Abstract
Abstract The pearl oyster Pinctada martensii Dunker is the primary cultured species of marine pearls in southern China. To facilitate marker-assisted selection in genetic improvement of this species, twenty-nine novel polymorphic microsatellite markers were developed from twenty thousand expressed sequence tags (ESTs) of mantle and pearl sac of P. martensii, and were characterized in a wild Nanshan population and in a mapping CI5 family. We further analyzed the correlations between these makers and growth and nacreous secretion traits in the CI5 family and in a hatchery population. These 29 markers showed polymorphism in the wild population, with the number of alleles ranged from four to eighteen (mean 7.5 ± 3.3) per locus. Observed and expected heterozygosities ranged from 0.30 to 0.93 (mean 0.50 ± 0.24) and from 0.10 to 0.95 (mean 0.71 ± 0.14), respectively. Ten loci (34.5%) deviated significantly (P
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