Abstract

PCR-RFLP analysis has been applied to the identification of three clam species: Ruditapes decussatus (grooved carpet shell), Venerupis pullastra (pullet carpet shell), and Ruditapes philippinarum (Japanese carpet shell). PCR amplification was carried out using a set of primers designed from the DNA nucleotide sequences reported for alpha-actins from humans and various animals. Restriction endonuclease analysis based on sequence data of the PCR products of each clam species revealed the presence of species-specific polymorphic sites for MaeIII and RsaI endonucleases. Electrophoretic analysis of the amplicons digested with MaeIII and RsaI produced species-specific profiles that allowed the genetic identification of the three clam species.

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