Thi Nhu Phuong

Abstract The Portuguese oyster, Crassostrea angulata, is an important aquaculture bivalve species in Asia, where it is native. This study was carried out to estimate genetic parameters for shell growth and survival over six generations of selection based on harvest whole weight. The phenotypic measurements including shell height and length, and survival rate at days 5, 25, and 150 were collected from the fourth to sixth generations.

1 Introduction The global production of marine bivalves for human consumption is more than 15 million tonnes per year, and represents about 14% of the total marine production in the world (Wijsman et al., 2018). Before 2008, mollusc production in Vietnam was dominated by clams (Meretrix meretrix and M. lyrata) with seed collected from the wild, and small numbers of oyster spat were collected from the wild because of the unavailability of seed production technology.