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Histopathological studies of bacterial haemorrhagic ascites of ayu, Plecoglossus altivelis (Temminck & Schlegel)
Author(s) -
Kobayashi T,
Imai M,
Ishitaka Y,
Kawaguchi Y
Publication year - 2004
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.2004.00563.x
Subject(s) - plecoglossus altivelis , biology , spleen , gill , pathology , kidney , ascites , fibrin , microbiology and biotechnology , fish <actinopterygii> , medicine , immunology , fishery , endocrinology
A histopathological study was carried out on ayu, Plecoglossus altivelis , with bacterial haemorrhagic ascites. The fish were obtained from culture ponds in Wakayama Prefecture in 2003. The causative agent was identified as Pseudomonas plecoglossicida by a slide agglutination test using anti‐ P. plecoglossicida FPC941 serum. Histopathological studies revealed lesions in spleen, kidney, liver, intestine, heart and gills. Lesions in the spleen and haematopoietic tissue were prominent and invaded by P. plecoglossicida . Necrotic lesions accompanied by haemorrhage, fibrin deposition and oedema occurred in the splenic pulp and sheathed tissue, and in the kidney. The liver also had necrotic lesions and abscess formations. However, the intestine, heart and gills were only slightly invaded by P. plecoglossicida . No lesions or bacteria were observed in the brain.