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수입산 관상 금붕어(Carassius auratus)의 CyHV-2 감염 증례
노을빛,진지혜,최희주,김광일,김보성 한국어병학회 2022 한국어병학회지 Vol.35 No.2
In this study, imported ornamental goldfish (Oranda and black moor) with high mortality was investigated with histopathological analysis. Fishes showed clinical symptoms characterized by gill necrosis and cumulative mortality ranging from 60% to 90% within a month after import from Thailand and China in 2021. CyHV-2 was detected in gill, kidney, spleen and liver of goldfishes. Histopathological analysis revealed epithelial necrosis, intranuclear inclusion bodies associated with viral symptoms in epithelial cell, macrophage infiltration and vacuolation in secondary lamella. In addition, disseminated granuloma formation was observed in various organs such as kidney, heart and mesenchymal membranes. These lesions refer to coinfections with CyHV-2 and other pathogens that cause chronic inflammation, which leads to mortality. Therefore, early disease monitoring needs to reduce the mortality when ornamental goldfish is imported.
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노을빛,윤수영,박도건,최희정,김재옥,김보성 한국어병학회 2024 한국어병학회지 Vol.37 No.2
In February 2024, rock breams in Tongyeong, Gyeongsangnam-do, lost their buoyancy and equili- brium while swimming on the surface of water at a temperature around 12℃. Abdominal distention and expanded swim bladder were observed in those exhibiting clinical symptoms. Histopathological examination under optical microscope revealed intracytoplasmic eosinophilic vesicles and enlarged nucleus in the epithelial cells of the swim bladder's gas gland. Disseminated icosahedral virus particles, measuring around 120–135nm in diameter, were detected by transmission electron microscope in the epithelial cells of gas gland and the endothelial cells of swim bladder's rete mirabile. This case is the first report of viral swim bladder dysfunction in cold water.
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