Causes of death of silver carp Hipophthalmichthys molitrix in the “Dnipro-Donbas” magistral channel and prevention measures Formation of soil fertility for different fertilizer systems in field crop rotation

Novitskyi, R. O.; Makhonina, A. V.; Kochet, V. M.; Khristov, O. O.; Hubanova, N. L.; Horchanok, Anna

doi:10.32819/2019.71018

Cited by 2 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the analysis of all obtained data, we believe that the lack of the required amount of products in the water body can cause starvation for all parts of the food chain, lead to disturbance of the functional properties of the «Dnipro-Donbas» canal and cause anthropogenic surface water pollution (Koval et al, 1987;Oksyiuk, 1990;Stepova & Roma, 2016;Novitskiy et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Zooplankton products on certain sections of the «Dnipro-Donbas» canal

Novitskyi¹,

Христов²,

Hubanova³

et al. 2020

TAVM

View full text Add to dashboard Cite

In May 2020 the quantitative and qualitative composition of zooplankton as a food item of aquatic bioresources was determined in the water area of the «Dnipro-Donbas» hydrotechnical canal. As a result of complex hydrobiological researches it was revealed that there are significant changes in the number of all groups of aquatic organisms, including zooplankton. 14 species of zooplankton were found. Taxonomic diversity is represented by three groups of Rotatoria, Cladocera, Copepoda. It was proved that climate change, wide fluctuations of water temperature have led to a decrease in the number and species diversity of zooplankton. The quantitative and qualitative composition of zooplankton is also affected by periodic pumping of water along the canal route. It was noted that planktonic organisms affect the level of eutrophication of the canal and the amount of oxygen in the aquatic environment; they form secondary products in the reservoir. It was established that the amount of 108 000 item/m 3 and zooplankton biomass of 781 mg/m 3 in the water area of different sections of the «Dnipro-Donbas» hydrotechnical canal are insufficient. When determining the groups of zooplankton, it was found that the roe of rotifers (Rotatoria) was the most numerous in the sampling sections, and in the area № 2 (Shulhivka Bridge area) in the spring it was completely absent. The maximum indicators of zooplankton number and biomass were observed in the section of the canal upper Shulhivka Bridge (59 000 item/m 3 , 506.87 mg/m 3 ). The area of the canal near Shulhivka Bridge was characterized by the smallest quantitative development of zooplankton species (8 000 items/m 3 , 53.7 mg/m 3 ). There were no rotifers in that area. Seasonal features of the frost-free and snowless winter of 2019-2020, warm spring of 2020 caused disbalance in the functioning of the aquatic ecosystem; it affected the formation of biological products of the canal and its consumption by the final link of trophic chains (fish).

show abstract

Section: Discussionmentioning

confidence: 99%

Zooplankton products on certain sections of the «Dnipro-Donbas» canal

Novitskyi¹,

Христов²,

Hubanova³

et al. 2020

TAVM

View full text Add to dashboard Cite

show abstract

“…Bilateral features were counted in units of common sunfish L. gibbosus and stone moroco P. parva, which are non-indigenous species of ichthyofauna, and now are naturalized in the resevoirs of Ukraine (Novitskiy et al, 2019). In addition, the deviation from the bilateral symmetry in the Ponto-Caspian species of the round goby N. melanostomus was investigated.…”

Section: Discussionmentioning

confidence: 99%

“…Using of the morphological approach in ichthyologic and ecological researches as the simplest and at the same time the most informative allows to analyse the unit variability of organisms within the conditions of anthropogenic pressure, to estimate their vitality, and to analyse the state of the natural environment. Invasive fish species, which today continue to cover new habitats, are favourable objects for assessing the status of reservoirs (McCallum et al, 2014;Novitskiy et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Fluctuating fish asymmetry in natural and artificial reservoirs of Dnipro region on example of invasion types

Horchanok¹

2019

TAVM

Self Cite

View full text Add to dashboard Cite

Researches of fluctuating asymmetry of the bilateral features of fish were conducted in 2018 on the natural reservoirs (the Samara River within Novomoskovsk and Pavlograd districts of Dnipropetrovsk region, the reservoirs of the Dnipro-Oril Nature Reserve). Insignificant deviations from the bilateral symmetry of external features in living organisms may indicate a decrease in the vitality of certain populations. Using of mass, widespread fish species as the test objects is the best way to detect the levels of fluctuating asymmetry. The fluctuating asymmetry of four bilateral features was estimated within 146 units of the common sunfish Lepomis gibbosus, the stone moroco of Pseudorasbora parva and the round goby Neogobius melanostomus in different habitat conditions, the stability of their life circle was evaluated. The number of rays in the interbranchial septum, the number of branching rays in the pectoral and abdominal fins, the number of scales in the lateral line were analysed. The variability of these features on the left and right sides of the fish was evaluated. The lowering of the natural fish populations vitality because of the influence of negative anthropogenic pressure is currently minor. The stability of fish development by the analysis of bilateral features is noted within normal limits of 1 point (Neogobius melanostomus from the reservoirs of the Dnipro-Oril Nature Reserve, Lepomis gibbosus and Pseudorasbora parva from the middle section of the Samara River) or deviates insignificantly from the statutory indicator in 2 points (Lepomis gibbosus from the lower section of the Samara River). Species of Neogobius melanostomus from the reservoirs of the Dnipro-Oril Nature Reserve show the lowest quantitative indices of the bilateral features asymmetry (0.17 of asymmetric detections per feature). This may demonstrate the absence of negative anthropogenic impact on ground fish within the particularly guarded water areas. The application of the analysis of the fluctuating fish asymmetry is the simplest and most accessible way of rapid testing of the water environment state, but complex laboratory studies, including molecular and biochemical ones, must be used to obtain a more accurate and reliable estimate.

show abstract

Causes of death of silver carp Hipophthalmichthys molitrix in the “Dnipro-Donbas” magistral channel and prevention measures Formation of soil fertility for different fertilizer systems in field crop rotation

Cited by 2 publications

References 11 publications

Zooplankton products on certain sections of the «Dnipro-Donbas» canal

Zooplankton products on certain sections of the «Dnipro-Donbas» canal

Fluctuating fish asymmetry in natural and artificial reservoirs of Dnipro region on example of invasion types

Contact Info

Product

Resources

About