Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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A Case report of cutaneous ulceration in ornamental electric eel (Electrophorous electricus)

관상 전기뱀장어(Electrophorus electricus)의 피부 궤양병 증례

  • Eul Bit Noh (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University) ;
  • Beom Hee Lee (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University) ;
  • Ji Hye Jin (DaOn Fisheries Diseases management) ;
  • Bo Seong Kim (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University)
  • 노을빛 (군산대학교 수산생명의학과) ;
  • 이범희 (군산대학교 수산생명의학과) ;
  • 진지혜 (다온수산질병관리원) ;
  • 김보성 (군산대학교 수산생명의학과)
  • Received : 2023.05.23
  • Accepted : 2023.06.07
  • Published : 2023.06.30
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Abstract

In this study, dead electric eel (Electrophorus electricus) imported from Peru was investigated with histopathological analysis. On the third day after import, the electric eel began to exhibit clinical symptoms including severe ulceration, exposed muscles with hemorrhage in head and body lesions. Aeromonas hydrophila and A. veronii were detected from skin lesions, whereas A. hydrophila and Plesiomonas shigelloides were detected from internal organs. Histopathological analysis revealed epithelial desquamation in ulcer, epithelial and goblet cell hyperplasia, and lymphocyte infiltration in epidermis. In dermis, macrophage infiltration and colonization of A. hydrophila or A. veronii were seen. The activation and infiltration of macrophage associated with bacterial septicemia were observed in kidney and spleen. It is presumed to be mortality of electric eel due to septicemia caused by opportunistic infectious bacteria after transport stress.

Keywords

References

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