宿主 Host

アユ Plecoglossus altivelis altivelis (Temminck and Schlegel, 1846) [1, 2, 4]．

寄生部位 Site of infection

体表 body surface [1, 3]，鰓 gills [1]，鰭 fin [2]．

産地 Localities

長野県 Nagano Pref. [2]；徳島県 Tokushima Pref. [2]，吉井川 Yoshii R. (岡山県 Okayama Oref.) [4]；琵琶湖 L. Biwa（滋賀県 Shiga Pref.）[5]．

環境 Environment

淡水 freshwater．

文献 References

[1] Kikuchi, H. (1929). Two new species of Japanese trematodes belonging to Gyrodactylidae. Annotationes Zoologicae Japonenses 12: 175–186.

[2] Ogawa, K. and Egusa, S. (1978c). Seven specieosf Gyrodactylus (Monogenea: Gyrodactylidae) from Plecoglossus altivelis (Plecoglossidae), Cyprinus carpio (Cyprinidae) andAnguilla spp.(Anguillidae). Bulletin of the Japanese Society of Scientific Fisheries 44: 613–618.

[3] 稲田善和･吉村研治･谷口順彦 (1990). 人為3倍体アユのギロダクチルスおよび横川吸虫に対する感受性. 魚病研究 25: 115–116. (Inada, Y. Yoshimura, K. and Taniguchi, N. (1990). [Susceptibility of artificially induced triploid ayu (Plecoglossus altivelis) to Gyrodactylus (Monogenea) and Metagonimus (Trematoda) infections]. Fish Pathology 25: 115–116. [In Japanese])

[4] 増成伸文･植木範行 (1999). 岡山県の河川における天然在来魚及び放流アユ種苗等の冷水病原因菌の保菌状況. 岡山県水産試験場報告 14: 64–69. (Masunari, N. and Ueki, N. (1999). A percentage of Flavobacterium psychorophilum carrier in stocked ayu juveniles and other wild fishes in rivers of Okayama Prefecture. Bulletin of the Fisheries Experiment Station, Okayama Prefecture 14: 64–69. [In Japanese with English title])

[5] Timoshkin, O. A., Grygier, M.J., Wada, E., Nakai, K., Nishino, M., Genkal, S. I., Biserov, V. I., Gagarin, V. G., Semernoy, V. P., Jankowski, A. W., Stepanjants, S.D., Tsalolikhin, S. Ya., Starobogatov, Ya. I., Alexeev, V. R., Tuzovskij, P. V., Okuneva, G.L., Sheveleva, N. G., Pomazkova, G. I., Arov, I. V., Mazepova, G. F., Janz, H., Obolkina, L. A., Chernyshev, A. V., Morino, H., Matsuda, M., Ohtsuka, T., Kawakatsu, M., Maehata, M., Masuda, Y., Faubel, A. Yahiro, K., Hirasawa, R., Tuji, A., Kusuoka, Y., Kameda, K., Ishida, T., Itoh, T., Ichise, S., Wakabayashi, T., Okubo, U., Seki, Sh., Nagasawa, K., Ogawa, K., Masunaga, K., and Gamo, J. (2011). Biodiversity of Lake Biwa: New discoveries and future potential. Pp. 1439– 1513. In: Timoshkin, O. A. (ed.: Russian Academy of Science, Siberian Division, Limnological Institute), “Index of Animal Species Inhabiting Lake Baikal and Its Catchment Area” Vol. II. Appendix 3. Nauka, Novosibirsk, Russia.

備考 Remarks

長野県および徳島県からの記録は，琵琶湖産アユの移入に伴い侵入したものと考えられている [2].

Gyrodactylus japonicus recorded from Nagano and Tokushima prefectures were considered to be co-introduced with the host Plecoglossus altivelis altivelis from Lake Biwa, Shiga Prefecture [2].

和名は横山・長澤 (2014) によって提唱された.

文献 References

横山 博・長澤和也 2014. 養殖魚介類の寄生虫の標準和名目録. 生物圏科学：広島大学大学院生物圏科学研究科紀要 53： 73–97.