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V ibrio alginolyticus infection in A sian seabass ( L ates calcarifer , B loch) reared in open sea floating cages in I ndia
Author(s) -
Krupesha Sharma Sulumane Ramachandra,
Rathore Gaurav,
Verma Dev K,
Sadhu Narasimhulu,
Philipose Kuttickal Kuriakose
Publication year - 2012
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2011.03013.x
Subject(s) - biology , vibrio alginolyticus , lates , fishery , fish <actinopterygii> , grouper , veterinary medicine , pathogen , microbiology and biotechnology , vibrio , bacteria , medicine , genetics
Abstract A sian seabass ( L ates calcarifer ) has been designated as a candidate species for open sea cage culture in I ndia. A case of vibriosis in A sian seabass reared in open sea floating cages is reported. Haemorrhage and ulcer were observed grossly in the diseased fish. The pathogen, identified as V ibrio alginolyticus based on biochemical and molecular characterization, was isolated from liver, gill, kidney, brain and blood. Histological examination of the diseased fish showed congestion, haemorrhage and necrosis in vital organs. The LD 50 studies showed that the organism was virulent to A sian seabass, and the LD 50 value was 10 3.2 CFU g −1 fish.