This study was supported by the 863 Program (2004AA603820 and 2006AA10A401);the National Natural Science Foundation (39900111 and 30771662).
The glycogen content and the activities of two key enzymes in glycogen metabolism, glycogen phosphorylase and gly- cogen synthetase, in the gonad of diploid and triploid Pacific oysters (Crassostrea gigas) were compar...