Open AccessIMPACT OF ZOOPLANKTON DEVELOPMENT FACTORS ON GROWTH OF DIFFERENT AGE GROUPS OF RUSSIAN STURGEON CULTIVATED IN HATCHERY PONDS IN THE ALMATY REGION
Author(s) -
Nina Sergeevna Badryzlova,
Kuanysh Baibulatovich Isbekov,
Erbolat Latifovic Kadimov,
Askarbay Kadralyevich Kamelov,
Saya Kashkinbayevna Koyshibaeva,
Evgeniy Vyacheslavovich Kulikov,
Evgeniy Victorovich Fedorov
Publication year - 2018
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: rybnoe hozâjstvo
Language(s) - English
Resource type - Journals
eISSN - 2309-978X
pISSN - 2073-5529
DOI - 10.24143/2073-5529-2018-3-96-104
Subject(s) - zooplankton , hatchery , acipenser , sturgeon , biology , fishery , population , ecology , reproduction , fish <actinopterygii> , zoology , demography , sociology
The article studies the species composition of zooplankton in experimental hatchery ponds for breeding Russian sturgeon using the observations of 4-year data. The data onabundance and biological mass of zooplankton in experimental ponds used for breeding Russian sturgeon in the age 2-5 years has been presented. The dynamics of these parameters during the fish-breeding season is shown. The part of zooplankton organisms which can be considered as valuable feeding for Russian sturgeon (cladoceras) in relation to the total mass of zooplankton has been determined;their population and biological mass within a reproduction periodhave been presented. The prevalence of cladocerasin the number and biological mass above other zooplankton organisms in experimental ponds has been shown. The equations of regression of mass growth and zoological length of a body of 2-year, 3-year, 4-year and 5-year Russian sturgeon speciesgrown in experimental ponds have been presented. Great practical value have calculations of zooplankton biological mass which is optimal for breeding Russian sturgeon in the ponds of the Chilik hatchery of the Almaty region. There has been determined a connection between zooplankton biological mass and coefficients of mass and linear growth of different age groups of Russian sturgeon. There has been found correlation between the parameter of growth rate of zoological length of a body and the mean biological mass of zooplankton; weak correlative relation was observed between the growth parameter in the equation of weight growth of age groups of Russian sturgeon (3-year, 4-year and 5-year old species) grown in ponds, and average biological mass of zooplankton in these ponds. The recommendations on optimization of growing zooplankton in ponds of carp hatcheries used for breeding Russian sturgeon in order to raise their feeding status have been given.