Dynamics of structural parameters of populations of the bream Abramis brama (Cyprinidae) in Rybinsk Reservoir in 1954–2007

Gerasimov, Yu. V.; Brazhnik, S. Yu.; Strelnikov, A. S.

doi:10.1134/s0032945210060056

Cited by 7 publications

(3 citation statements)

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“…Thisresearch was conducted in the Rybinsk Reservoir, the largest artificial water body in the Russian Federation [ 56 , 57 ]. Its area is 4550 km 2 , its maximum length is 250 km, its width is 70 km, its average depth is 5.6 m, and its catchment area is 150,500 km 2 [ 58 , 59 ].…”

Section: Methodsmentioning

confidence: 99%

Distribution of Essential and Toxic Elements in Pelecus cultratus Tissues and Risk Assessment for Consumer Health

Payuta,

Flerova,

Zaitseva

2023

Toxics

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Nowadays, the problem of inland water pollution is acute. It is caused by vast industrial growth and agricultural intensification. Concentrations of Cd, Pb, Zn, Cu, Mn, Fe, Mg, and Kwere determined in the muscles, liver, and gonads sabrefish from Rybinsk Reservoir areas with different anthropogenic loads. The tissue samples were analyzed by atomic absorption spectrometry. Heavy metals accumulated more intensively in the body of fish from more polluted areas of the reservoir. Among the analyzed elements, the maximum accumulation levels were found for K, Zn, and Fe and the minimum levels were observed for Cd and Pb. The gonads contained the largest concentration of Cd and Mn, the muscles contained the highest concentrations of Mg, and the other elements mainly accumulated in the liver of sabrefish. The THQ and HI values for all elements did not exceed 1, which suggests that there is no potential non-carcinogenic risk to human health. The target values of carcinogenic risk (TR) for cadmium ranged from 8.32 × 10−6 to 1.22 × 10−4 in the muscles. The increased content of cadmium in the gonads of sabrefish not only poses a risk to human health, but also to the reproduction of this species in the Rybinsk Reservoir.

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Section: Methodsmentioning

confidence: 99%

Distribution of Essential and Toxic Elements in Pelecus cultratus Tissues and Risk Assessment for Consumer Health

Payuta,

Flerova,

Zaitseva

2023

Toxics

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“…During human exercise, input impulses to sensory nerves (e.g., muscles and joints) cause the cerebral cortex to accelerate, weakening the tone of the vaginal nerves and increasing the tone of the sympathetic nervous system. This further leads to an increase in adrenaline and epinephrine levels in the adrenal core, causing athletes to breathe faster and deeper and jump faster (Suvorova et al, 2023). However, due to the intense control of the sympathetic nervous system over the internal organs, there is an increase in internal vasoconstriction, which may even exacerbate visceral ischemia.…”

Section: Background Of the Studymentioning

confidence: 99%

Basketball Anterior and Posterior Portal Veins Doppler Imaging of Sports Medicine Technique Exploration

Zhu

2024

EAI Endorsed Trans Perv Health Tech

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INTRODUCTION: Basketball, as a high-intensity sport, has attracted much attention for its effects on the cardiovascular system of athletes. The anterior and posterior portal veins are some of the vital blood vessels in the human circulatory system, and their blood flow is closely related to the athletes' physical status. Doppler ultrasound technology is widely used in sports medicine and provides a powerful tool for an in-depth understanding of the effects of basketball on portal vein blood flow. This study aimed to explore the potential of sports medicine technology in assessing cardiovascular adaptations in athletes through portal Doppler imaging before and after basketball exercise.OBJECTIVES: The primary objective of this study was to analyze the effects of basketball exercise on portal vein blood flow in athletes before and after basketball exercise through the use of Doppler ultrasound technology. Specifically, this study aimed to explore the dynamics of pre- and post-exercise Doppler imaging of the posterior and posterior veins in order to assess the cardiovascular adaptations of athletes during exercise more comprehensively and objectively.METHODS: A group of healthy professional basketball players were selected as the study subjects, and Doppler ultrasound instruments were utilized to obtain portal Doppler images before, during, and after exercise. The functional status of the vasculature was assessed by analyzing parameters such as portal blood flow velocity and resistance index. At the same time, the physiological parameters of the athletes, such as heart rate and blood pressure, were combined to gain a comprehensive understanding of the effects of basketball on portal blood flow.RESULTS: The results of the study showed that the anterior and posterior portal blood flow velocities of the athletes changed significantly during basketball exercise. Before the exercise, the blood flow velocity was relatively low, while it rapidly increased and reached the peak state during the exercise. After exercise, blood flow velocity gradually dropped back to the baseline level. In addition, the change in resistance index also indicated that portal blood vessels experienced a particular stress and adaptation process during exercise.CONCLUSION: This study revealed the effects of exercise on the cardiovascular system of athletes by analyzing the Doppler images of the portal vein before and after basketball exercise. Basketball exercise leads to significant changes in portal hemodynamics, which provides a new perspective for sports medicine. These findings are of guiding significance for the development of training programs for athletes and the prevention of exercise-related cardiovascular problems and provide a valuable reference for further research in the field of sports medicine.

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“…abundance, age and sex structures, fertility, mortality, etc. (Bobretsov, 2009;Gerasimov et al, 2010Gerasimov et al, , 2013Boonstra & Krebs, 2012;Rozenfeld & Sheremetyev, 2016). It is important to note that changes in characteristics of populations occur over a certain time due to consequent alterations.…”

Section: Introductionmentioning

confidence: 99%

Dynamic phase portrait: New possibilities of detecting changes in populations

2019

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This paper demonstrates the possibilities of detecting changes in populations of animals, based on the analysis of their dynamic phase portrait. This method allowed us to clarify the periodization of the process of naturalization of the Black Sea sprat (Clupeonella cultriventris) in the Rybinsk Reservoir and in detail describe the changes in the main dynamic characteristics of the population. On the example of zander (Sander lucioperca) in Lake Vozhe, the state was observed in which intra-population mechanisms activate which slow the increase in population (distribution of individuals from regions with high density). Use of this method allowed us to describe the new stable state of the population of grayling (Thymallus thymallus), which it entered as a result of increase in sport fishing. The data on time of presence of a population in equilibrium state allowed us to correctly unify the materials used for the analysis of changes in its age group.

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Dynamics of structural parameters of populations of the bream Abramis brama (Cyprinidae) in Rybinsk Reservoir in 1954–2007

Cited by 7 publications

References 1 publication

Distribution of Essential and Toxic Elements in Pelecus cultratus Tissues and Risk Assessment for Consumer Health

Distribution of Essential and Toxic Elements in Pelecus cultratus Tissues and Risk Assessment for Consumer Health

Basketball Anterior and Posterior Portal Veins Doppler Imaging of Sports Medicine Technique Exploration

Dynamic phase portrait: New possibilities of detecting changes in populations

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