Photobacterium damselae (Vibrio damsela)
|
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Vibrionales, Family Vibrionaceae, Genus Photobacterium,
Photobacterium damselae Smith et al. 1991. Two subspecies:
- Photobacterium damselae subsp. damselae corrig. (Love et al. 1982) Smith et al. 1991, subsp. nov.,
- Photobacterium damselae subsp. piscicida corrig. (ex Janssen and Surgalla 1968) Gauthier et al. 1995.
Synonyms: Vibrio damsela Love, Teebken - Fisher, Hose, Farmer, Hickman, and Fanning 1982 (Smith et al.1991), Listonella
damsela MacDonell & Colwell 1985, Photobacterium histaminum Okuzumi et al. 1994, Pasteurella piscicida Janssen and Surgalla
1968.
Photobacterium histaminum Okuzumi et al. 1994 is considered a later synonym of Photobacterium damselae subsp. damselae.
Subsp. damselae: Gram-negative rods, sometimes motile, not swarming on solid media.
Subsp. piscicida: Gram-negative, bipolar staining, pleomorphic cells, coccoidal to rods under different culture conditions, 1.5 x 1.0
μm, nonmotile, nonflagellated.
Subsp. damselae: colonies are smooth, slightly convex, greyish or whitish, often
hemolytic on blood agar and their diameter is between 2.5 to 3 mm.
Can grow in nutrient broth with: 1% & 6% NaCl. No growth in 0%, 8%, 10% & 12%
NaCl.
Growth temperature 30 - 35 ºC. No growth at 4 ºC.
Subsp. piscicida: colonies are round, 1-2 mm in diameter, glistening,convex, opaque
and viscid; capsules maybe produced. Grow on blood agar, BHI-agar, TSA
supplemented with 1% NaCl, thiosulfate citrate bile sucrose agar and marine agar.
Unable to grow in the absence of Na+. Can grow in nutrient broth with: 1% and 2%
NaCl. No growth in 0%, 6%, 8%, 10% and 12% NaCl.
Growth temperature 20-35 ºC. No growth at 4 or 40 ºC. Facultative anaerobe, no
hemolysin production, no luminescence.
Subsp. damselae: isolated from fish Chromis punctipinnis and marine algae (important in disease transmission to fish), sewage,
oysters & a wound culture from a racoon. Sensible to O/129 vibriostatic agent (10 & 150 µg).
Subsp. piscicida: isolated from diseased fish (Seriola quinqueradiata, Sparus aurata, Dicentrarchus labrax), restricted to the East
Coast of North America, Japan & Mediterranean area.
Resistant to oxacillin. Variable sensivity to vibriostatic agent O/129.
Subsp. damselae: causes skin ulcers in fish Chromis punctipinnis. It is an opportunistic pathogen capable of causing disease in a
variety of hosts, including sharks (Grimes et al., 1984), dolphins (Fujioka et al., 1988) and humans.
Subsp. piscicida: can be extremely virulent for fish (pasteurellosis); isolated from diseased fish (Seriola quinqueradiata, Sparus
aurata, Dicentrarchus labrax)
Presence of the iron uptake system and the phospholipase are important in virulence. Capsules may be produced.
- J.J. Farmer, M. Janda, 2004. Family I. Vibrionaceae. In: Bergey’s Manual of Systematic Bacteriology, Second edition,Vol two, part
B, George M. Garrity (Editor-in-Chief), pp. 491-546.
- An Thyssen, Frans Ollevier, 2004. Genus II. Photobacterium Beijerinck 1889. In: Bergey’s Manual of Systematic Bacteriology,
Second edition,Vol two, part B, George M. Garrity (Editor-in-Chief), pp. 546-555.
- J. G.Holt et al., 1994. Group 5 Facultatively anaerobic Gram-negative rods. Subgroup 2 Family Vibrionaceae. In: Begey’s Manual of
Determinative Bacteriology, 9-th edition, Williams & Wilkins. pp. 190-194.
- Judith A. Johnson, 2006. Vibrio. In: Topley & Wilson’s Microbiology and Microbial Infections, 10 edition, Vol. 2, Bacteriology,
Edward Arnold Ltd., 1507-1523.
- Kimura, B, Hokimoto, S, Takahashi, H, Fujii, T. Photobacterium histaminum Okuzumi et al. 1994 is a later subjective synonym of
Photobacterium damselae subsp. damselae (Love et al. 1981) Smith et al. 1991. Int J Syst Evol Microbiol 2000 50: 1339-1342.
- A. Thyssen, L. Grisez, r. van Houdt and F. Ollever, 1998. Phenotypic characterization of the marine pathogen Photobacterium
damselae subsp. piscicida. IJSB 48, 1145-1151.
- Truper H.G. and De' Clari L): Taxonomic note: Necessary correction of specific epithets formed as substantives (nouns) "in
apposition". Int. J. Syst. Bacteriol., 1997, 47, 908-909.
Subsp. damselae:
Positive results for methyl red (1%NaCl), Voges-Proskauer (1% NaCl), arginine (1% NaCl),
nitrate reduction to nitrite, oxidase, acid production from D-glucose, D-galactose, maltose, D-mannose and trehalose.
Negative results for indole (Heart Infusion Broth, 1% NaCl), citrate (Simmons), H2S on TSI, urea hydrolysis, phenylalanine
deaminase, ornithine (1% NaCl), gelatin hydrolysis (1% NaCl, 22 ºC), gas from D-glucose, esculin hydrolysis, lipase, ONPG test, acid
production from: D-adonitol, L-arabinose, D-arabitol, cellobiose, dulcitol, glycerol, myo-inositol, lactose, D-mannitol, melibiose,
raffinose, L-rhamnose, salicin, D-sorbitol, sucrose and D-xylose.
Lysine (1% NaCl) is variable.
Subsp. piscicida can be differentiated from subsp. damselae by positive lipase production, negative nitrate reduction to nitrite and no
acid production from maltose and trehalose.
(c) Costin Stoica