kazakhstan Sturgeon hatcheries in the available literature [ 33 , 44 ]. The availability of this information is especially relevant for the Republic of Kazakhstan, since this country has the least experience in the artificial reproduction of sturgeons due to the relatively short operating time of national Sturgeon hatcheries.…”

Section: Final Remarksmentioning

confidence: 99%

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Experience, Principles and Parameters in the Sturgeon Quality Assessment by Anomalies in Early Ontogenesis (A Review)

Assylbekova¹,

Микодина

Isbekov³

et al. 2022

Biology

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Purpose: Review the experience, principles and parameters of the sturgeon assessment quality by anomalies in early ontogeny. Results: Maintaining the number of sturgeon fish in the transboundary Caspian Sea is provided by five states (Russia, Iran, Azerbaijan, Turkmenistan, Kazakhstan) at 16 Sturgeon hatcheries, where their artificial reproduction is carried out. FAO recognizes Russia’s leadership in creating the basic technology for the sturgeon artificial reproduction, but the other four Caspian states also make a significant contribution to its modern optimizations. There is almost a century of tradition behind the technological development of artificial reproduction in sturgeons. During the artificial reproduction of sturgeons, anomalies in the structure and functions may occur, such as deformities, defects in organs and tissues, edema, hematomas, etc. The sturgeon anomalies classification is based on structural and functional principles. Identification of anomalies is carried out on the basis of a previously created classification, divided into nine large classes. Identification of sturgeon anomalies during the period of their artificial reproduction makes it possible to clarify the real value of replenishment of their stock. Methods: Analysis of professional scientific literature and practical guides. Conclusions: The presence and number of Sturgeon anomalies make it possible to determine their death percentage to calculate the real number of replenishment of the Caspian Sturgeon stock.

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Section: Resultsmentioning

confidence: 99%