In the period from August 16 to August 24, 2022, employees of the «RPC of Fisheries» LLP, consisting of: Head of the lab. hydrobiology and hydroanalytics of Mazhibayeva Zh.O., researcher Kozhizhanova B.A. and head of the support station of Petropavlovsk Fefelov V.V. surveyed 7 reservoirs of the North Kazakhstan region, according to the calendar plan.

During the trip, the hydrological regime of the lakes was analyzed, water samples were taken for hydrochemical and hydrobiological studies. Samples of artemia crustaceans and their cysts were collected to study their microflora and physico-chemical composition.

The work was attended by the chief specialists of the department of the RSU «Esil inter-regional basin inspection of fisheries of the Committee of Fisheries of the Ministry of Fisheries of the Republic of Kazakhstan» Lopatsky A.L. and Ramazanova E. E.

These works were carried out within the framework of the projects of the Ministry of Education and Science of the Republic of Kazakhstan and STP.

The Black soldier fly (Hermetia illucens) is a large american fly from the family of soldier flies (Stratiomyidae), the natural distribution area of North and South America. And this object is of great scientific and practical interest.

The content of crude protein in them is from 30 to 40%, lipids are 20-40%, and due to their enriched biochemical composition, larvae are used as a feed additive for juvenile fish. The nutritional value of the larvae depends on the substrate on which they are grown.

Also, larvae are natural converters of organic substrates, which are a good source of protein and fat.

The insect gained wide popularity due to the highly efficient bioconversion of various solid organic waste, as well as the high nutritional value of larvae with the possibility of use in feeding agricultural animals.

It is known that larvae are able to change the microflora of manure, potentially reducing the number of harmful bacteria. They can also be included in the chain for processing various waste:

— food waste,

— droppings of birds and animals, as a result, the resulting compost can be applied as a fertilizer for growing plants.

And in our country, as well as all over the world, it is very important to combat waste by methods where fly larvae can act as a priority lever to reduce the impact of pollutants on the environment.

Scientific staff of «RPC of Fisheries» LLP are working on the cultivation of the larvae of black soldier fly on various substrates and their further use as fish feed, optimal breeding methods are determined both from the economic and from the fish farming side, based on the results, recommendations will be given applicable to the conditions of fish farms of the Republic of Kazakhstan.

The work is carried out within the framework of the Scientific and Technological Support for the integrated development of aquaculture in Kazakhstan through the development and implementation of innovative technologies and new fish farming facilities.

 

The senior researcher of the aquaculture laboratory of the head division of the Scientific and Production Center of Fisheries LLP, Bulavina N.B., together with the senior researcher of the Atyrau branch Demisinova G.T. and the chief fish breeder of the Ural-Atyrau Sturgeon Plant, Zulkasheva M.A., carried out work on the basis of the plant to develop methods for monitoring the quality of the produced juvenile sturgeon fish.

In the course of the work, 2 methods were worked out for evaluating the produced juvenile sturgeon fish:

• 1. Teratological analysis;
• 2. Assessment of adaptive qualities of juveniles by reactions of the central nervous system.

When working out the teratological analysis of juvenile fish, the examination was carried out for the following indicators:

• — body shape abnormalities (head shape change, body curvature, underdevelopment/presence of additional fins);
• — anomalies of the structure of external organs (absence of eyes, curvature of the snout, etc.).

The percentage of occurrence of anomalies was low, the method of inspection used is not complicated, this allows us to recommend this technique for use at a sturgeon plant, since it is possible to evaluate the entire batch of fish being stocked from a sample.

When working out the method for assessing the adaptive qualities of juveniles by the reactions of the central nervous system (the «open field» test), the severity of the reaction of juveniles from the test sample to various stimuli (light and sound of different frequencies) was determined.

The application of the method makes it possible to assess the level of motor activity of juveniles, their reactivity to external stimuli (visual, tactile, hydrodynamic), their suitability for survival in the natural environment.

This method revealed high adaptive qualities of juvenile sturgeon fish produced from the Ural-Atyrau Sturgeon Plant.

These works were carried out within the framework of the PCF program: «Scientific and technological support for the integrated development of aquaculture in Kazakhstan through the development and implementation of innovative technologies and new fish farming facilities».

On August 18-19, 2022, within the framework of a project with JSC «Science Foundation» on commercialization of «Artificial reproduction and cultivation of carp planting material for the purpose of its further implementation for the stocking of natural reservoirs of the Republic of Kazakhstan» by employees of LLP «FishRPC» — Head of the aquaculture laboratory Abilov B.I., research associates Khalelov A.T., Bulavin E.F. and laboratory assistant Alishov A.K. a control catch of outgrowth ponds was made. According to the results of the wreckage, the maximum weight of carp fingerlings was 67.9 grams. The average weight on the ponds was 20-22 grams.

Earlier, for the incubation campaign (April-May), all the necessary conditions were prepared for obtaining a live resistant carp planting material. It is worth noting that the grown carp fingerlings were obtained from wild producers from Lake Alakol.

According to the calendar plan, in the period from August 7 to August 13, 2022, the head of the laboratory of Hydrobiology and hydroanalytics, Zh.O. Mazhibayeva, the head of the expedition team, Minat A., together with the head of the laboratory of ichthyology, Sansyzbaev E.T., made a trip to the bitter-salty Paradise lakes of the Aksu district of the Almaty region in order to collect material for data analysis in the seasonal aspect.

During the business trip, the final survey was carried out for hydrochemical, hydrobiological (phytoplankton, zooplankton, zoobenthos), genetic, microbiological and biochemical studies.

Research works are carried out within the framework of the PCF project «Assessment of production, genetic, chemical and microbiological parameters for the development of recommendations for the certification of artemia cysts in the reservoirs of Kazakhstan» of the budget program «Comprehensive assessment of the state of fish resources and other aquatic organisms of the main fishing reservoirs of Kazakhstan and the development of scientifically sound recommendations for their sustainable use»

August 12 – International Day of the Caspian Sea❗️

The holiday begins its history on August 12, 2006, when the Framework Convention for the Protection of the Caspian Sea and the Environment from Pollution, signed in Tehran, came into force. Within the frame of this Convention, the Republic of Kazakhstan takes the necessary measures to preserve the biological resources of the sea. This important date is celebrated today in five Caspian states at once: Azerbaijan, Iran, Kazakhstan, Russia and Turkmenistan. «RPC of Fisheries» LLP congratulates scientists, ecologists and all those who are engaged in the exploration of the Caspian Sea on the holiday!

The employees of the laboratory of hydrobiology and hydroanalysts of the main unit of the «RPC of Fisheries» LLP keep watching the polychaete Hediste diversicolor (O.F. Müller, 1776).

The joint maintenance of oligochaetes and chironomids with polychaetes showed that the khedista, being a polyphage, prefers live food when given a choice. Pronounced selectivity was noted: first of all, small oligochaetes are eaten away. In the absence of oligochaetes, larger and tougher chironomid larvae are actively consumed, which may pose a threat of undermining the native fauna of chironomid-oligochaete type water reservoirs. Larvae of blood-sucking mosquitoes are eaten only by large polychaetes in the absence of other food.

The work is carried out within the the project «Development of scientifically based recommendations for increasing the productivity of fishery reservoirs through the introduction and reintroduction of fish and hydrobionts — components of the fodder base of fish».

From August 6 to 8, 2022, an inspection of the implementation of research and development work was carried out at the fish breeding sector of National JSC «KATU named after Seifullin» under the section of the PCF project “Development and implementation of industrial technologies for growing Australian red claw crayfish in RAS”.  

An experiment is underway at the site to determine the effectiveness of the use of domestically produced specialized compound feed of «KazNIIPPP» LLP and its effect on the fishery biological indicators of australian red claw crayfish. The ongoing research on the project section match to those planned in the calendar plan for 2022.

In the monitoring and experimental work are participated: deputy CEO of the «RPC of Fisheries» LLP Asylbekova S. Zh., director of the Northern Branch of the «RPC of Fisheries» LLP Shutkaraev A.V., senior teacher Kuanchaleev Zh.B., and assistant Musin S.E of the department of of hunting and fishery of the JSC «KATU named after S. Seifullin».

From July 15 to 29, the expedition team carried out research on the reservoirs of the Alakol lake system consisting of: ichthyologists — senior researcher Danko E.K., head of the expedition team Karlybayuly S., junior researcher Pangereeva B., hydrobiologists — head of the expedition team Minat A. and senior laboratory assistant Zamandinova Z. on the topic “Determination of fish productivity of fishery reservoirs and / or their sectors, development of biological justifications for the maximum allowable catches of fish and other aquatic animals, the regime and regulation of fishing in fishery reservoirs of international, republican significance and reservoirs of protected areas of the Balkhash-Alakol basin”, section: Alakol lake system. 

During the business trip, ichthyological, hydrobiological and hydrological material was collected from the monitoring points of the fishing areas (western and southern) of Lake Alakol and lake Koshkarkol. An echo sounding survey was carried out to record for the number of fish in the southern and western waters of Lake Alakol. Control fishing was also carried out on lake Koshkarkol. Currently, research on control fishing continues on the lake. Sasykkol and in the eastern region of Lake Alakol. In addition, studies were carried out on 6 mountain reservoirs of the Alakol district of local importance to assess their suitability for fisheries: Maikankol, Abzhanov, Zhazylbekov, Satybay, Kolesnikov and Daulet. The work was also attended by the head of the Usharal inspection Zhumankulov K..

According to the Protocol of the meeting at the ministry of ecology, geology and natural resources to discuss problematic issues of fisheries dated March 19, 2022, from August 2 to 8, 2022, the employees of the Balkhash branch of «RPC of Fisheries» LLP continue research on Lake Balkhash as part of the control fishing to determine the similarities and differences in catchability and selectivity of traditional (kapron) fishnets and fishing gear made of synthetic monofilaments and monofibers.