- 著者
- Masato Nitta Takanori Ishikawa Tomiji Hagiwara
- 出版者
- The Japanese Society of Systematic Zoology
- 雑誌
- Species Diversity (ISSN:13421670)
- 巻号頁・発行日
- vol.25, no.2, pp.349-354, 2020-11-16 (Released:2020-11-17)
- 参考文献数
- 49
- 被引用文献数
- 2
Dactylogyrus petruschewskyi Gussev, 1955 (Monogenea: Dactylogyridae) was found infecting the gills of Megalobrama amblycephala Yih, 1955 (Cypriniformes: Cyprinidae: Cultrinae) that was sampled from the Ono River flowing into Lake Kasumigaura in Ibaraki Prefecture, central Japan. This is the first record of this monogenean from Japan, and this parasite was most likely introduced and established along with M. amblycephala from China into Japan. The 28S rDNA sequence of D. petruschewskyi is available in the database but not based on a published study. We analyzed molecular data based on newly collected specimens, and the obtained sequence corresponded to the available sequence.
- 著者
- Masato Nitta Takanori Ishikawa
- 出版者
- The Japanese Society of Systematic Zoology
- 雑誌
- Species Diversity (ISSN:13421670)
- 巻号頁・発行日
- vol.29, no.1, pp.23-30, 2024-01-11 (Released:2024-01-11)
- 参考文献数
- 60
Henneguya postexilis Minchew, 1977 (Cnidaria: Myxobolidae) is described as a novel record for Japan. It was found in the gills of non-native Ictalurus punctatus (Rafinesque, 1818) (Siluriformes: Ictaluridae), which were collected from the Omoi River, a tributary of the Tone River system in Tochigi Prefecture, central Honshu. This myxozoan species is native to North America and its discovery from Japan in this study is the second case reported from a non-native region. Until now, H. postexilis has only been observed in I. punctatus, suggesting that it is an introduced alien species in Japan, likely accompanying its host.