Departmental Bulletin Paper 日本に定着したサンフィッシュ科魚類3種(ブルーギル,オオクチバス, コクチバス)の寄生虫目録(1962-2017年)
A checklist of the parasites of three species of centrarchids (bluegill, largemouth bass, and smallmouth bass) in Japan (1962-2017)

長澤, 和也

56pp.105 - 120 , 2017-12-15 , 広島大学大学院生物圏科学研究科
1962-2017年の56年間に出版された報文に基づき,日本に定着したサンフィッシュ科魚類3種(ブルーギル,オオクチバス,コクチバス)から報告された寄生虫の情報を整理した。その結果,21名義種・亜種と未同定の寄生虫が次の分類群からが報告されていた:ミクソゾア類[名義種数:0種],条虫類[2種],単生類[6種],吸虫類[5種],線形動物[2種],鉤頭動物[1種],二枚貝類[3種・亜種],カイアシ類[2種])。ブルーギルからは12名義種,オオクチバスからは13名義種・亜種,コクチバスからは3名義種の寄生虫が記録されていた。これら寄生虫は,日本の在来種と外国から宿主とともに持ち込まれた外来種からなり,条虫類1種(オオクチバスとコクチバス寄生のバスハイトウジョウチュウProteocephalus fluviatilis)と単生類6種(ブルーギル寄生のActinocleidus fergusoni,Onchocleidus dispar,Onchocleidus ferox;オオクチバス寄生のOnchocleidus furcatus,Onchocleidus helicus,Syncleithrium fusiformes)は北米に起源を有する種である。人体に寄生する線虫,ドロレス顎口虫Gnathostoma doloresi と日本顎口虫Gnathostoma nipponicum がそれぞれブルーギルとオオクチバスから報告され,後者の人体寄生例もあった。
Information on the metazoan parasites of three species of the family Centrarchidae (bluegill Lepomis macrochirus, largemouth bass Micropterus salmoides, and smallmouth bass Micropterus dolomieu) in Japan is summarized in the Parasite-Host and Host-Parasite lists, based on the literature published for 56 years between 1962 and 2017. These fish species were introduced from the U. S. A. into Japan, where they have widely established. The parasites, including 21 nominal species and subspecies and those not identified to species level, are listed by higher taxa as follows: Myxozoa (no. of nominal and subspecies species: 0), Cestoda (2), Monogenea (6), Trematoda (5), Nematoda (2), Acanthocephala (1), Bivalvia (3), and Copepoda (2). For each parasite species, the following information is given: its currently recognized scientific name; previous identification used for the parasite from centrarchids in Japan; site(s) of infection within or on the host; known geographical distribution in Japanese waters; and the published source of each record. Of the 21 nominal species and subspecies of parasites listed, 12 species are from bluegill, 13 species and subspecies from largemouth bass, and three species from smallmouth bass. The parasites listed consist of both those native to Japan and those introduced from overseas. One species of Cestoda (Proteocephalus fluviatilis) and six species of Monogenea (Actinocleidus fergusoni, Onchocleidus dispar, and Onchocleidus ferox from bluegill; Onchocleidus furcatus, Onchocleidus helicus, and Syncleithrium fusiformes from largemouth bass) are the parasites of North American origin. Two species of Nematoda (Gnathostoma doloresi and Gnathostoma nipponicum) are among human parasites and have been reported from bluegill and largemouth bass, respectively. A human infection by the latter species occurred by eating the raw flesh of a largemouth bass from Japan.
本論文のもとになった研究に対して日本学術振興会のJSPS 科研費JP15K07527の助成を受けた。

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