COMMERCIAL AND BIOLOGICAL FEATURES OF THE FORMATION OF PIKE STOCKS (Esox lucius L) IN THE KIGASH RIVER

The work analyzes the size-age, sexual structure and dynamics of the pike population. It was revealed that the structure of fishing catches of pike in the river Kigash included several generations with different dynamics of numbers. It is shown that the main group of spawning fish were young individuals 3-4 years old. At the same time, the proportion of fish older than the age groups has increased. It is shown that the largest catches of pike were in the spring, when fishing focused on pretrust and spawning migrations. In the early years and subsequent years (2010-2019), catches did not exceed 400 kg except in 2015 when maximum catches reached up to 1 ton. It has been determined that the scale of natural reproduction allows to replenish the stocks of these fish species. Fishing is seized such types of fish as: vobla, zander, sazan, jellyfish, som, pike, bream, carp, perch, geese and lint. Currently, fishing in the water system of the Kygash river is based on four species of fish: vobla, som bream and carp. In terms of the number of catches pike takes 5th place.It is known that the modern spawning fund of the KygachRiver is 70,000. Ha. Many channels of sleeves and eers are places of spawning for pike. The effectiveness of pike reproduction depends on its size on spawning grounds and less on the hydrological regime, as the spawning of the pike begins before the flood and the impact is having a rise and fall in water level.

1. Chýgýnova N.I. Rýkovodstvo po ızýchenııý vozrasta ı rosta ryb. - M.: Izd-vo AN SSSR, 1952. – 163 s

2. Pravdın N.F. Rýkovodstvo po ızýchenııý ryb. M.:Pıshevaıa promyshlennost,1966. 376 s.

3. Kazancheev E.N. Ryby Kaspııskogo morıa (opredelıtel). -M .: Legkaıa ı pıevaıa promyshlennost, 1981. - S.99.

4. Belıaeva V.N., Ivanov V.P., Zılanov V.K. Naýchnye osnovy ýstoıchıvogo rybolovstva ı regıonalnogo raspredelenııa promyslovyh obektov Kaspııskogo morıa. M.: VNIRO, 1998. – 167 s.

5. Mıtrofanov V.P., Dýkravets G.M., Peserıdı N.E.. Ryby Kazahstana. Izd. «Naýka» Kazahskoı SSR, 1986.t 1 str. S.219.

6. Bokova E.B., Djýnýsova G.G, Bektemırov J. Sostoıanıe estestvennogo vosproızvodstva polýprohodnyh vıdov ryb v ýslovııah ızmenenııa gıdrologıcheskogo rejıma r.Jaıyk». Vestnık. AtyraýskııGosýdarstvennyı ýnıversıtet. Atyraý, 2019. S 118.

7. Bokova E.B. Vıdovoe raznoobrazıe molodı polýprohodnyh vıdov ryb v Jaıyk-Kaspııskom basseıne. Vestnık. Atyraýskıı gosýdarstvennyı ýnıversıtet. Atyraý, 2019. S.105.