Search results for: Oleh Marenkov

Items from 1 to 12 out of 12 results

article

Organic permaculture: cultivation of Eisenia andrei earthworms for use as feed for aquatic organisms

Yevhen Selivanov, Oleh Marenkov

World Scientific News > 2021 > 152 > 39-54

This paper examines the biological features and taxonomic status of the red wiggler worm Eisenia andrei as presented in the relevant literature. We evaluate the economic feasibility of cultivating this species as feed for aquaculture purposes and discuss conventional cultivation methods.

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Biotechnological bases of organization of industrial crayfish farm in Ukraine

Oleh Marenkov

World News of Natural Sciences > 2020 > 28 > 1-12

Crayfish are valuable invertebrates that are constantly in great demand in all corners of the Earth. Breeding crayfish is not only large-scale production as it can also be arranged in small volumes using pools and installations of closed water supply. Cultivation of crayfish generates profit after a certain period of time, if all biotechnological norms of cultivation are considered. Cultivation of...

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The zoobenthos structure in the Dniprovske (Zaporizke) reservoir, Ukraine

Olexandr Petrovsky, Olena Fedonenko, Oleh Marenkov

World News of Natural Sciences > 2020 > 32 > 87-98

The article presents data on monitoring the species composition of the zoobenthos of the Dnipro reservoir during 2015-2018. It has been found that a biocenosis of Dreissena (Dreissena bugensis, D polymorpha) was formed on the pass of the upper part of the reservoir on slightly silty sand. The bottom layers of water have been found to be slightly exposed to climatic factors due to slow flow; thus seasonal...

article

Histogenesis and morphological characteristics of hyaline cartilage of the pumpkinseed juveniles Lepomis gibbosus (Linnaeus, 1758) (Actinopterygii, Centrarchidae)

Oleh Marenkov, Oleh Nesterenko

World Scientific News > 2019 > 138 > 2 > 277-284

The article presents the structure feature of the hyaline cartilage of two-month-old fry of the pumpkinseed Lepomis gibbosus (Linnaeus, 1758). It is found that 4 cm long fry have cartilaginous skeleton, in which the bony tissue is replacing cartilage one. It is noted that the chondroblasts have a flattened or oval shape and reach a size of 77.10 ± 25.55 μm 2. Eventually, the growth of the cytoplasm...

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Estimation of physiological and biological indices and consequences of biological invasion of the pumpkinseed Lepomis gibbosus (Linnaeus, 1758) in the Zaporizke Reservoir, Ukraine

Oleh Marenkov, Oleh Nesterenko

World Scientific News > 2018 > 95 > 21-51

Due to the emergence of new species in ichthyofauna of the Zaporizke reservoir, there was a need to study their biology, ecology and patterns of their distribution. Biological invasions of new species of fish can have diverse effects both within aboriginal populations and within the entire ecosystem. The pumpkinseed Lepomis gibbosus (Linnaeus, 1758) is one of the most common alien species in the Zaporizke...

article

Laboratory Manual on General and Special Ichthyology

Oleh Marenkov

World News of Natural Sciences > 2018 > 18 > 1 > 1-51

The manual presents the main methods for studying fish. The general features of the external structure of fish are described: the shape of the body, external organs, the structure and functions of the fins, the types of scales, and the structure of the lateral line. The indicators of morphometric studies of fish with the use of meristic and plastic features according to the classical schemes of measuring...

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Histology of marbled crayfish Procambarus virginalis (Lyko, 2017): annotated atlas

Oleh Marenkov, Tetiana Lykholat, Viktoriia Kurchenko, Oleh Nesterenko

World News of Natural Sciences > 2018 > 21 > 141-153

The educational publication contains microphotographs and description of histological preparations of the structure of marbled crayfish. The above materials may be used both for carrying out laboratory work on disciplines "Histology", "Cytology", "Cell Biology", "Special Practice", and for self-study of relevant educational topics. Designed for specialists in...

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Fishery and environmental situation assessment of water bodies in the Dnipropetrovsk region of Ukraine

Olena Fedonenko, Volodymyr Yakovenko, Tamila Ananieva, Tetiana Sharamok, more

World Scientific News > 2018 > 92 > 1 > 1-138

The monograph presents the results of a long-term research of water ponds biocenosis in the southeastern part of Ukraine. The Department of General Biology and Aquatic Bioresources at Oles Honchar Dnipro National University specialists carried out all the researches. The paper provides a detailed analysis of hydroecological situation in the large and small water bodies, which are used for fishery...

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Annotated histological atlas (normal histology)

Oleh Marenkov, Elena Fedonenko, Tamila Ananieva, Daria Tarnopolskaya

World Scientific News > 2017 > 90 > 101-126

The Annotated Atlas contains original author’s microphotos of histological samples for the light microscopy analysis, those are necessary for study according to The Educational Standard of High School in Ukraine. Photos of preparations were made with the “Sciencelab T500 5.17 M” digital camera, which was connected to the “Biolam 70” microscope. All required histological specimens for obligatory program...

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Parameters of the histological adaptation of Marmorkrebs Procambarus fallax f. virginal (Decapoda, Cambaridae) to zinc and cadmium ions pollution

Oleh Marenkov, Julia Kovalchuk, Zoya Shapovalenko, Olexandra Naboka, more

World Scientific News > 2017 > 90 > 189-202

Due to the fact that marbled crayfish (Marmorkrebs) 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. The article presents the results...

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Basics of Aquaculture and Hydrobiotechnology

Olena Fedonenko, Oleh Marenkov, Tetiana Sharamok, Natalia Kolesnik, more

World Scientific News > 2017 > 88 > 1 > 1-57

The manual sets out the necessary material concerning the cultivation of certain objects of aquaculture that can be used as feed additives. The manual is intended for practical work on aquaculture, as well as for independent work and self-study students. The material is designed for students of biological faculties of full-time and correspondence forms of training.

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Ways of optimization of breeding conditions of fish by using artificial spawning grounds

Oleh Marenkov, Olena Fedonenko

World Scientific News > 2016 > 49 > 1 > 1-58

The monograph presents ways of optimization of the reproduction of fish fauna due to the use of artificial spawning nests. There is classification of fish by nature, terms and conditions of the spawning course. Spawning nests divided according to the nature of fish spawning. There is given characteristic with describing and depicting of spawning grounds designs. It is indicated what species of fish...

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Keywords

AQUACULTURE (3)
FISH (2)
HEAVY METALS (2)
HEPATOPANCREAS (2)
HISTOLOGY (2)
LEPOMIS GIBBOSUS (2)
MARBLED CRAYFISH (2)
PUMPKINSEED (2)
ZAPORIZKE RESERVOIR (2)
2010 (1)
ALGAE (1)
ANATOMY (1)
APPLE SNAILS (1)
ARTIFICIAL SPAWNING GROUNDS (1)
BIOLOGICAL INVASION (1)
BIOTECHNOLOGY (1)
BLOOD (1)
BONE (1)
CALIFORNIAN RED WORM (1)
CARTILAGE (1)
CHONDROBLASTS (1)
CHONDROCYTES (1)
CONNECTIVE TISSUE (1)
CRAYFISH (1)
DNIPRO (1)
DNIPROVSKE RESERVOIR (1)
EISENIA ANDREI (1)
EISENIA FETIDA (1)
EPIZOOTICS (1)
ERYTHROCYTES (1)
FARMING (1)
FEED (1)
FINS (1)
FISH BIOCHEMISTRY (1)
FISH EGG (1)
FISH; SPAWNING; ARTIFICIAL SPAWNING GROUND; ARTIFICIAL REEFS; SPAWNING NESTS (1)
FRESHWATER PRAWN (1)
GLANDULAR EPITHELIUM (1)
GLANDULOCYTES (1)
GRAPE SNAIL (1)
HEMOLYMPH (1)
HYALINE CARTILAGE (1)
HYDROCHEMICAL REGIME (1)
ICHTHYOFAUNA (1)
ICHTHYOLOGY (1)
MARMORKREBS (1)
MORPHOLOGY (1)
MUSCLE (1)
NEMATODES (1)
NERVOUS TISSUE (1)
NUTRITION BASE (1)
PONDS (1)
PROCAMBARUS FALLAX F. VIRGINALIS MARTIN ET AL. (1)
PROCAMBARUS VIRGINALIS (1)
SCALES (1)
SMALL WATER BODIES (1)
SPECIES DIVERSITY (1)
SURFACE EPITHELIUM (1)
TISSUES OF INTERNAL ENVIRONMENT (1)
VERMICULTURE (1)
ZOOBENTHOS (1)
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