Ecological status of fishery ponds for growing populations of Antoninsko-Zozulinetsky scaly carp

Abstract

The results of researches on the study of ecological conditions in growing the population of different age groups of carp of Antonino-Zozulenets breed in the conditions of fisheries «Stara Sinyava», Private Joint Stock Company «Khmelnytskrybhosp» are presented. Generalization of the chemical composition of water is made. The chemical composition of water is constantly changing: water sources of water supply, precipitation, sewage, water flow from near adjacent territories, groundwater filtration, mixing of water from different depths, uneven heating of the sun by water, evaporation etc. Atmospheric and river waters also affect the quality of pond water, diluting it, as well as the biochemical processes occurring in reservoirs. The development of the natural forage base of fishery ponds, the quantitative development of plant plankton both in the cultivation and in the foraging ponds was characterized by low rates. One of the reasons for the low development of phytoplankton in the studied joints is the overgrowth of their higher aquatic vegetation. It is known that higher aquatic vegetation is the main competitor of phytoplankton in the consumption of biogenic elements, inhibits the development of the latter, due to the allocation of metabolites, and changes the conditions of vegetation of the phytoplankton. It was established that the ecological conditions of the cultivation and feeding of the fish farm «Stara Sinyava» were generally satisfactory. The hydrochemical regime of the fish ponds was satisfactory and suitable for fish farming. The state of the natural fodder base of the fishery ponds was low in intensity of development of phytoplankton (0.96–4.23 mg/dm3), and in intensity of development of zooplankton (3.22–20.29 g/m3) and zoobenthos (2.45–7.98 g/m2) sufficient to meet the nutritional requirements of young and older carp groups.