Isolation and characterization of fourteen novel microsatellite loci in the Hong Kong oyster, Crassostrea hongkongensis
2009
Xia, Jianjun | He, Xiaocui | Yu, Ziniu
Fourteen polymorphic microsatellite markers were isolated from the Hong Kong oyster, Crassostrea hongkongensis, with a partial genomic library enriched for tandem repeat sequences of (CA)₁₂, (GA)₁₂, (ATG)₆ and (TAGA)₄. Polymorphism of these loci was assessed in a sample of 48 wild unrelated individuals. The average allelic number of these polymorphic loci was 6.36 per locus, with a range of 4-16. The observed and expected heterozygosity varied from 0.208 to 0.729 (averaging 0.502) and from 0.193 to 0.789 (averaging 0.615), respectively. After Bonferroni correction (P > 0.0036), 11 of the 14 loci accorded with Hardy-Weinberg equilibrium, and the rest three were detected significant departure from HWE. Additionally, two loci (Ch103 and Ch104) showed significant linkage disequilibrium (P < 0.01). This is the first set of microsatellite loci developed in this species and would be useful for studies of population genetics, stock management and other relevant research in C. hongkongensis.
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