Edwardsiellosis in Sea Bream Sparus Aurata from Suez-Bay

Document Type : Original Article

Authors

1 Department of Fish Diseases and management, Faculty of Veterinary Medicine, Suez Canal University.

2 Department of Pathology, Faculty of Veterinary Medicine, Suez Canal University.

3 Royal International Inspection Lab (RIL) Ain Elsokhna, Suez Governorate

Abstract

The present study was carried out to investigate presence of edwardsiellosisin Sea bream Sparus aurata fished from Attaka fishing port, Suez-bay, Suez Governorate. 40 Fish S. aurata were collected randomly and freshly from Attaka fishing port during spring 2015. Naturally infected fish showed hemorrhages on different parts of body surface including fins and Gills cover, swollen abdomen with scales detachment. Isolation of the causative agent was performed from spleen, kidneys, liver and gills. Biochemical identification was performed using Microbact 24E which revealed 2 Edwardsiella tarda isolates (A and B).  Experimental infection by I/P route in Koi fish using (A), (B) isolates revealed 70 and 80% mortalities respectively. The LD50 was 2X106 CFU/ml for (A) and (B) isolates. Histopathological examination on infected S. aurata showed necrosis and degeneration in gills, liver, kidneys and spleen.
 

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Suez Canal Veterinary Medical Journal. SCVMJ
Volume 21, Issue 2
December 2016
Pages 47-55

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