Vitellogenin, lipid and carbohydrate metabolism during vitellogenesis and pregnancy, and after hormonal induction in the blenny Zoarces viviparus (L.).
1. Ovarian vitellogenic growth in Zoarces viviparus lasts about 2 months. Vitellogenesis is immediately followed by ovulation, fertilization and a pregnancy period of 4 months. Vitellogenin is observed in the blood during vitellogenesis, but declines during the first month of pregnancy. 2. The largest amount of liver lipid is found before vitellogenesis is initiated. During pregnancy the liver is depleted of lipid and glycogen, and total lipid and phospholipid is accumulating in the blood. 3. Estradiol treatment during pregnancy results in a dose-dependent increase in vitellogenin and lipids of the blood. 4. In late pregnancy, birth can be provoked with progesterone alone, or with combined progesterone and estradiol treatment.
D000818:Animals; D050260:Carbohydrate Metabolism; D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D005399:Fishes / Q000502:physiology*; D050356:Lipid Metabolism; D008099:Liver / Q000187:drug effects / Q000378:metabolism*; D011374:Progesterone / Q000494:pharmacology*; D012016:Reference Values; D012098:Reproduction; D014819:Vitellogenins / Q000378:metabolism*
D014819:Vitellogenins; D011374:Progesterone; D004958:Estradiol