Abstract
The pearl oyster Pinctada fucata is an important commercial marine shellfish that is cultured for producing saltwater pearls. In this study, 468 single nucleotide polymorphisms (SNPs) were screened from P. fucata transcriptome data, and 119 polymorphic SNPs were successfully isolated by a two-step small-amplicon high-resolution melting assay. Of these, 88 were annotated with BLAST in the Nr database and 90 were in the open reading frame, including 16 non-synonymous SNPs and 74 synonymous SNPs; 12 SNPs were in the 3'-untranslated region (UTR) and 1 was in the 5'-UTR. Twenty-five SNPs were randomly chosen to test the genetic diversity of 40 wild individuals from Liusha Bay, China. All of the loci had two alleles. The observed and expected heterozygosities ranged from 0.0417 to 0.6042 and from 0.2945 to 0.5053, respectively. Minor allele frequencies ranged from 0.1771 to 0.5000, and the polymorphism information content ranged from 0.2516 to 0.3750. These novel SNP markers can contribute to P. fucata genetics and breeding studies.
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