227
Table 5.1 Characteristics of Aeromonas salmonicida
a
Aer. salmonicida subsp
Character
achromogenes
masoucida
pectinolytica
salmonicida
smithia
Production of:
brown,
diffusible
pigment
–
–
+
+
–
Arginine
dihydrolase
+
+
v
v
–
Catalase
+
+
+
+
+
ß-galactosidase +
+
+
+
+
H 2 S
–
+
–
v
+
Indole
–
–
+
–
–
Lysine
decarboxylase
–
+
–
v
–
Ornithine
decarboxylase
–
–
–
–
–
Oxidase
+
+
+
+
+
Phenylalanine
deaminase
.
.
.
–
–
Phosphatase
.
.
.
–
+
Fermentative
metabolism
+
+
+
+
+
Gluconate
oxidation
–
+
–
–
–
Methyl red test
–
+
.
v
–
Motility
–
–
–
–
–
Nitrate
reduction
+
+
+
+
.
Voges Proskauer
reaction
–
+
v
–
–
Degradation of:
Aesculin
–
+
–
v
–
Blood
(ß-haemolysis)
–
+
v
+
–
Casein
+
–
.
+
+
Chitin
–
–
.
–
–
DNA
+
+
+
+
+
Elastin
.
.
–
+
–
Gelatin
–
+
+
+
+
Lecithin
.
.
.
+
–
Polypectate
.
.
+
.
.
RNA
+
+
.
+
+
Starch
.
.
.
+
+
(continued)
Aeromonas salmonicida