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oai:fra.repo.nii.ac.jp:02010412 2026-02-19T01:40:58Z 15 1:6:26

国内で検出された Carp edema virus のニシキゴイ，マゴイおよびキンギョに対する感染性と病原性 Infectivity and pathogenicity of carp edema virus isolated in Japan to koi carp, common carp and goldfish Matsumoto, Akane 2558 松本, あかね 70996850 マツモト, アカネ Honda, Kotaro 2559 本田, 幸太郎 ホンダ, コウタロウ Takahashi, Hiroshi 1253 髙橋, 洋 90399650 タカハシ, ヒロシ 0000-0001-8410-0508 Kondo, Masakazu 1252 近藤, 昌和 70399666 コンドウ, マサカズ Yasumoto, Shinya 1254 安本, 信哉 30581508 ヤスモト, シンヤ carp; Cyprinus carpio; goldfish; carp edema virus; viral edema of carp Viral edema of carp (VEC) caused by the carp edema virus (CEV) causes economic losses for Japanese koi farms. In this study, we investigated the infectivity and pathogenicity of a domestic CEV isolate (genogroup IIa) in koi carp, common carp and goldfish. The challenge test consisted of 9 groups (n = 15): 3 groups each of koi carp, common carp, and goldfish, at 15, 20 and 25℃ . These groups were challenged with CEV (3.0×103 copies/µL) in duplicate. All koi carp died in the 15 and 20℃ groups, but all survived in the 25℃ group. The surviving koi carp in 25℃ groups showed high PCR positive rates of 66.7 and 73.3%, with VEC histopathological changes observed. For the common carp, 1 and 2 fish died in the 20℃ groups, but no deaths or VEC symptoms were observed in the 15 and 25℃ groups. In all common carp groups, PCR-positive fish were observed along with histopathological changes. For all goldfish groups, no deaths or VEC symptoms were observed. As with the common carp, PCRpositive fish were found in all goldfish groups, yet no VEC histopathological changes were detected. These results demonstrate infectivity of this CEV strain in koi carp, common carp, and goldfish, but low pathogenicity in common carp and goldfish. 編集：水産大学校 departmental bulletin paper Japan Fisheries Research and Education Agency 水産研究・教育機構 2023-03-31 VoR application/pdf Journal of National Fisheries University 3 71 73 80 水産大学校研究報告 AN00124678 0370-9361 https://fra.repo.nii.ac.jp/record/2010412/files/fish-u_k_71-3_2.pdf https://doi.org/10.57348/0002010412 https://fra.repo.nii.ac.jp/records/2010412 jpn fish-u_k_71-3_2 open access