Abstract
Sixty novel simple sequence repeat (SSR) markers were developed from expressed sequence tags (EST) of half-smooth tongue sole Cynoglossus semilaevis exploited in the laboratory. The number of alleles, observed and expected heterozygosity per locus ranged from two to 16, from 0·0833 to 1·0000 and from 0·0816 to 0·913, respectively. Of these SSRs, 20 had significant homology to known genes by BLASTx (basic local alignment search tool x) search. For cross-species amplification, there are 53 positive amplifications in Japanese flounder Paralichthys olivaceus with 12 polymorphic loci and 51 positive amplifications in Senegalese sole Solea senegalensis with 11 polymorphic loci. These new EST-SSR markers will be useful for genetic studies and genome mapping of C. semilaevis and its closely related fishes.
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