555
Characteristics of the Pathogen
V. ichthyoenteri was described as a result of an examination of 7 isolates from fl ounder larvae (Ishimaru et al. 1996 ).
Control
Susceptibility was recorded to potentiated sulphonamides, namely trimethoprimsulphamethoxazole (Lee et al. 2012 ).
Vibrio mimicus
Characteristics of the Disease
V. mimicus has been mentioned a cause of ascites disease in fi sh (Cen et al. 2013 ),
notably grass carp ( Ctenopharyngodon idella ) (Zhang et al. 2014b ). In cultured yellow catfi sh ( Pelteobagrus fulvidraco ) in China, there was an association with skin
ulcers. The fi sh became lethargic, inappetant, leading to 70–100 % mortalities.
Internally, there was extensive hemorrhaging in the abdominal wall, and enlargement of the gall bladder, kidney, liver and spleen (Zhang et al. 2014b ).
Box 10.11: Vibrio ichthyoenteri
Cultures are non pigmented on marine 2216E agar, but produce yellow colonies on TCBS, which contain Gram-negative fermentative rods, which are
motile by single polar fl agella. Catalase and oxidase are produced, but not
arginine dihydrolase, ß-galactosidase, H 2 S, indole or ornithine decarboxylase.
Nitrates are reduced. Neither agar, chitin, gelatin, lipids nor starch are
degraded. Polyhydroxybutyrate is not accumulated intracellularly. Growth
occurs at 15–30 °C but not at 4 or 35 °C, and in 1–6 % but not 0 or 8 % (w/v)
sodium chloride. Acid is produced from fructose, D-glucose, maltose,
D-mannose, sucrose and trehalose, but not from adonitol, L-arabinose,
D-cellobiose, dulcitol, erythritol, D-galactose, glycerol, inulin, inositol, lactose, D-mannitol, melibiose, raffi nose, L-rhamnose, salicin or D-sucrose.
Neither D-cellobiose, citrate, D-gluconate, L-leucine not D-xylose are utilised. Sensitivity is recorded to the vibriostatic agent, O/129. The G + C ratio
of the DNA is 43–45 mol %.
Vibrio mimicus
Characteristics of the Pathogen
V. ichthyoenteri was described as a result of an examination of 7 isolates from fl ounder larvae (Ishimaru et al. 1996 ).
Control
Susceptibility was recorded to potentiated sulphonamides, namely trimethoprimsulphamethoxazole (Lee et al. 2012 ).
Vibrio mimicus
Characteristics of the Disease
V. mimicus has been mentioned a cause of ascites disease in fi sh (Cen et al. 2013 ),
notably grass carp ( Ctenopharyngodon idella ) (Zhang et al. 2014b ). In cultured yellow catfi sh ( Pelteobagrus fulvidraco ) in China, there was an association with skin
ulcers. The fi sh became lethargic, inappetant, leading to 70–100 % mortalities.
Internally, there was extensive hemorrhaging in the abdominal wall, and enlargement of the gall bladder, kidney, liver and spleen (Zhang et al. 2014b ).
Box 10.11: Vibrio ichthyoenteri
Cultures are non pigmented on marine 2216E agar, but produce yellow colonies on TCBS, which contain Gram-negative fermentative rods, which are
motile by single polar fl agella. Catalase and oxidase are produced, but not
arginine dihydrolase, ß-galactosidase, H 2 S, indole or ornithine decarboxylase.
Nitrates are reduced. Neither agar, chitin, gelatin, lipids nor starch are
degraded. Polyhydroxybutyrate is not accumulated intracellularly. Growth
occurs at 15–30 °C but not at 4 or 35 °C, and in 1–6 % but not 0 or 8 % (w/v)
sodium chloride. Acid is produced from fructose, D-glucose, maltose,
D-mannose, sucrose and trehalose, but not from adonitol, L-arabinose,
D-cellobiose, dulcitol, erythritol, D-galactose, glycerol, inulin, inositol, lactose, D-mannitol, melibiose, raffi nose, L-rhamnose, salicin or D-sucrose.
Neither D-cellobiose, citrate, D-gluconate, L-leucine not D-xylose are utilised. Sensitivity is recorded to the vibriostatic agent, O/129. The G + C ratio
of the DNA is 43–45 mol %.
Vibrio mimicus