Abstract
In this study, we developed 134 novel polymorphic polynucleotide-repeat microsatellite markers for silver carp (Hypophthalmichthys molitrix) and characterized 40 loci for polymorphism and genetic diversity in a test population. The number of alleles per locus ranged from 3 to 19 (mean 9.4), and the average observed and expected heterozygosities were 0.74-0.76, respectively. Thirty-five loci were highly informative (PIC > 0.5) in silver carp population. After Bonferroni adjustments, no pairs of loci showed evidence of significant linkage disequilibrium, and none of the loci significantly deviated from the Hardy-Weinberg equilibrium. All 134 silver carp microsatellite loci could be successfully amplified in bighead carp (Hypophthalmichthys nobilis) with 65 loci being polymorphic, indicating a high transferability of these microsatellites across species. This set of novel highly polymorphic polynucleotide-repeat microsatellites would be powerful tools for population and conservation genetics studies in silver carp and also in its closely-related bighead carp.
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