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Table 1 Phenotypic characteristics a that can be useful to differentiate the species C. shigense , C. piscicola, C. chaponense and F. psychrophilum

From: First isolation and characterization of Chryseobacterium shigense from rainbow trout

Characteristic

C. shigense

C. piscicola

C.chaponense

F. psychrophilum b

Growth at/with:

    

 37 C

-

-

+

-

 3.0 % NaCl

w

+

-

-

Flexirubin-type pigment

+

+

-

+

Hydrolysis of:

    

 Casein

+

-

-

+

 L-tyrosine

+

-

-

V

 Gelatin

+

+

-

+

 Starch

+

+

-

-

 DNA

-

w

-

-

Enzyme activity:

    

 α-glucosidase

-

+

+

V

 β -glucosidase

-

+

+

V

 β-galactosidase

-

-

-

V

  1. a Data for C. shigense are taken from this study, for C. piscicola from reference Ilardi et al. [8], for C. chaponense from reference Kämpfer et al. [11] and for F. psychrophilum from references Bernardet et al. [23], Cipriano and Holt [18] and Hesami et al. [24]. bF. psychrophilum differs also from C. shigense by its inability to utilize glucose as sole carbon source, to hydrolyze aesculin and to produce a brown diffusible pigment on tyrosine agar. +, Positive reaction; -, negative reaction; V, variable reaction; w, weak reaction.