Genomes of two Crassostrea oyster congeners: Crassostrea angulata and C. gigas

The Pacific oyster C. gigas (Thunberg, 1793) and Portuguese oyster C. angulata (Lamarck, 1819) are two dominant Crassostrea species. They are known as cupped oysters, naturally inhabiting the Northwest Pacific coasts. In China, C. gigas is found on the northern coast of the Yangtze Estuary, whereas C. angulata is found in the south of the Yangtze Estuary. In China and some recent studies, C. angulata was often called the Fujian oyster, and a recommendation for renaming it to C. gigas angulata has been proposed (Wang et al. 2010).