Biological substantiation of works on artificial reproduction (stocking) of aquatic bioresources in the lower reaches of the Zaporozhian (Dnipro) Reservoir for the period 2021-2025

• Authors: Oleh Marenkov , Olena Izhboldina
• Languages of publication: EN

Abstracts

EN

The main purpose is developing effective measures for stocking the Zaporozhian (Dnipro) Reservoir with valuable fish species by studying the biological and fishery aspects of the formation and exploitation of their commercial stocks. During the work, we used the generalized results of integrated hydrobiological studies performed in 2021. Materials were collected in the Zaporozhian (Dnipro) Reservoir using standard fishing gears for fish sampling. Collection and processing of phyto‐, zooplankton and zoobenthos samples were carried out using conventional hydrobiological methods. Calculation of fish seed amounts was carried out using classical fishery and ichthyological methods. The status of fish feed supply of the Zaporozhian (Dnipro) Reservoir and its production potential was determined. Based on the obtained data, we calculated the potential productivity of the reservoir. It was found that the reservoir had certain feed supply reserves allowing large scale stocking with the juveniles of commercial fish species. The recommended amounts of reservoir stocking in 2021 were calculated as follows: 570 thousand 1+ Common carp; 1560 thousand 1+ Silver carp; 400 thousand 1+ Bighead carp; 220 thousand 1+ Grass carp. The presented results of the study of the state of fish feed supply in the reservoir allow stocking with the calculated amounts creating the bases of the rational use of aquatic bioresources with the preservation of the productive potential of commercial fish species exploited by commercial fishery in the Zaporozhian (Dnipro) Reservoir. Stocking the reservoir with fish allows improving the overall ecological status of the reservoir and increasing fish productivity under the conditions of commercial fishery exploitation.

Keywords

EN

Zaporozhian (Dnipro) Reservoir; bighead carp; carp; feed supply; fish; phytoplankton; silver carp; stocking; zooplankton

Discipline

• FISHERIES: FISHERIES

• Publisher: Scientific Publishing House „DARWIN”
• Journal: World Scientific News
• Year: 2022
• Volume: 164
• Pages: 122-138

Contributors

author

Oleh Marenkov

• Department of General Biology and Water Bioresources, Oles Honchar Dnipro National University, Gagarin av., 72, 49010 Dnipro, Ukraine

author

Olena Izhboldina

• Department of Animal Feeding and Breeding Technology, Dnipro State Agrarian and Economic University, S. Efremov Str. 25, 49600 Dnipro, Ukraine

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• Document Type: article