Journal
GENOME
Volume 50, Issue 3, Pages 329-332Publisher
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/G06-154
Keywords
microsatellites; enriched libraries; polymorphism; Scophthalmus maximus; pleuronectiformes
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The turbot is a flatfish species of great relevance to marine aquaculture in Europe. Only a limited number of microsatellites have been isolated to date in this species. To increase the number of potentially useful mapping markers, we screened simple sequence repeat (SSR) - enriched genomic libraries obtained from several di-, tri-, and tetranucleotide tandem repeat motifs. A total of 248 new polymorphic microsatellites were successfully optimized. The efficiency of the protocol applied (6.4%) was higher than that in other studies of fish that used the same method. Dinucleotide and perfect microsatellites were predominant in this species; the (AC),, motif was the most frequent class of repeat. Polymorphism and structural properties at these loci, together with 30 variable loci previously reported in turbot, were evaluated in 6 wild individuals. The number of alleles per locus ranged from 2 to 10, with an average of 4.046. The microsatellite markers characterized in this study will contribute to the development of the turbot genetic map, which can be used for quantitative trait locus (QTL) identification, marker-assisted selection programs, and other applications to improve its culture.
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