<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Individual and group annual rations of Russian sturgeon <italic>Acipenser gueldenstaedtii</italic> are calculated on the basis of models describing the energy balance and dynamics of the number of fish generations with natural mortality depending on age. The structure of the energy balance and its separate components were studied. It is shown that the greatest amount of energy of consumed food by the population is spent on energy process. Individual rations of Russian sturgeon increase with age, whereas group rations decrease. The received results can be used to theoretically estimate the volumes of artificial and natural reproduction that provides the formation of stocks of Russian sturgeon in accordance with the forage productivity of the Caspian Sea.</p></abstract>

Individual and group annual rations of Russian sturgeon Acipenser gueldenstaedtii are calculated on the basis of models describing the energy balance and dynamics of the number of fish generations with natural mortality depending on age. The structure of the energy balance and its separate components were studied. It is shown that the greatest amount of energy of consumed food by the population is spent on energy process. Individual rations of Russian sturgeon increase with age, whereas group rations decrease. The received results can be used to theoretically estimate the volumes of artificial and natural reproduction that provides the formation of stocks of Russian sturgeon in accordance with the forage productivity of the Caspian Sea.

Theoretical Estimate of Energy Balance and Nutritional Needs of the Population of Russian Sturgeon <italic>Acipenser gueldenstaedtii</italic> in the Caspian Sea

Faculty of Geology & Geography/Innovative Natural Institute

Faculty of Environmental Sciences and Marine Biology

Kazakhstan National University named after Al-Farabi

Croatian Journal of Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Theoretical Estimate of Energy Balance and Nutritional Needs of the Population of Russian Sturgeon  in the Caspian Sea

Individual and group annual rations of Russian sturgeon Acipenser gueldenstaedtii are calculated on the basis of models describing the energy balance and...

Theoretical Estimate of Energy Balance and Nutritional Needs of the Population of Russian Sturgeon Acipenser gueldenstaedtii in the Caspian Sea

Published Online: Jul 02, 2019

Page range: 63 - 76

Received: Jan 07, 2018

Accepted: Feb 05, 2019

DOI: https://doi.org/10.2478/cjf-2019-0007

Keywords
Sturgeon, Population, Ration, Biomass, Mortality

© 2019 Leonid Alexandrovich Zykov et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Theoretical Estimate of Energy Balance and Nutritional Needs of the Population of Russian Sturgeon Acipenser gueldenstaedtii in the Caspian Sea

Published Online: Jul 02, 2019

Page range: 63 - 76

Received: Jan 07, 2018

Accepted: Feb 05, 2019

DOI: https://doi.org/10.2478/cjf-2019-0007

KeywordsSturgeon, Population, Ration, Biomass, Mortality

© 2019 Leonid Alexandrovich Zykov et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Sturgeon, Population, Ration, Biomass, Mortality