Phylogenetic status of a lung fluke in the Philippines based on mitochondrial genome

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Based on a near-complete mitochondrial DNA sequence, the phylogenetic status of a lung fluke collected in the Philippines was evaluated. The lung fluke from Leyte Island, Philippines, resembles <I>Paragonimus westermani</I> morphologically and is sometimes regarded as a subspecies, <I>P westermani filipinus</I>. In this study, all mitochondrial genes of the Leyte form were sequenced : 12 subunits of mitochondrial enzymes, 2 ribosomal RNA genes and 21 transfer RNAs. The gene order is the same as that of the previously-published P. westermani from Korea. All genes are transcribed in the same direction. The sequence from Leyte was 88.8% identical to the previously-published sequence (accession No. AF219379). This is further evidence that the Philippine form should be regarded as specifically distinct from the form in East Asia (China, Japan and Korea). This conclusion is strengthened by the observation that the molluscan host of the Philippine form is of a different family from that of the East Asian form.
日本熱帯医学会の論文