scholarly journals Comparative characterization of the roach Rutilus rutilus heckelii (Nordmann, 1840) sampled in different areas of the Sea of Azov during its spawning season in 2021, based on its physiological and biochemical parameters

2021 ◽  
Vol 937 (2) ◽  
pp. 022062
Author(s):  
A Vojkina ◽  
L Bugayov ◽  
V Belousov ◽  
V Licovskaya ◽  
O Kirishenko
Keyword(s):  
Biochemical Parameters ◽  
Biochemical Analysis ◽  
Rutilus Rutilus ◽  
Spring Season ◽  
Roach Rutilus Rutilus ◽  
Azov Sea ◽  
Fish Blood ◽  
Physiological And Biochemical ◽  
Low Activity

Abstract Four samples of Rutilus rutilus collected in various water bodies of the Azov Sea Basin have been investigated. Individuals were examined during their spawning migration in the spring season of 2021. The differences in some physiological and biochemical parameters between the studied samples were considered. It has been found that the content of lipids in the sexual products of males was higher than in the gonads of females, and the protein was lower. Biochemical analysis of fish blood serum showed differences in the level of albumin between females and males and in the amount of triglycerides in the individuals from different fishing sites. In the liver of the fish from the Vostochno-Akhtarskoe (East Akhtarsk) Hatchery, a low activity of all investigated enzymes of the antioxidant system has been recorded.

scholarly journals Molecular isolation and characterization of the kisspeptin system, KISS and GPR54 genes in roach Rutilus rutilus

2018 ◽  
Vol 25 (36) ◽  
pp. 36759-36764
Author(s):  
Perrine Geraudie ◽  
Marie Gerbron ◽  
Anne E. Lockyer ◽  
Susan Jobling ◽  
Christophe Minier
Keyword(s):  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus ◽  
Isolation And Characterization

scholarly journals STOCK ASSESSMENT AND LONG-TERM DYNAMICS OF AZOV SEA ROACH (RUSSIAN WATERS), BASED ON CMSY MODEL FOR DATA-LIMITED MODELLING IN PERIOD (1999-2019)

Fisheries ◽  
2020 ◽  
Vol 2020 (6) ◽  
pp. 88-94
Author(s):  
Nikolay Zherdev ◽  
M. Pyatinsky ◽  
Inna Kozobrod
Keyword(s):  
River Flow ◽  
Stock Assessment ◽  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus ◽  
Surplus Production ◽  
Azov Sea ◽  
Production Models ◽  
Stock Biomass ◽  
Russian Waters

Stock assessment of Azov sea roach Rutilus rutilus (Linnaeus, 1758) has been performed by CMSY model in period 1999-2019 by data-limited modelling in R. The current population status – in biological safe zone for stock biomass and no overfishing signals (B2019/BMSY = 1,32, F2019/FMSY = 0,53). Perhaps, current paper results can be a slightly incomplete in background that there is no relevant data about IUU fishery ever exists, which can lead to fishing mortality underestimation. Azov sea roach population continue to be in “depleted” status after river flow regulation in 1950’s. Joined continuous biomass estimates time series over whole fishing his-tory 1932–2019 showed at least 2 population collapses: in 1940’s and 1980’s years. According to model re-sults TAC (total allowed catch) should be accepted at level 516.9 t. If the recommendation is followed stock biomass will stay at safety in level 1828.1 t. Data limited modelling shows a good performance for sea roach in background of data lucking and in this reason still the best choose against cohor or surplus production models.

scholarly journals Biochemical and hematological parameters of the roach Rutilus rutilus heckelii (Nordmann, 1840) from the Sea of Azov stock in the spring season of 2020–2021

2021 ◽  
Vol 937 (2) ◽  
pp. 022065
Author(s):  
V Lisovskaya ◽  
A Voykina ◽  
S Sergeeva ◽  
O Kirichenko ◽  
L Bugaev
Keyword(s):  
Hematological Parameters ◽  
Physiological State ◽  
Rutilus Rutilus ◽  
Average Concentration ◽  
Gonad Maturation ◽  
Sea Of Azov ◽  
Spring Season ◽  
Roach Rutilus Rutilus ◽  
Spawning Period ◽  
The Sea Of Azov

Abstract This work presents the results of the investigation of the physiological state of the roach Rutilus rutilus heckelii breeders from the Sea of Azov stock during the spawning period. It has been established that, in the spring season of 2020 and 2021, the content of proteins and lipids in fish tissues, as well as hematological parameters in all investigated roach specimens from different water bodies were consistent with the average long-term values. The content of proteins in the muscles and liver of roach does not differ by sex. A higher protein content in the gonads of females is characteristic of the pre-spawning period due to the process of gonad maturation. The high content of lipids in the gonads of males apparently results from the lower energy consumption for maturation of the gonads and spawning. The average concentration of sodium and potassium ions decreased in comparison with the values obtained in 2020, while the concentration of chloride anions increased. It has been concluded that the physiological state of all investigated roach specimens was normal.

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