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Impact of low-molecule acidic peptides on growth and histological structure of inner organs of marbled crayfish Procambarus fallax (Hagen, 1870) F. virginalis

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Marenkov O., Fedonenko E., Naboka A.

International Letters of Natural Sciences

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2016

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tom 56

The results of studies on the effects of low molecular weight acidic solution peptides on the growth and development of the marbled crayfish artificial cultivation.An increasing weights of juvenile freshwater crayfish under the influence of dietary supplement "Albuvir" drug. With the use of histological methods of research, found the impact of 0.01 % solution of the drug on the state of the marbled crayfish lobules of hepatopancreas and fat cells. Developed a method for growing juvenile freshwater crayfish with "Albuvir", which allows to increase the weight gain of crustaceans on 24.3–27.2 % and reduce the level of cannibalism at 20 %.

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The influence of heavy metal ions on the viability and metabolic enzyme activity of the marbled crayfish Procambarus virginalis (Lyko, 2017)

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Marenkov O., Prychepa M., Kovalchuk J.

International Letters of Natural Sciences

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2018

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tom 70

The article shows the results of studies on the influence of heavy metal ions (manganese, nickel, lead) on the viability and metabolic enzyme activity of marbled crayfish Procambarus virginalis (Lyko, 2017) (Decapoda). Due to the fact that marbled crayfish got into the reservoirs of the Dnipropetrovsk region in 2015, it was necessary to study the possibilities of its adaptation to environmental factors of reservoirs for further prediction of its distribution or even acclimatization under conditions of toxicological contamination of the ponds of the steppe Prydniprovya. In the experiment with marbled crayfish, chronic effects of various concentrations of heavy metal ions on the physiological state and enzyme activity were investigated. The obtained results showed that among the investigated heavy metals nickel ions influenced the weight indexes and mortality of crustaceans the most negatively. According to the results of the research, significant changes were noted in the individual biochemical parameters of marbled crayfish under the influence of manganese, lead and nickel ions. The most significant changes in the activity of lactate dehydrogenase were detected in muscle tissues affected by manganese and nickel ions. A significant decrease in the activity of succinate dehydrogenase in muscle of marbled crayfish was determined after the action of heavy metal ions. Investigation of changes in the activity of alkaline phosphatase under the influence of the ions of manganese, lead and nickel has its own characteristics, which indicates certain violations in the tissues of cell membranes. Changes in the activity of enzymes were also reflected in the overall protein content. In conclusion, changes in these parameters may indicate a rapid biochemical response of crustaceans to the toxic effects of heavy metals.

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Parameters of the histological adaptation of marmorkrebs Procambarus virginalis (Lyko, 2017) (Decapoda, Cambaridae) to manganese, nickel and lead ions pollution

80%

Naboka A., Marenkov O., Kovalchuk J., Shapovalenko Z., Nesterenko O., Dzhobolda B.

International Letters of Natural Sciences

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2018

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tom 70

Manganese, lead and nickel are heavy metals, which are the primary fresh water toxic contaminants being in the most dangerous class of chemicals. Heavy metals cause functional disorders in the tissues and organs of hydrobionts, affecting their linear and weight indices, reproductive system, digestive and extraction organs. In our experiment on marbled crayfish Procambarus virginalis (Lyko, 2017) we studied the long-term effects of various concentrations of heavy metal ions on the physiological state and histostructure of tissues and organs. According to the results of research, it was found that among the studied heavy metals nickel ions influenced the weight indexes and mortality of crustaceans the most negatively. The results of morphometric studies on marbled crayfish indicate no significant differences between the control group and experimental one, but heavy metals influenced the form of the hepatopancerase lobes and the size of the lumen of the gland. Research on adipocytes of the connective tissue showed a significant difference between the size of cells under the influence of heavy metals. Dimensions of adipocytes fluctuated over a wide range from 144 μm² to 537 μm². In control group the adipocyte area was 406.96 μm². Experimental studies of hemolymph showed that, under the influence of lead ions, a significant 1.4 times increase was observed in the area of hemolymph cells; when manganese and nickel were added, moderate decrease was observed in cells. It was found that under the influence of nickel, the area of round hyalinocytes has reduced by 1.7 times.

Ograniczanie wyników

3 International Letters of Natural Sciences

3 Marenkov O.

2 Kovalchuk J.

2 Naboka A.

1 Dzhobolda B.

1 Fedonenko E.

1 Nesterenko O.

1 Prychepa M.

1 Shapovalenko Z.

2 2018

1 2016

Impact of low-molecule acidic peptides on growth and histological structure of inner organs of marbled crayfish Procambarus fallax (Hagen, 1870) F. virginalis

The influence of heavy metal ions on the viability and metabolic enzyme activity of the marbled crayfish Procambarus virginalis (Lyko, 2017)

Parameters of the histological adaptation of marmorkrebs Procambarus virginalis (Lyko, 2017) (Decapoda, Cambaridae) to manganese, nickel and lead ions pollution