Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Arcobacter,
Arcobacter mytili Collado et al. 2009.
Gram-negative, non-encapsulated, non-sporeforming, slightly curved or S-shaped
rods, 0.4–0.6 x 1–3 μm. Motile by means of a polar flagellum.
Colonies on sheep blood agar incubated in aerobic conditions at 30 ºC for 48 hours
are 2-4 mm in diameter, beige to off-white, circular with entire margins and convex.
Nonswarming. Nonhemolytic. No pigment production.
All strains grow on sheep blood agar at room temperature (18-22 ºC) and at 30 and
37 ºC under aerobic or microaerobic culture conditions. Weak growth is obtained in
anaerobic conditions at 30 ºC and in aerobic conditions at 42 ºC, and no growth is
observed at 4 ºC.
Grow at 30 ºC on MacConkey agar and on media containing 2.0-4.0% (w/v) NaCl. No
growth is obtained on casein, minimal medium or media containing 64 mg/L
Isolated from mussels (genus Mytilus), and from brackish water in Catalonia (Spain).
- Luis Collado, Ilse Cleenwerck, Stefanie Van Trappen, Paul De Vos, and Maria Jose Figueras. Arcobacter mytili sp. nov., an indoxyl
acetate-hydrolysis-negative bacterium isolated from mussels. Int J Syst Evol Microbiol June 2009 59:1391-1396.
- Luis Collado and Maria José Figueras. Taxonomy, Epidemiology, and Clinical Relevance of the Genus Arcobacter. Clin. Microbiol.
Rev. 2011, 24(1):174.
Positive results for oxidase & catalase (weak).
Negative results for urease, nitrate reduction, indoxyl acetate hydrolysis & H2S production in TSI.
(c) Costin Stoica