Journal
MARINE BIOTECHNOLOGY
Volume 6, Issue 5, Pages 446-452Publisher
SPRINGER
DOI: 10.1007/s10126-004-3045-x
Keywords
Mullus barbatus; microsatellites; Adratic Sea; genetic structure
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In order to study the genetic structure of the Adriatic shared stock of red mullet (Mullus barbatus), we developed a set of dinucleotide microsatellite markers. A dinucleotide-enriched genomic library was obtained, and 6 polymorphic dinucleotide loci were successfully optimized. The markets showed high expected heterozygosity (from 0.68 to 0.92) and allele number (from 12 to 33); thus they appear to be suitable for detecting genetic differences in the population of red mullet. Four Adriatic samples were subsequently analyzed for microsatellite variation, and the results showed subtle but statistically significant genetic differentiation, indicating that the Adriatic red mullet may group into local, genetically isolated populations. No correlation between geographic distance and genetic differentiation was observed. In addition, the evidence of recent bottlenecks in the Adriatic samples indicates that the observed population Subdivision might reflect random local allelic variations, generated by reproductive success, survival rates, or fishing pressure.
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