Pathology: Experimental scuticociliatosis in Japanese flounder (Paralichthys olivaceus) infected with Miamiensis avidus: pathological study on the possible neural routes of invasion and dissemination of the scuticociliate inside the fish body
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- MOUSTAFA Eman Moustafa Moustafa
- Department of Veterinary Pathology, Tottori University The United Graduate School of Veterinary Science, Yamaguchi University Department of Fish Diseases and Management, Faculty of Veterinary Medicine, Kafr El-Sheikh University
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- TANGE Nahoko
- Tottori Prefectural Fisheries Experimental Station
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- SHIMADA Akinori
- Department of Veterinary Pathology, Tottori University
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- MORITA Takehito
- Department of Veterinary Pathology, Tottori University
書誌事項
- タイトル別名
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- Experimental Scuticociliatosis in Japanese Flounder (Paralichthys olivaceus) Infected with Miamiensis avidus: Pathological Study on the Possible Neural Routes of Invasion and Dissemination of the Scuticociliate inside the Fish Body
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抄録
Japanese flounder (Paralichthys olivaceus) were experimentally infected with the highly pathogenic scuticociliate Miamiensis avidus (syn. Philasterides dicentrarachi) using the immersion method to clarify/identify the possible neural routes of entry and possible ways of dissemination of the scuticociliate in the fish body. Scuticociliates were observed on the skin and gills right from day 0-1 post-infection, muscle tissue on day 2 post-infection, reached the brain, and spinal cord on day 3 post-infection, and systemic infection was prominent afterwards. Brain lesions were observed in most of the examined fish from days 3 and 4 post-infection and considered to be the cause of the sudden increase in mortality. Affected fish showed varying degrees of tissue damage including severe epidermal and dermal necrotic lesions, necrotic myositis, encephalitis and myelitis. Whereas, scuticociliates were frequently observed along the optic and/or olfactory nerve in the fish which were accompanied by severe brain lesions but by minimum lesions in the gills and skin, suggesting that in addition to skin and/or gills, neural routes including periorbital and nasal routes may play a role in scuticociliate invasion to the brain. Scuticociliates were also observed in the peripheral nerve fibers in the muscle tissue, cranial and spinal nerves, cranial cavity and in the vertebral canal, suggesting that nerve fibers and/or cerebrospinal fluid circulation may be involved in the spread of the scuticociliate throughout the body in addition to the blood circulation and connective tissue.<br>
収録刊行物
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- The Journal of Veterinary Medical Science
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The Journal of Veterinary Medical Science 72 (12), 1557-1563, 2010
公益社団法人 日本獣医学会
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詳細情報 詳細情報について
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- CRID
- 1390282681406251136
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- NII論文ID
- 130000307685
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- NII書誌ID
- AA10796138
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- ISSN
- 13477439
- 09167250
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- NDL書誌ID
- 10954234
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可