[The glycogen and lactate content of the white and red muscles in fishes with differing natural mobilities during experimental swimming].
Glycogen content of muscles has been investigated in moderately motile fishes during burst and cruising swimming, as well as in fast swimming fishes during burst swimming. It was shown that the intensity of glycogenolysis in muscles depends on the swimming regime and natural adaptation of fishes to physical loading. During burst swimming, significant decrease in glycogen content was found in both white (up to 70%) and red muscles (up to 50%) of fishes with moderate natural motility, in contrast to fast swimming fishes in which glycogen content decreases only in white muscles (by 30%). Cruising swimming in moderately motile fishes results in practically equal decrease of the glycogen content in both types of muscles (by 80-85%). The mentioned specificity of metabolism in fishes with moderate motility, as well as peculiarities of morphological organization of their skeletal muscles (the mass of red muscles amounts up to 5%), suggest that the main locomotor organ in these species is presented by white muscles.
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D000818:Animals; D005399:Fishes / Q000378:metabolism*; D006003:Glycogen / Q000032:analysis / Q000378:metabolism*; D007773:Lactates / Q000032:analysis / Q000378:metabolism*; D019344:Lactic Acid; D009132:Muscles / Q000737:chemistry / Q000378:metabolism*; D005082:Physical Exertion / Q000502:physiology*; D012621:Seasons; D013550:Swimming; D013997:Time Factors
D007773:Lactates; D019344:Lactic Acid; D006003:Glycogen
Soderzhanie glikogena i laktata v belykh i krasnykh myshtsakh ryb razlichnoĭ estestvennoĭ podvizhnosti pri éksperimental'nom plavanii.