Vitellogenesis and Hepatic Metabolism in Flounder

摘要: Publisher Summary This chapter describes vitellogenesis and hepatic metabolism in flounder. It discusses a study on the changes biochemistry of liver taking place simultaneously with appearance blood plasma vitellogenin, which, female animals, preludes ovarian growth oocytes, or, male accumulates serum as result stimulation exogenous estrogen. Levels circulating vitellogenin were measured amount alkalilabile protein phosphorus serum. Serum was also analyzed for glucose, lipid, components. The DNA, RNA, protein, glycogen together some enzymes studied. Growth ovaries during expressed by gonadosomatic hepatosomatic indices. In flounder, vitellogenesis, lipophosphoprotein having molecular weight about 550,000 containing all alkali-labile is found to appear named can be induced normal estrogen treatment, which vitellogenic females enhances its synthesis. Analysis annual variations weight, RNA demonstrated hyperplasian growth, hypertrophy, elevated protein-synthetic capacity ratio RNA:DNA accumulation beginning prolonged period growth. serum, concentration phospholipid correlated vitellogenin. contrast total lipid decreases this but attain new peak value onset spawning. showed that process nature associated nucleic acid, carbohydrate metabolism, and, furthermore, these biochemical processes vitro