CULTIVATION OF EUROPEAN PIKEPEARCH SANDER LUCIOPERCA (L.) IN A RECIRCULATING AQUATIC SYSTEM

Abstract

Over the past decades, aquaculture has become one of the fastest growing areas of food production and is playing an increasingly important role in the economic development of many countries [1].
In the Republic of Kazakhstan, European pike perch (Sander lucioperca, L.)) is of great commercial importance and is considered one of the main exported fish species.
Until recently, pikeperch rearing under closed water supply conditions (hereinafter referred to as RAS) was not carried out in our country.
The industrial methods of fish farming used are mainly aimed at obtaining viable juveniles [2, 3, 4]. There are some scientific studies that consider the issues of raising replacement broodstock in RAS [5].
Nature users and fish farmers in our country consider pikeperch as an object of fish farming, living in natural reservoirs, adapted to life in rivers, reservoirs and desalinated areas of the seas. In this regard, the main fishing for pikeperch is carried out in natural reservoirs.
The modern vision of fish farming and, in general, the development of aquaculture in the Republic of Kazakhstan comes down to the fact that there is a need for a completely new approach to fish farming using innovative technological processes. In the post-Soviet period, fish breeding scientists [6,7] carried out work to develop biotechnology for growing pikeperch in ponds.
The novelty of scientific research was a comprehensive study of the biology and adaptation of a new object of industrial fish farming, European pike perch (Sander lucioperca (L.)). The adaptation capabilities of the European pike perch (Sander lucioperca (L.)) to extreme factors of the aquatic environment have been determined: deficiency of oxygen dissolved in water, high and low concentrations of ions (pH), high concentrations of minerals.
The main goal of the research is to develop technological processes for the maintenance and reproduction of European pikeperch (Sander lucioperca (L.)) in closed water supply systems.
The objectives of the research were to monitor the temperature and hydrochemical conditions of water in the recirculation system when growing pikeperch, as well as to study the growth rate of pike perch.
The results of scientific research will be recommended to fish farms using technologies for basin keeping pikeperch in RAS. Based on the research results, technological methods for growing European pikeperch (Sander lucioperca (L.)) in RAS will be determined.