337
Table 6.1 Characteristics of Edwardsiella tarda
a and Paracolobactrum anguillimortiferum
b
Character
Edw. tarda
Paracolobactrum anguillimortiferum
Fermentative metabolism
+
+
Production of:
Arginine dihydrolase
–
NS
Catalase
+
+
β-galactosidase
–
NS
H 2 S
+
+
Indole
+
+
Lysine decarboxylase
+
NS
Ornithine decarboxylase
+
NS
Oxidase
–
NS
Phenylalanine deaminase
–
NS
Methyl red test
+
NS
Nitrate reduction
+
+
Voges Proskauer reaction
–
–
Degradation of:
Aesculin, casein, gelatin
–
–
Tributyrin, urea
–
NS
DNA, elastin, lecithin
–
–
Tween 20, 40, 60 and 80
–
–
Chitin
–
–
Blood
+
+
Utilisation of:
Sodium citrate, sodium malonate
–
NS
Growth at 42 °C
+
+
Growth in 3 % (w/v) sodium chloride
+
+
Growth in 8 % (w/v) sodium chloride
–
–
Acid production from:
Adonitol, aesculin, erythritol
–
NS
Arabinose, cellobiose, dulcitol
–
–
Fructose, galactose, glycerol
+
NS
Glucose, maltose,
+
+
Inositol,
–
NS
Lactose, mannitol, raffi nose
–
–
Mannose
+
NS
Rhamnose, salicin, sorbitol
–
–
Sucrose, trehalose, xylose
–
–
a From Sakazaki and Tamura ( 1975 ), Wakabayashi and Egusa ( 1973 ), Amandi et al. ( 1982 ) and
Nakatsugawa ( 1983 )
b
From Hoshina ( 1962 )
NS not stated
Edwardsiella tarda