Changes in serum glucose and lipids, and liver glycogen and phosphorylase during vitellogenesis in nature in the flounder (Platichtys flesus, L.).
1. During vitellogenesis in nature the concentration of phospholipid in serum of female flounders is correlated to the concentration of vitellogenin. 2. High levels of glucose and total lipid in blood occur before the onset of vitellogenesis. During early vitellogenesis the values decrease. At spawning they reach maximum levels. After spawning they decrease to low levels. 3. The concentration of glycogen in the liver oscillates during the period August to May. The phosphorylase activity shows peak activities with high concentrations of glycogen in the liver. There is no simple correlation between glycogen concentration in the liver and glucose concentration in the blood.
D000818:Animals; D001786:Blood Glucose / Q000378:metabolism*; D005412:Flatfishes / Q000378:metabolism*; D005432:Flounder / Q000378:metabolism*; D008055:Lipids / Q000097:blood*; D008099:Liver / Q000201:enzymology / Q000378:metabolism; D008112:Liver Glycogen / Q000032:analysis*; D010762:Phosphorylase a / Q000378:metabolism*; D006005:Phosphorylases / Q000378:metabolism*; D014818:Vitellogenesis
D001786:Blood Glucose; D008055:Lipids; D008112:Liver Glycogen; D010762:Phosphorylase a; D006005:Phosphorylases