Abstract
Random amplified polymorphic DNA (RAPD) markers were assayed in an attempt to discriminate among five species of Paragonimus. Genomic DNAs of two strains of Paragonimus heterotremus from two provinces in Thailand, Saraburi and Phitsanulok, as well as of P. siamensis, P. harinasutai, P. westermani and P. bangkokensis were extracted and amplified by an arbitrary primer, namely P2 (5-GTTTCGCTCC-3). RAPD patterns showed that those five species were genetically distinct, although they shared genomic DNA to some extent. This primer could also distinguish between two strains of P. heterotremus. The polymorphism observed allowed to construct a relationship dendrogram. The phylogenetic dendrogram showed that the P. heterotremus strains were closest to P. harinasutai, followed by P. siamensis, P. bangkokensis and P. westermani.
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