The effect of interstrain hybridization on the production performance in the Pacific oyster Crassostrea gigas

Three different culture stains of Crassostrea gigas, which were successively selected for two generations, were evaluated for growth and fitness traits, as well as for their reciprocal crosses, to determine if heterosis exists in growth and survival traits at different stages by rearing them under the same conditions. Our results could have significant implications for the development of oyster aquaculture.