The glycogen turnover rate in mackerel muscles

Turnover rate of the glycogen glucose in the lateral trunk muscles and the liver was investigated in ¹⁴C-glucose injected mackerels, Scomber scombrus. High values were recorded for the red-muscle glycogen; the values were about 40 times lower in the white muscle and the liver. Results are discussed in relation to the assumed metabolic function of the red muscle in fishes.