Abstract
This study examines the population genetic structure of the endangered bivalve Pinna nobilis (Mollusca: Bivalvia), based on novel mtDNA sequences (partial COI and 16S rDNA mtDNA genes). The analyzed nucleotide sequences of COI were 729 bp in size, coding for a 243 amino acid peptide, while the analyzed nucleotide sequences of 16S rDNA were 489 bp in size. These sequences of P. nobilis were the first DNA sequences of the species submitted to any Genetic Data Base. Population samples from four geographic regions from Greece, as well as a population sample of Atrina fragilis (as an outgroup) were used. High values of haplotypic diversity were found in the population samples of P. nobilis, based on the COI sequences. A single base in the analyzed 16S rDNA sequences was different in all analyzed individuals from a single population sample (Chios island) differentiating it from the other ones. These mtDNA sequences could be informative for further genetic analyses of the endangered species, contributing in conservation plans for its protection and/or aquaculture investigations.
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