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Characteristics of Viral Endothelial Cell Necrosis of Eel (VECNE) from Culturing Eel (Anguilla japonica, Anguilla bicolar) in Korea  

Kim, Su Mi (West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Ko, Sang Mu (Pukyong National University Control Center for Aquatic Animal Disease)
Jin, Ji Hye (DaOn Fisheries Diseases management)
Seo, Jung Soo (Aquatic Life Disease Control Division, National Institute of Fisheries Science)
Lee, Nam Sil (Pathology Research Division, National Institute of Fisheries Science)
Kim, Young Suk (Aquatic Life Disease Control Division, National Institute of Fisheries Science)
Gu, Jeong Hui (West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Bae, Yu Ri (West Sea Fisheries Research Institute, National Institute of Fisheries Science)
Publication Information
Korean Journal of Ichthyology / v.30, no.4, 2018 , pp. 185-193 More about this Journal
Abstract
From 2017 to 2018, the disease has been monitored at four culturing eel farms in Incheon and Gyeonggi region in Korea. As a result, diseases with gill congestion frequently occurred. This disease occurred regardless of size of eel, but the frequency and cumulative mortality were high in eels within 3 months after stocking. The infected fish showed pathological histopathological features such as intense congestion and dilation in the central venous sinus (CVS) of gill filaments and hemorrhages in liver and kidney. Hexagonal viral particles measuring about 70 nm in diameter was observed in nuclei and cytoplasm of gill vascular endothelial cells. Molecular biologic diagnosis by both PCR and genetic analysis has been revealed that the causative agent of this disease is Japanese eel endothelial cells-infecting virus (JEECV), the cause of viral endothelial cell necrosis of eel (VECNE), which is mainly reported in Japan. This study is the first report on the characteristics of JEECV and VECNE infection in domestic eel farms.
Keywords
Eel; VECNE; JEECV; polyomavirus; gill congestion;
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