Pacific oyster( Crassostrea gigas) are commercially important marine species,and their aquaculture production is very high in China and around the world.In order to explore the genetic diversity of pacific oysters along the Yellow Sea and Bohai Sea in Liaoning Province,the genetic structure and genetic diversity were analyzed by Genotyping-by-sequencing( GBS) with samples from the Bohai Sea( Cg-B) and Yellow Sea( Cg-H) populations The results showed that the average observed heterozygosities( Ho) of Cg-B an...