scholarly journals ECOLOGICAL AND PHYSIOLOGICAL ASPECTS OF STURGEON CULTIVATION IN INDUSTRIAL CONDITIONS

2017 ◽  
pp. 128-135
Author(s):  
Angelika Vyachislavovna Kovaleva ◽  
Petr Petrovich Geraskin ◽  
Vadim Alekseevich Grigoriev ◽  
Gennadiy Fedorovich Metallov ◽  
Elena Nikolaevna Ponomareva
Keyword(s):  
Serum Protein ◽  
Bacterial Contamination ◽  
Physiological State ◽  
Physiological Status ◽  
Water Supply Systems ◽  
Natural Habitats ◽  
Stellate Sturgeon ◽  
Lower Volga ◽  
Study Results ◽  
Sturgeon Fish

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.

ABOUT SOME PECULIARITIES OF THE PHYSIOLOGICAL HETEROGENEITY OF THE POPULATION OF SCENEDESMUS QUADRICAUDA (TURP.) BREB. IN THE PRESENCE OF LOW CONCENTRATIONS OF METALS

2018 ◽  
pp. 34-43
Author(s):  
V. I. Ipatova ◽  
A. G. Dmitrieva ◽  
О. F. Filenko ◽  
T. V. Drozdenko
Keyword(s):  
Cell Division ◽  
Toxic Effect ◽  
Copper Chloride ◽  
Single Cells ◽  
Physiological State ◽  
Scenedesmus Quadricauda ◽  
Physiological Status ◽  
Lag Phase ◽  
Protective Mechanism ◽  
Low Concentrations

The structure of the laboratory population of green microalgae Scenedesmus quadricauda (Turp.) Breb (=Desmodesmus communis E. Hegew.) was studied at different stages of its growth (lag-phase, log-phase and stationary phase) at low concentrations of copper chloride and silver nitrate by the method microculture, allowing to monitor the state and development of single cells having different physiological status. The response of the culture of S. quadricauda - the change in the number of cells and the fractional composition (the fraction of dividing, «dormant» and dying cells) depended not only on the concentration of the toxicant in the medium, but also on the physiological state of the culture: the level of synchronization and the growth phase. Silver ions at low concentrations had a more pronounced toxic effect on the culture than copper ions at different phases of its development, especially at a concentration of 0.001 mg/l (10-9 M). The main mechanism of the toxic effect of metals is to inhibit the process of cell division. At low concentrations of toxicants, especially at a concentration of 0.001 mg/l, a «paradoxical» effect expressed in the predominance of the fraction of «dormant» cells was revealed. The temporary inhibition of the process of cell division can be regarded as a protective mechanism that allows preserving the integrity of the population and its ability to survive in a changing environment. The obtained data explain the effect of action of low concentrations of substances due to their inclusion in the cell, the subsequent accumulation in the cell and their low excretion.

Efficacy of prayer in inducing immediate physiological changes: a systematic analysis of objective experiments

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Felix Chin ◽  
Ryan Chou ◽  
Muhammad Waqas ◽  
Kunal Vakharia ◽  
Hamid Rai ◽  
...  
Keyword(s):  
Physiological State ◽  
Experimental Studies ◽  
Peripheral Resistance ◽  
Pain Tolerance ◽  
Physiological Status ◽  
Physiological Changes ◽  
Mental Functioning ◽  
Baroreceptor Sensitivity ◽  
Systematic Analysis ◽  
Blood Marker

Abstract Objectives To assess the immediate impact of prayer on physiological state by systematically reviewing objective, controlled experimental studies in the literature. Content Experimental studies measuring objective physiological changes induced by prayer. Studies containing the keyword, “Prayer” anywhere in the title or abstract were curated from the following databases: Public/Publisher Medline (PubMed), Excerpta Medica Database (EMBASE) and the Cumulative Index to Nursing and Allied Health Literature (CINAHL) in May 2019. Titles and abstracts were screened with the remaining 30 articles analyzed for inclusion. Only experimental studies were included. Summary Eight experimental studies were identified of which five investigated neurocognitive changes and three investigated systemic physiological changes during prayer. The five studies focusing on neuroactivity used functional MRI (fMRI), electroencephalography or SPECT imaging to obtain measurements. The remaining three studies analyzed an array of systemic physiological metrics, including blood pressure, heart rate, respiratory rate, peripheral resistance, baroreceptor sensitivity and/or cardiovascular rhythm variability during prayer. All studies aside from one saw objective changes during prayer. Neurocognitive changes were mainly associated with improved mental functioning, control and pain tolerance. Prayer was found to slow down physiological functions in two of the three vital-based studies, with the third reporting no change in physiological status. None of the studies measured blood marker changes. Outlook Experimental studies show prayer to induce healthy neurocognitive and physiological changes. Additional studies exploring objective measures from prayer are encouraged to provide practitioners with a more nuanced, scientific perspective when it comes to prescribing prayer as a complementary and alternative medicine (CAM) therapy.

scholarly journals PHYSIOLOGICAL STATE AND PRODUCTIVITY OF ANIMALS UNDER THERMAL STRESS

2019 ◽  
Vol 51 (3) ◽  
pp. 26-31
Author(s):  
E.A. Azhmuldinov ◽  
◽  
Yu.N. Chernyshenko ◽  
M.G. Titov ◽  
◽  
...  
Keyword(s):  
Hematological Parameters ◽  
Physiological State ◽  
Live Weight ◽  
Blood Parameters ◽  
Maximum Temperature ◽  
Total Plasma ◽  
Ambient Temperatures ◽  
Study Results ◽  
Total Plasma Protein ◽  
Negative Effect

A study was conducted of the effect of heat stress on the clinical and physiological state of male rabbits at the age of 5 months with an average live weight of 1551 g. The maximum temperature the animals were exposed to during the experiment was +42 °C. The study results showed a decrease in feed intake and an increase in water consumption, which contributed to a decrease in live weight. Hematological parameters, including hemoglobin, erythrocytes, leukocytes, total plasma protein, globulins and cholesterol increased during the action of this stress factor. It was found that the effect of high ambient temperatures on rabbits negatively affected their physiological functions; the negative effect was reflected by the morphological and biochemical blood parameters.

PSYCHO-PHYSIOLOGICAL STATUS OF PLAYERS DURING THE ATTACK UNDER GAME CONDITIONS

2020 ◽  
Vol 8 (2) ◽  
pp. 86-92
Author(s):  
Nataliya Lutkova ◽  
Yrii Makarov
Keyword(s):  
Self Regulation ◽  
Physiological Status ◽  
Imaging Technology ◽  
Research Results ◽  
Study Results ◽  
Volleyball Players ◽  
Game Activity ◽  
Balance Energy

In our research we revealed parameters of psycho-physiological status (PPS) of qualified volleyball players during game activity, determined dynamics of those indicators depending on attack efficacy of athletes. The purpose of the research: to identify parameters of psycho-physiological status (PPS) of qualified volleyball players performing attack actions during game activity, which have the greatest informative value for the prediction of the planned results. The task of the study was to identify PPS parameters of qualified players when performing attack actions during game activity. Methods and organization of the research. We used vibration imaging technology with VibraMed10 program to achieve the objective of the study. We brought together 12 volleyball players of the 1st adult sport category, playing for the national volleyball team of P.F. Lesgaft NSU. We determined the following PPS parameters of players: aggression, stress, anxiety, danger, balance, charisma, energy, self-regulation, inhibition, and neuroticism. Research results. The study revealed that parameters of psycho-physiological status of athletes performing attack actions are modified in accordance with all investigated indicators. Dynamics of parameters of psycho-physiological status of players is determined by the effectiveness of performed actions. The study results demonstrate that attack efficacy depends on the number of significant parameters. Such parameters include aggression, balance, energy, self-regulation and charisma. The identified PPS parameters of athletes have the greatest informative value for prediction of the planned results in game activity. Conclusion. We have revealed the informative PPS parameters of qualified volleyball players during game activity, which include aggression, balance, energy, self-regulation and charisma. Dynamics of these indicators determine the attack efficacy of athletes.

scholarly journals Territorial Analysis of Political Preferences of the Population (Based on the Lower Volga Mesoregion of the Southern Federal District of Russia)

2019 ◽  
pp. 172-192
Author(s):  
Vladimir Fesenko ◽  
Liliya Detochenko
Keyword(s):  
Presidential Elections ◽  
Federal District ◽  
Political Life ◽  
Russian Society ◽  
Political Processes ◽  
Political Preferences ◽  
Lower Volga ◽  
Study Results ◽  
Territorial Analysis ◽  
Electoral Preferences

Introduction. In modern Russian society, understanding of elections as an important component of the country’s social and political life in the context of differences in political orientations of the population is increasingly affirmed. This statement makes it possible to consider the geography of elections both in individual regions and in the country as a whole, as well as to conduct a deep historical analysis to better understand the current political processes in the country. Methods. It seems most important to consider this problem in the context of the federal elections for the post of President of the Russian Federation using the statistical method. The comparative and cartographic methods contribute to a better understanding of geographical features of political preferences of the electorate. Analysis. The study shows that the development of any process, including political one, is seriously influenced by the regional specificity of the territory, affecting all of its spheres. In this regard, it is necessary to single out the reasons for the nature of changes in electoral preferences of voters in the territory under study. Results. The authors trace the dynamics of the electoral activity of the population of the Lower Volga mesoregion in the presidential elections. The researchers reveal the change of electoral preferences of voters for the period under review. The paper presents the territorial analysis of the political preferences of the population identified in the process of federal elections; marks their multidirectional nature. The authors identify the main reasons for the changes in electoral preferences of voters in the Lower Volga mesoregion at the presidential elections.

scholarly journals Assessment of physiological status of felids as indicator of their welfare in the wild

2015 ◽  
Vol 13 (1) ◽  
pp. 107-122
Author(s):  
Ekaterina V. Pavlova ◽  
Evgeny A. Ivanov ◽  
Vadim E. Kiriluk ◽  
Vyacheslav V. Rozhnov
Keyword(s):  
Animal Health ◽  
Russian Far East ◽  
Activity Level ◽  
Physiological Status ◽  
Natural Habitats ◽  
Blood Samples ◽  
Hematological Analysis ◽  
In The Wild ◽  
Far Eastern ◽  
Felid Species

One of the main approaches to monitoring the welfare of wild mammal populations in the wild is animal health estimation based on an analysis of their physiological parameters. To assess that for the natural felid populations, we analyzed adrenal activity level, white blood cells (WBC) counts and occurrence of seropositive reactions to different diseases. The first study was conducted in the Southwest Primorye, in natural habitats of Far Eastern leopard. Unevenly cold and snowy winters in 2010 and 2011 provided extreme natural conditions for overwintering mammals across the Russian Far East. Adrenocortical activity of leopards was significantly higher in 2011 (fecal cortisol level was 712.7 ± 92.4  ng g-1) than in 2010 (361.4 ± 80.5 ng g-1). We suggest that abundance and availability of weakened deer and carcasses could facilitate hunting for leopards and help them to avoid starvation. In the second study we used WBC counts as a health index for three felid species: Pallas cat (Daursky State Nature Biosphere Reserve, 2010), Far Eastern leopard (Southwestern Prymorie, 2011), Siberian tiger (Ussuriskii Reserve, 2010-2011). The ratio of neutrophils to lymphocytes (N:L) was used as an indicator of stress and/or disease state. Occurrence of seropositive reactions to 12 different pathogens was analyzed in all the animals after the hematological analysis. Pallas cats had the lowest N:L ratio (1.0 ± 0.1), significantly differing from leopards (42.8 ± 16.0) and tigers (24.5 ± 9.2). The N:L ratio correlated with the occurrence of seropositive reactions but not with the pathogen diversity. Pallas cats had the lowest occurrence of positive reactions to 4 pathogens: Toxoplasma gondii (12.5%), Mycoplasma sp. (12.5%), influenza A (7.1%), and feline leukemia virus (8.3%). Leopards had the highest N:L and occurrence of seropositive reactions only to 2 infections: T. gondii (16.6%) and Candida sp. (100%). On the contrary, tigers had positive responses to 6 pathogens, including canine distemper (7.7%), feline immunodeficiency virus (8.3%) and Aujeszky’s disease (31%), which were not found in other cats. Values of N:L depended also on the time spent to get blood samples. In the big felid species effects of glucocorticoids on the WBC ratio (neutrophilia) were obtained in blood samples from anesthetized animals, taken more than 2 hours after capture. In Pallas cats blood samples were collected within 13 ± 2 min without anesthesia. Thus the high N:L ratio in big felids can be explained by several reasons: stress of capture, immunosuppression and a high diversity of detected infections. The present findings may have important implications for creation of effective conservation strategies of rare felid species in the wild.

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