Estimation of morphometric and fish-breeding biological indicators of Siberian sturgeon (Acipenser baerii Brandt) from the Lena River population, rearing in the conditions of the Far North
Journal Title: Вестник МГТУ - Year 2019, Vol 22, Issue 2
Abstract
Aquaculture is actively developing in the European North. This area is mainly based on using natural water bodies and the cultivation of cold-loving fish species. Sturgeon is a valuable and perspective object of warm-water aquaculture. Siberian sturgeon (Acipenser baerii Brandt), unlike other members of this family, can be grown in farms of various types, including cages established in natural water bodies with low water temperatures. This feature makes it a perspective aquaculture object of the Northern regions. The results of rearing Siberian sturgeon (Acipenser baerii Brandt) from Lena's River population in the Northern regions based on a fish farm in the Murmansk region have been presented. The rearing of two-year-olds and seven-year-olds of sturgeon in cages set up in Imandra Lake has shown a high survival rate and a good growth rate. The results of a comprehensive assessment of morphometric and exterior indicators of Siberian sturgeon have been estimated. The analysis of the measurements and calculated indices has shown that the males for reproduction have high values of fatness and wide-back coefficients. The optimal values of morphometric parameters are observed in the group of sturgeons with the maximum body weight (8.28 kg). The coefficients of fatness in seven-year-olds fish is 1.06, the wide-back coefficient is 17.32 indicating the high quality of future sturgeon for reproduction. It has been noted that the increasing of fatness and wide-back coefficient in this group of fish may appear due to pre-spawning changes occurring in the body of fish, and may indicate early maturation. The materials of studies lead to the conclusion that the use of sturgeon in aquaculture of the Northern regions is perspective. The research on rearing marketable Siberian sturgeon for manufacturing fish products and caviar in the North should be continued. The results indicate a great potential for using the Siberian sturgeon in aquaculture of the Northern regions including areas equated to the Far North.
Authors and Affiliations
A. Yu. Volkova, M. E. Huobonen
Keywords
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- EP ID EP597147
- DOI 10.21443/1560-9278-2019-22-2-243-248
- Views 123
- Downloads 0
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