Correlation Between the Activity of Enzymes Involved in Energy and Carbohydrate Metabolism with the Size and Weight Parameters of Some Coregonidae and Salmonidae Fish
O. V. MESHCHERYAKOVA, M. V. CHUROVA, N. N. NEMOVA
Institute of Biology of Karelian Research Centre, RAS, 185910, Petrozavodsk, Pushkinskaya str., 11
Keywords: рыбы, длина и масса, энергетический обмен, углеводный обмен, ферменты, экспрессия миозина, РНК/ДНК, лосось, сиг, ряпушка, радужная форель, fish, growth parameters (length and weight), energy and carbohydrate metabolism, enzymes, myosin expression, RNA/DNA, whitefish, salmon, rainbow trout
Abstract
The correlation between the energy and carbohydrate metabolism rate with the length and weight of salmon ( Salmo salar L.) and whitefish ( Coregonus lavaretus L., C. albula L.) studied in nature, and farmed rainbow trout ( Parasalmo mykiss Walb.) was investigated. The results of the study showed that the largest and fastest-growing fish had high activity of enzymes involved in aerobic energy metabolism (cytochrome c -oxidase, malate dehydrogenase) and anаerobic metabolism (lactate dehydrogenase in muscles, 1-glycerophosphate and glucose-6-phosphate in liver). Age-related changes of the investigated parameters were caused by general reduction of aerobic metabolism rate and oxygen consumption during ontogenesis, increased lipid metabolism and the amount of stored substances. It was also shown that pubescent male and female whitefish (4+ and 5+) had differences in the correlation between enzyme activity of cytochrome c -oxidase 1-glycerophosphate and glucose-6-phosphate dehydrogenase and the length and weight of individuals.
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