THE COMPARATIVE CHARACTERISTIC OF BIOLOGICAL INDICATORS OF THE BREAM ABRAMIS BRAMA IN THE KAMA AND VOLGA REACHESES OF THE KUIBYSHEV RESERVOIR

2017 ◽  
pp. 56-63
Author(s):  
Vladimir Vyacheslavovich Kuznetsov ◽  
Vyacheslav Alekseevich Kuznetsov
Keyword(s):  
Body Length ◽  
Age Structure ◽  
Biological Indicators ◽  
The Body ◽  
Comparative Characteristic ◽  
Abramis Brama ◽  
Kuibyshev Reservoir ◽  
Average Mass ◽  
Bream Abramis Brama ◽  
Better Than

The article consideres the dimensional and age structure, growth and coefficient of fatness of the bream Abramis brama in the Volga and the Kama reaches of the Kuibyshev reservoir in 2011-2014. In the period of bream spawning, according to Fulton, in May 2012 there was carried out accounting of sire species of bream in the reaches of the Kama, in the Volga reaches in May, 2013. However the average sizes of the body length of the bream statistically did not differ, and values of average mass of his body in the Kama reaches were higher. Fish age in the Volga reaches fluctuated between 2+…11+ years old, i.e. in the Kama reaches there were more species of older age. However, comparing age of the fish caught in 2012, one can see that the results in both places were equal, i.e. reproduction level differs very little. Dominating in catches of 2011-2014 were bream species born in 2004, 2005 and 2008. Among producers there were species of 2004-2005 generations. Growth of the bream in a phase of destabilization of an ecosystem of the Kuibyshev reservoir in comparison even with river conditions was slowed down. It can be noted that growth of the bream in a phase of destabilization of an ecosystem of the Kuibyshev reservoir in comparison even with river conditions was slowed down. In the Volga reaches even-aged individuals of the bream grow better, than in the Kama reaches where biomass of fodder benthos is lower. In the Kama reaches average sizes of fatness coefficient on Fulton are higher than in the Volga reaches.

scholarly journals FISH FAUNA OF SMALL RIVERS OF CENTRAL VOLGA AREA (KAZANKA RIVER)

2019 ◽  
pp. 44-50
Author(s):  
Vladimir Vyacheslavovich Kuznetsov ◽  
Vyacheslav Alekseevich Kuznetsov
Keyword(s):  
Body Length ◽  
Fish Fauna ◽  
Hydrological Regime ◽  
Middle Part ◽  
Shannon Index ◽  
The Body ◽  
Small Rivers ◽  
Polluted Water ◽  
Kuibyshev Reservoir ◽  
Commercial Fish

The article considers the specific structure of the fish fauna in the Kazanka River in the late XIX - early XXI. In the lower reaches of the river, according to the documents of 1995-1996, there lived 22 fish species, and in the middle part of the river there are16 species in 2009-2017. These are mainly representatives of the carp family (Cyprinidae), of which 9 species belong to the Ponto-Caspian faunistic complex and 10 species - to the boreal lowland. The amphiboreal complex consisted of 5 species. In the middle reaches of the river, unlike the lower reaches, a loach was encountered. Differences in species diversity in the lower and middle reaches of the river are associated with changes in the hydrological regime characteristic of the Kuibyshev Reservoir, which is observed in the river. The presence of a continuous current caused the disappearance or significant reduction in the number of commercial fish (pike perch, catfish, bluebone, sabrefish). In different years silver crucian, ruff and bleak dominated in fish catches in the middle reaches of the river, the abundance of which ranged from 27.5 to 86.4%. Starting from 2012 in the Kazanka River the proportion of crucian in catches increased significantly. This is connected with its transition from gynogenetic triploid form, when there were only females in the population, to diploid (bisexual) form, and with a high degree of resistance to various pollutants. In the catches there were found silver crucian species at the age 4+ - 8+ years, body length 12.0-22.0 cm. The growth of this species in the Kazanka river was slower than in the Volga reaches near Kuibyshev Reservoir. In some years, ruff also prevailed in the catches making up 27.5-47.7% of the total fish catch, but the fluctuation of its population was high due to the fish death caused by frequent discharge of polluted water into the river. In catches ruff occurred at the age of 0+ - 4+ , body length 5.0-12.0 cm. The body length of of even-aged ruff individuals in the river was less than that in Kuibyshev Reservoir. Bleak dominated in catches only in 2009, accounting for 86.4% of the catch. Shannon index on the Kazanka River in some years ranged from 0.94 to 2.57 bits and was defined by both the number of species and the indicator of abundance.

scholarly journals BREAM FECUNDITY (ABRAMIS BRAMA LINNAEUS, 1758) IN THE VOLGA DELTA

2018 ◽  
pp. 49-61
Author(s):  
Vladimir Prokofievich Ivanov ◽  
Natalia Vadimovna Levashina
Keyword(s):  
Biological Indicators ◽  
Caspian Region ◽  
Abramis Brama ◽  
Research Results ◽  
Absolute Fecundity ◽  
The North ◽  
Main Indicator ◽  
Bream Abramis Brama ◽  
Maturation Rate ◽  
Correlation Parameters

Negative processes in the North Caspian related to low water in 2006, 2008-2012, 2014 and 2015 have resulted in drastic decrease of abundance of the most numerous species - bream Abramis brama (Linnaeus,1758). Bream remains the main mass species of the Volga-Caspian region, despite changes in qualitative structure of the population, reducing age, size and weight of species in commercial catches. The article presents research results of bream Abramis brama fecundity and changeability depending on the environment. Deterioration of habitat conditions of bream population adversely affected all biological indicators of bream; in particular, absolute fecundity of females has decreased. There has been established some positive correlation dependence of individual absolute fecundity with length, weight and age of a species. The work presents correlation parameters, equations of regression. There has been observed a decrease in relative fecundity of bream Abramis brama , which is a main indicator of intensive reproduction of the population in changing environment. The article gives data on dramatic reduction of bream maturation rate. The research results provide practical value in solving problems of fish stocks regulation, abundance recovery and increased catches of bream in the Volga-Caspian region.

Age Structure and Growth in the Lataste’s Toad, Bufotes latastii (Anura: Bufonidae)

2020 ◽  
Vol 27 (3) ◽  
pp. 165-171 ◽  
Author(s):  
Sergey Marlenovich Lyapkov ◽  
Artem Aleksandrovich Kidov ◽  
Irina Vladimirovna Stepankova ◽  
Kirill Aleksandrovich Afrin ◽  
Spartak Nikolaevich Litvinchuk
Keyword(s):  
Growth Rate ◽  
Body Length ◽  
Age Structure ◽  
Mean Value ◽  
The Body ◽  
Jammu And Kashmir ◽  
Different Ages ◽  
Length Increment

The paper provided the first data about age structure and growth of the Lataste’s toad, Bufotes latastii (Boulenger, 1882), from the Jammu and Kashmir State (India). The study of age structure of toads was carried out using skeletochronology. The minimal and maximal ages in males of B. latastii were 3 and 10 years, respectively, with mean age of 6.0 years. The majority of males (70%) were 5 or 6 years old. The age in females ranged from 4 to 10 years with mean value of 5.9 years. The majority of females (71%) were 4 – 6 years old. Males of B. latastii can reach maturation after three winterings and females after four winterings. The body length increment in males is 3.6 times, whereas in females is 3.7 – 4.0 times. After maturation, the growth rate is retarded and the individuals of different ages did not differ in its body length. In spite of maximal age of 10 years in both sexes, the largest male was 5 years old and the largest female was 4 years old.

scholarly journals Age of mass maturing and commercial measure of the Gizhiga-Kamchatka herring in conditions of the active fishery renewal

2016 ◽  
Vol 187 (4) ◽  
pp. 110-115
Author(s):  
Andrey A. Smirnov ◽  
Victor V. Ovchinnikov ◽  
Julia A. Elatintseva
Keyword(s):  
Body Length ◽  
Age Structure ◽  
Negative Impact ◽  
Age Groups ◽  
The State ◽  
The Body ◽  
Pacific Herring ◽  
Biological Structure ◽  
The Mean ◽  
Mature Fish

Data on age of mass maturing and biomass culmination for pacific herring from the Gizhiga-Kamchatka population in conditions of active fishery are presented. Dynamics of its age structure is considered for the periods before active fishery and after its renewal. After the fishery renewal, the portions of mature fish by age groups had increased and the age of mass maturing had decreased, the body length of mass maturing became smaller, the mean body length and weight had decreased for the majority of age groups, and the rate of maturing had increased for females. The established commercial measure corresponds well to recent biological structure of the population. There is concluded that the active fishery during five years has no negative impact on the state of the Gizhiga-Kamchatka population of herring.

scholarly journals A comparative analysis of the relationship between stature and ultrasound dimensions of internal organs in adolescents

2021 ◽  
Vol 12 (2) ◽  
pp. 19-27
Author(s):  
Valerii O. Yerkudov ◽  
Andrey P. Pugovkin ◽  
Aleksej J. Volkov ◽  
Oksana I. Musaeva ◽  
Dmitriy J. Volkov ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Body Length ◽  
Individual Characteristics ◽  
The Body ◽  
Comparative Characteristic ◽  
Z Score ◽  
Internal Organs ◽  
Average Group ◽  
The Individual ◽  
The Relationship

The aim of the study was a comparative characteristic of the size of internal organs according to ultrasonography data in subjects with various deviations in stature, determined using international standardized norms. Materials and methods. The stature was measured in 93 adolescents, aged 13 to 17 years. Based on the measurements, the Z-score of body length was calculated according to the WHO Growth Reference, 2007 and three groups were formed for comparing the sizes of internal organs: average, above average, below average. Ultrasonography data of the internal organs dimensions and thyroid gland was performed using a Toshiba Aplio 500 ultrasound scanner. Results. There were statistically significantly lower values of the liver span and the longitudinal size of the gallbladder in the examined subjects from the below average group compared to the rest of the subjects. The length of the spleen and the total volume of the thyroid gland were statistically significantly different in subjects from all three groups, with the highest values in volunteers from the above average group. A weak direct correlation was shown between the Z-score of body length and liver span, the length of the cauda of the pancreas, and the width of the spleen. An average direct statistical relationship was found between the Z-score of stature and the length of the spleen, as well as the total volume of the thyroid gland. Conclusion. To a greater extent, body length is associated with the size of the parenchymal organs with a pronounced connective tissue frame - the liver and spleen, as well as the thyroid gland due to the relationship of its volume with hormones that regulate growth and development. Clinical substantiation of the relationship between the structure of the body and internal organs opens up the possibility of creating anatomical standards that allow ultrasound morphometric assessment of internal organs, taking into account the individual characteristics of the patients body size.

scholarly journals THE BIOLOGICAL OF SUBSTANTIATION FISHING MEASURE OF THE BREAM ABRAMIS BRAMA IN THE KUIBYSHEV RESERVOIR

2016 ◽  
Vol 17 (3) ◽  
pp. 2990-295
Author(s):  
Yu.A. Severov ◽  
◽  
F.M. Shakirova ◽  
R.G. Tairov ◽  
O.K. Anokhina ◽  
...  
Keyword(s):  
Abramis Brama ◽  
Kuibyshev Reservoir ◽  
Bream Abramis Brama

scholarly journals THE INFLUENCE OF FISHING ON THE AGE STRUCTURE OF BREAM (ABRAMIS BRAMA) OF THE DNIEPER-BUG ESTUARY REGION

2013 ◽  
pp. 12-16
Author(s):  
U. Pilipеnko ◽  
◽  
І. Lobanov ◽  
V. Kornijenko ◽  
◽  
...  
Keyword(s):  
Age Structure ◽  
Abramis Brama ◽  
Bream Abramis Brama

scholarly journals Characteristics of biology of goldfish Carassius auratus (L.) in small rivers of the Kuibyshevsky water reservoir basin

2020 ◽  
Vol 0 (1) ◽  
pp. 17-26
Author(s):  
Vjatscheslav Kuznetsov ◽  
Vladimir Kuznetsov
Keyword(s):  
Body Length ◽  
Carassius Auratus ◽  
Water Reservoir ◽  
The Body ◽  
Small Rivers ◽  
Kuibyshev Reservoir ◽  
Age Composition ◽  
Goldfish Carassius Auratus ◽  
Reservoir Basin ◽  
Average Body

The article touches upon the problems of breeding goldfish Carassius Auratus (L.), abundance of juveniles, size and age composition of the catches and the growth of this species in small rivers (for example, the Kazanka River and the lower reaches of the Sviyaga River) in terms of stocking the Kuibyshev Reservoir by goldfish. It has been stated that the process of stocking small rivers with goldfish has much in common with that in the reservoir. Spawning in the Kazanka in 2016 proceeded in two stages, and the gonads contained the roe of 2 portions. The first mass spawning took place from 11 to 20 May, and the second spawning – from 11 to 20 June. Macrophytes, driftwood and washed away roots of trees served as substrate for spawning. During the reproduction period of the species in the river the proportion of females made 75.0%, males - 25.0%. In the lower reaches of the Sviyaga in the period of 1998-2001 the proportion of males in catches made 26.1-65.7%. The maximum number of goldfish larvae and fingerlings in the lower reaches of the Sviyaga was observed in 2007-2009 and in 2014. These years had a similar regime of water level, but different temperature conditions in the spring period. Males in the catches had smaller sizes and body weight, compared with females. In the Kazanka in 2013-2016 the average body length of females in catches ranged within 16.7-23.8 cm, and males – within 15.9-20.6 cm. The age composition of goldfish in the river in 2013 consisted of 4-8 summer fish of 2006-2008 generations. Among them prevailed individuals at the age of 6 (53.1%) of the 2006 generation. In 2014-2016 in the catches there were fish aged 6-9 years old, although there were individuals up to 15 years old. The body length of the similar aged individuals of both sexes was not significantly different. Student criterion between both sexes at different ages ranged from 0.06 to 0.84. Growth of individuals of different generations in 2007-2010 also did not differ reliably. Thus, the average body size of 6- year-old fish of these generations ranged from 17.7 to 18.1 cm. The growth of goldfish in different reaches of the Kuibyshev Reservoir was higher than in the Kazanka, but Fulton fatness coefficient in the river was lower. The average values of the fatness coefficient ranged from 3.24 to 3.63 in the river, and in the reservoir reaches they are from 2.93 to 3.07.

Fecundity of Grand Bank Haddock

1963 ◽  
Vol 20 (6) ◽  
pp. 1465-1487 ◽  
Author(s):  
V. M. Hodder
Keyword(s):  
Early Development ◽  
Body Length ◽  
Environmental Conditions ◽  
Food Supply ◽  
The Body ◽  
Age Group ◽  
Individual Fish ◽  
The Individual ◽  
Better Than

The fecundity of Grand Bank haddock was investigated from 229 specimens collected during the early springs of 1957–61. It was found that fecundity increased at a rate proportional to about the fifth power of the body length and to the square of the age, the correlations between fecundity and length and between fecundity and weight being better than that between fecundity and age. Within any age-group fecundity was found to increase with length. Since the larger fish of an age-group are the first to mature, it is suggested that fecundity of individual fish may be more directly related to the number of times that the fish has spawned than to such parameters as length, weight or age. Certain differences in fecundity, found between the samples of the individual years, are discussed in relation to such environmental conditions as temperature in so far as it determines the degree of haddock concentration (thus affecting the food supply) at certain times which are probably critical during the early development and maturation of the ova.

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