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@article{2436117, author = {Seo, Harushige and Ansai, Eriko and Sase, Tetsuya and Saito, Takumi and Takano, Tsuyoshi and Kojima, Yosuke and Waki, Tsukasa}, article_number = {December}, doi = {http://dx.doi.org/10.1016/j.parint.2024.102947}, keywords = {Intermediate host; Invasive species; Life cycle; Ochetosoma elongatum}, language = {eng}, issn = {1383-5769}, journal = {Parasitology International}, title = {Introduction of a snake trematode of the genus Ochetosoma in eastern Japan}, url = {https://doi.org/10.1016/j.parint.2024.102947}, volume = {103}, year = {2024} }
TY - JOUR ID - 2436117 AU - Seo, Harushige - Ansai, Eriko - Sase, Tetsuya - Saito, Takumi - Takano, Tsuyoshi - Kojima, Yosuke - Waki, Tsukasa PY - 2024 TI - Introduction of a snake trematode of the genus Ochetosoma in eastern Japan JF - Parasitology International VL - 103 IS - December SP - "102947" EP - "102947" PB - Elsevier Ireland Ltd SN - 13835769 KW - Intermediate host KW - Invasive species KW - Life cycle KW - Ochetosoma elongatum UR - https://doi.org/10.1016/j.parint.2024.102947 N2 - In Japan, trematodes of the family Ochetosomatidae are not naturally distributed. However, the introduced ochetosomatid Ochetosoma kansense (Crow, 1913) has been reported from the oral cavity of native snakes in western Japan since 2010s. In this study, trematodes were isolated from the oral cavities of the native Japanese snakes, Elaphe quadrivirgata (Boie, 1826), E. climacophora (Boie, 1826), and Rhabdophis tigrinus (Boie, 1826), in the central Kanto region of eastern Japan. Morphological and molecular analyses of the isolated trematodes revealed that all trematodes were identifiable to a newly introduced ochetosomatid species to Japan, O. elongatum (Pratt, 1903), which originated from North America; Lechriorchis tygarti Talbot, 1933 was synonymized with O. elongatum based on identical molecular data and morphological similarity. To identify first intermediate hosts of O. elongatum, seven freshwater snail species were examined in eastern Japan. Molecular analysis was used to identify O. elongatum sporocysts in the freshwater snail Physella acuta (Draparnaud, 1805), which also originated from North America. The other six species did not host O. elongatum, suggesting that Ph. acuta is the only first intermediate host of O. elongatum in Japan. Although O. elongatum has been detected in Japan, its invasion route and period of introduction are unclear. Frequent imports of freshwater snails and wild snakes from North America, after the 1990s and 2005, respectively, presumably introduced O. elongatum in Japan. ER -
SEO, Harushige, Eriko ANSAI, Tetsuya SASE, Takumi SAITO, Tsuyoshi TAKANO, Yosuke KOJIMA and Tsukasa WAKI. Introduction of a snake trematode of the genus Ochetosoma in eastern Japan. \textit{Parasitology International}. Elsevier Ireland Ltd, 2024, vol.~103, December, p.~''102947'', 11 pp. ISSN~1383-5769. Available from: https://dx.doi.org/10.1016/j.parint.2024.102947.
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