Donor-oyster derived heritability estimates and the effect of genotype × environment interaction on the production of pearl quality traits in the silver-lip pearl oyster, Pinctada maxima

► We estimate the heritability, genetic correlations and G × E in pearl quality traits ► Pearl size, colour, lustre, complexion had low-moderate heritability ► Pearl shape was found to have low heritability ► G × E effects were present for some traits ► First estimation of genetic parameters for pearl oysters