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.

scholarly journals THE INFLUENCE OF THE HIGH CONTENT OF Cа2+, Mg2+ AND Nа+ ON VARIABILITY OF THE PORES NUMBER IN LATERAL LINE CRANIAL CANALS OF ROACH FINGERLINGS

2020 ◽  
pp. 128-135
Author(s):  
B. G. Kotegov ◽  
Keyword(s):  
Lateral Line ◽  
Rutilus Rutilus ◽  
Individual Development ◽  
Control Group ◽  
Roach Rutilus Rutilus ◽  
Seismosensory System ◽  
Spawning Period ◽  
Aquarium Experiment ◽  
Calcium Magnesium ◽  
Chloride Salts

In a five-month aquarium experiment, roach Rutilus rutilus (Linnaeus, 1758) fingerlings were grown under different hydrochemical conditions. Roach eggs were collected during the spawning period in the shallow coastal waters of a small isolated and unpolluted pond and placed in laboratory for subsequent incubation. Hatched early larvae after switching to exogenous nutrition were divided into four groups for further development in control hydrochemical condition and in the water with a total mineralization increased twice relative to the control due to the addition of calcium, magnesium or sodium chloride salts. At the end of the experiment, roach fingerlings grown in the three groups in conditions of increased water mineralization differed statistically significantly from their coevals in the control group by a smaller average number of pores in the lateral line canals located on some paired dermal bones of the head. Also, these three groups of roach in comparison with the control group were characterized by an increase in the dispersion of the fluctuating asymmetry of the total values of the studied bilateral counting features. The obtained results are explained in the light of the possible influence of the above biologically significant cations on the morphogenesis of the cranial seismosensory system during the early individual development of fishes.

Fecundity of Two Cyprinid Fishes in the River Thames, Reading, England

1969 ◽  
Vol 26 (11) ◽  
pp. 2795-2805 ◽  
Author(s):  
I. Mackay ◽  
K. H. Mann
Keyword(s):  
Population Density ◽  
Egg Production ◽  
Rutilus Rutilus ◽  
Confidence Limits ◽  
Roach Rutilus Rutilus ◽  
Spawning Period ◽  
Cyprinid Fishes ◽  
River Thames ◽  
The Relationship ◽  
Bleak Alburnus Alburnus

Egg production by two cyprinids in the River Thames at Reading, England, was studied quantitatively from January to June 1966. Roach (Rutilus rutilus) had a short spawning period, shedding all their eggs in one batch, whereas bleak (Alburnus alburnus) had a protracted spawning period and produced two or three batches of eggs. The relationship between egg numbers (Y) and age (X) for roach was given by log Y = 0.0840X + 3.2085; the estimated fecundity of a 6-year-old fish was 5157 with 95% confidence limits at 4725 and 5631. For bleak the relationship was log Y = 0.0564X + 3.5221, and the estimated fecundity of a 5-year-old fish was 6356 with 95% confidence limits at 5987 and 6776. Combining previously obtained data on population density with new data on sex ratio and percentage breeding in each age class, the population fecundity for roach was about 600 eggs/m2 and for bleak about 3000 eggs/m2.The roach population had lower fecundity than roach populations in other studies and there was some evidence that a proportion of females ceased egg production during the period of the study. The possibility that low fecundity was a response to food shortage is discussed.

Breeding Tubercles, Papillomatosis and Dominance Behaviour of Male Roach (Rutilus rutilus) During the Spawning Period

Ethology ◽  
2004 ◽  
Vol 110 (8) ◽  
pp. 591-601 ◽  
Author(s):  
Raine Kortet ◽  
Jouni Taskinen ◽  
Anssi Vainikka ◽  
Hannu Ylonen
Keyword(s):  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus ◽  
Spawning Period ◽  
Dominance Behaviour

Endocrine effects of the tapeworm Ligula intestinalis in its teleost host, the roach (Rutilus rutilus)

Parasitology ◽  
2009 ◽  
Vol 137 (4) ◽  
pp. 697-704 ◽  
Author(s):  
P. GERAUDIE ◽  
C. BOULANGE-LECOMTE ◽  
M. GERBRON ◽  
N. HINFRAY ◽  
F. BRION ◽  
...  
Keyword(s):  
Plasma Concentrations ◽  
Endocrine System ◽  
Reproductive Function ◽  
Rutilus Rutilus ◽  
Infected Fish ◽  
Gonad Maturation ◽  
Aromatase Activity ◽  
Roach Rutilus Rutilus ◽  
Ligula Intestinalis ◽  
Brain Aromatase

SUMMARYThe effects of parasite infection by the cestode Ligula intestinalis on the reproductive function and endocrine system of wild roach Rutilus rutilus were evaluated. Gonad maturation, plasma vitellogenin, plasma steroid concentrations (i.e. progesterone, 11-keto-testosterone and 17-β-estradiol) and brain aromatase activity were investigated in relation with parasitization. A low prevalence (8%) of ligulosed roach and a moderate impact of parasitization (mean parasitization index of 8·8%) were found in the studied population. Inhibition of gonad maturation generally resulted from infestation but 5% of the ligulosed roach nevertheless reached maturity. Main sex steroid plasma content was depleted in both genders. Male 11-keto-testosterone, female 17-β-estradiol and progesterone plasma concentrations of both genders were, respectively, 27, 5 and 3 times lower in ligulosed fish when compared to their non-infected counterparts. Progesterone levels were negatively correlated with the parasitization index in females. Brain aromatase activity of infected roach was reduced to 50% of that of the non-infected fish. These results demonstrate significant negative effects on the reproductive function of wild roach infected by the tapeworm L. intestinalis collected from a site with low contamination.

scholarly journals Tolerance of roach for modified water mineralization levels and temperatures expressed by biochemical indicators

2018 ◽  
Vol 26 (3) ◽  
pp. 165-172
Author(s):  
Oleksandr S. Potrokhov ◽  
Oleg G. Zinkovskyi ◽  
Mykola V. Prychepa ◽  
Yuryi M. Khudiyash
Keyword(s):  
Lactate Dehydrogenase ◽  
Water Temperature ◽  
Sharp Increase ◽  
Physiological State ◽  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus ◽  
Biochemical Indicators ◽  
Water Mineralization ◽  
Aerobic Processes ◽  
Combined Actions

Abstract Changes in the activity of Na+/K+-ATPase, lactate dehydrogenase, and succinate dehydrogenase in the white muscles and gill petals of roach, Rutilus rutilus (L), were studied for the combined actions of water mineralization and water temperature. It was established that decreased mineralization to 260.0 mg dm-3 and increased water temperature to 32°C increased aerobic processes in roach tissues. A sharp increase in water temperature and changes in water mineralization significantly affected the tolerance and physiological state of fish and could impact their abundance in waterbodies.

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 Restoration of a river backwater and its influence on fish assemblage

2011 ◽  
Vol 50 (No. 10) ◽  
pp. 473-482 ◽  
Author(s):  
E. Hohausová ◽  
P. Jurajda
Keyword(s):  
Fish Assemblage ◽  
Perca Fluviatilis ◽  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus ◽  
Spawning Period ◽  
Spawning Site ◽  
Perch Perca Fluviatilis ◽  
Current Value ◽  
Morava River ◽  
Habitat Development

The development of fish assemblage in a restored river backwater (Kurfürst backwater, Morava River, Czech   Republic) was monitored over a six-year period from its restoration. The structure of fish assemblage remained similar throughout the years. Species richness of adult fish increased from twelve species during the restoration to 20 after it. Initially steady fish abundance (mean 52.3–98.1 inds/ha) and biomass (mean 5.8–7.6 kg/ha) increased significantly in 1999 five years after restoration (576.9 inds/ha and 23.3 kg/ha, respectively). The main resident species were pike Esox lucius, roach Rutilus rutilus, rudd Scardinius erythrophthalmus and perch Perca fluviatilis. High abundance of bleak Alburnus alburnus and chub Leuciscus cephalus was related to their spring spawning period. The structure of the 0+ fish assemblage was similar throughout the years, with chub and bleak prevailing during the restoration, and roach, chub and rudd after it. The number of 0+ species increased from seven to 17. The monitoring documented that the restoration could be considered as beneficial for the fish assemblage. Habitat development of the backwater is likely to influence its current value as a refuge, spawning site and nursery for local fish populations.  

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