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1 February 2001 FIVE CASES OF DIPHYLLOBOTHRIUM NIHONKAIENSE INFECTION WITH DISCOVERY OF PLEROCERCOIDS FROM AN INFECTIVE SOURCE, ONCORHYNCHUS MASOU ISHIKAWAE
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Abstract

Five persons from 2 families residing at Miyama Town, Mie Prefecture, Japan, ingested fresh raw fish Oncorhynchus sp. on 9 May 1999 that was caught at Owase district in Mie. They all expelled diphyllobothriid cestodes 11–37 days after ingesting the fish. The parasites were morphologically identical to Diphyllobothrium nihonkaiense Yamane et al., 1986. Five plerocercoids were detected from a portion of the fish. Nucleotide sequence of a region of the cytochrome c oxidase subunit I gene of mitochondrial DNA from an adult worm was identical with that from the plerocercoid. The fish was identified as Oncorhynchus masou ishikawae according to the nucleotide sequence of the nuclear ribosomal second internal transcribed spacer region II gene. This is the first record of D. nihonkaiense plerocercoids from O. m. ishikawae.

Katsuhiko Ando, Ken Ishikura, Tetsuya Nakakugi, Yoshiki Shimono, Takuya Tamai, Masahiro Sugawa, Wutipong Limviroj, and Yasuo Chinzei "FIVE CASES OF DIPHYLLOBOTHRIUM NIHONKAIENSE INFECTION WITH DISCOVERY OF PLEROCERCOIDS FROM AN INFECTIVE SOURCE, ONCORHYNCHUS MASOU ISHIKAWAE," Journal of Parasitology 87(1), (1 February 2001). https://doi.org/10.1645/0022-3395(2001)087[0096:FCODNI]2.0.CO;2
Received: 11 July 2000; Accepted: 1 September 2000; Published: 1 February 2001
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