Russian Federation
Russian Federation
Federal Research Centre The Southern Scientific Center of the Russian Academy of Sciences (Head of the Department of Aquatic Biological Resources of the Basins of the Southern Seas, Senior Researcher)
GRNTI 34.39 Физиология человека и животных
GRNTI 62.13 Биотехнологические процессы и аппараты
GRNTI 69.01 Общие вопросы рыбного хозяйства
GRNTI 69.25 Аквакультура. Рыбоводство
GRNTI 69.31 Промышленное рыболовство
GRNTI 69.51 Технология переработки сырья водного происхождения
GRNTI 87.19 Загрязнение и охрана вод суши, морей и океанов
Physiological state of the stellate sturgeon female species ( Acipenser stellatus ) caught in spring in the fishing area in the Lower Volga delta and the female species farmed at the Bertyulckiy and Lebyahzje sturgeon fish-factories in the Astrakhan region were evaluated by biochemical parameters of blood taken in fish after hypophysial injection. At each sturgeon fish-factories there were revealed 2 groups of fish with different biochemical status. At the Bertyulskiy sturgeon fish-factory in the first group blood values were normal, in the second group the level of serum protein, β-lipoproteids, cholesterol and hemoglobin in blood was lower by 1.5, 4.3, 1.7 and by 1.2 times, correspondingly. At the Lebyahzje sturgeon fish-factory in female species of one group the level of serum protein, β-lipoproteids and cholesterol was even lower: in 1.8, 2.5 and 2.3 times. In the group of stellate sturgeon females with a lower concentration of biochemical components in blood there was revealed excessive total bacterial contamination: at the Bertyulskiy fish-factory - in 3 times, at the Lebyahzje - in 8 times. The results obtained allow to suggest the dependency of the bacterial contamination level on physiological status of fish. Study of stellate sturgeon females caught in spring in the lower reaches of the Volga and females used for fish breeding at the sturgeon fish-factory showed that under equal physiological status the level of total contamination of fish was much higher at the fish-factory, i.e. fish in natural habitats were more resistant to infection. The comparative analysis of physiological status of stellate sturgeon males and females caught in spring in the lower Volga and having similar physiological status revealed, that females during spawning run had higher level of total contamination. The study results can be used for the diagnosis and correction of the physiological state of sturgeons cultivated in ponds with closed water supply systems with the application of artificial feed.
aquaculture, sturgeon, stellate sturgeon, breeders, physiology, bacterial contamination
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