Izvorni znanstveni članak
https://doi.org/10.2478/cjf-2019-0007
THEORETICAL ESTIMATE OF ENERGY BALANCE AND NUTRITIONAL NEEDS OF THE POPULATION OF RUSSIAN STURGEON Acipenser gueldenstaedtii IN THE CASPIAN SEA
Leonid Alexandrovich Zykov
; Faculty of Geology & Geography/Innovative Natural Institute, Astrakhan State University, Shaumyana Str. 1, Astrakhan, Russia
Botagoz Murasovna Nasibulina
; Faculty of Geology & Geography/Innovative Natural Institute, Astrakhan State University, Shaumyana Str. 1, Astrakhan, Russia
Tatyana Fedorovna Kurochkina
; Faculty of Geology & Geography/Innovative Natural Institute, Astrakhan State University, Shaumyana Str. 1, Astrakhan, Russia
Attaala Muhaysin Ali
; Faculty of Environmental Sciences and Marine Biology, Hadhramout University, Mukalla, Yemen
Nikolai Nikolaevich Popov
; Kazakh Fisheries Research Institute, Atyrau, Republic of Kazakhstan
Shalgymbaeva Muhametkalievna Saule
; Faculty of Biology and Biotechnology/ Kazakhstan National University named after Al-Farabi, Almaty, Republic of Kazakhstan
Sažetak
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.
Ključne riječi
Sturgeon; Population; Ration; Biomass; Mortality; Acipenser gueldenstaedtii
Hrčak ID:
221110
URI
Datum izdavanja:
16.6.2019.
Posjeta: 1.569 *