scholarly journals ISOLATION OF STAPHYLOCOCCUS PASTEURI IN THE CULTURED RUSSIAN STURGEON (ACIPENSER GUELDENSTAEDTII) IN BULGARIA

2022 ◽  
Vol 32 (4) ◽  
Keyword(s):  
Russian Sturgeon ◽  
Acipenser Gueldenstaedtii ◽  
Staphylococcus Pasteuri

scholarly journals Substitution of Krill meal for Fish Meal in Feed for Russian Sturgeon, Acipenser gueldenstaedtii

2016 ◽  
Author(s):  
Yang-yang Gong ◽  
Yan-qing Huang ◽  
Lu-jiao Gao ◽  
Jian-xue Lu ◽  
Hong-liang Huang ◽  
...  
Keyword(s):  
Fish Meal ◽  
Russian Sturgeon ◽  
Acipenser Gueldenstaedtii

Functional state of the organism of the hybrid Russian sturgeon × Siberian sturgeon (Acipenser gueldenstaedtii × Acipenser baerii) after winter in cages in Volga Delta

2021 ◽  
pp. 60-69
Author(s):  
Svetlana Sergeevna Astafyeva ◽  
Alexander Robertovich Lozovskiy
Keyword(s):  
Blood Glucose ◽  
Carbohydrate Metabolism ◽  
Functional State ◽  
Total Protein ◽  
Siberian Sturgeon ◽  
Russian Sturgeon ◽  
Acipenser Baerii ◽  
Glucose Content ◽  
Volga Delta ◽  
Acipenser Gueldenstaedtii

Two-year-olds (15 individuals) and five-year-olds (15 individuals) of the Russian sturgeon × Siberian sturgeon (Acipenser gueldenstaedtii × Acipenser baerii) hybrid, kept in net cages in the Volga delta, were studied after wintering in order to establish the functional state of the organism according to the complex of indicators of the erythron system and metabolism substances. The results of the performed study found that the erythron system in five-year-olds is characterized by a higher content of erythrocytes and blood hemoglobin (0.58 ± 0.01×10 12 l –1 and 64.98 ± 1.29 g/l, respectively), compared with two-year-olds (0.49 ± 0.02×10 12 l –1 and 64.98 ± 1.29 g/l, respectively).The serum iron content in both groups was the same. A higher content of total protein and albumin in the blood, as well as a greater activity of ALT were found in five-year-olds, compared with two-year-olds. Thus, the content of total protein and albumin in blood serum in five-year-olds was at the level of 48.23 ± 1.54 and 21.58 ± 2.34 g/l, respectively, and in two-year-olds — 32.42 ± 0.92 and 13,84 ± 0.61 g/l, respectively (p < 0.05). The activity of serum ALT in five-year-olds was 1.07 ± 0.06 μkat/l, and in two-year-olds — 0.85 ± 0.03 μkat/l (p < 0.01). Serum cholesterol in five-year-olds (3.94 ± 0.04 mmol/l) and two-year-olds (4.4 ± 0.08 mmol/l) did not differ significantly (p > 0.05). The content of serum triglycerides in five-year-olds (4.50 ± 0.49 mmol/l) and in two-year-olds (5.36 ± 0.45 mmol/l) did not differ significantly (p > 0.05). The study of carbohydrate metabolism revealed a pronounced variability in the glycemic index in the younger age group (coefficient of variation 44.7 %) with an average blood glucose value of 2.69 ± 0.31 mmol/l. The blood glucose content of five-year-olds was higher than that of two-year-olds — 3.84 ± 0.24 mmol/l (p < 0.05). The established parameters of variation and the age specificity of the indicators of the erythron system, protein, lipid and carbohydrate metabolism can be used to assess the state of physiological adaptation of the hybrid after wintering in cages in the Volga delta.

Reference Intervals for Blood Analytes of Adult Aquarium‐Housed Russian Sturgeon ( Acipenser gueldenstaedtii )

2020 ◽  
Author(s):  
Stephen E. Cassle ◽  
Roy P.E. Yanong ◽  
Deborah B. Pouder ◽  
Carlos Rodriguez ◽  
Natalie Mylniczenko ◽  
...  
Keyword(s):  
Reference Intervals ◽  
Russian Sturgeon ◽  
Acipenser Gueldenstaedtii ◽  
Blood Analytes

scholarly journals Discovery and identification of candidate sex-related genes based on transcriptome sequencing of Russian sturgeon (Acipenser gueldenstaedtii) gonads

2016 ◽  
Vol 48 (7) ◽  
pp. 464-476 ◽  
Author(s):  
Yadong Chen ◽  
Yongtao Xia ◽  
Changwei Shao ◽  
Lei Han ◽  
Xuejie Chen ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Ribosomal Proteins ◽  
Differentially Expressed Gene ◽  
Gonadal Development ◽  
Differentially Expressed ◽  
Russian Sturgeon ◽  
Female Gonad ◽  
Accurate Identification ◽  
Acipenser Gueldenstaedtii ◽  
Transduction Mechanisms

As the Russian sturgeon ( Acipenser gueldenstaedtii) is an important food and is the main source of caviar, it is necessary to discover the genes associated with its sex differentiation. However, the complicated life and maturity cycles of the Russian sturgeon restrict the accurate identification of sex in early development. To generate a first look at specific sex-related genes, we sequenced the transcriptome of gonads in different development stages (1, 2, and 5 yr old stages) with next-generation RNA sequencing. We generated >60 million raw reads, and the filtered reads were assembled into 263,341 contigs, which produced 38,505 unigenes. Genes involved in signal transduction mechanisms were the most abundant, suggesting that development of sturgeon gonads is under control of signal transduction mechanisms. Differentially expressed gene analysis suggests that more genes for protein synthesis, cytochrome c oxidase subunits, and ribosomal proteins were expressed in female gonads than in male. Meanwhile, male gonads expressed more transposable element transposase, reverse transcriptase, and transposase-related genes than female. In total, 342, 782, and 7,845 genes were detected in intersex, male, and female transcriptomes, respectively. The female gonad expressed more genes than the male gonad, and more genes were involved in female gonadal development. Genes (sox9, foxl2) are differentially expressed in different sexes and may be important sex-related genes in Russian sturgeon. S ox9 genes are responsible for the development of male gonads and foxl2 for female gonads.

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