| Arcobacter molluscorum |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Epsilonproteobacteria, Order Campylobacterales, Family Arcobacteraceae, Genus
Arcobacter, Arcobacter molluscorum Figueras et al. 2011.
Synonyms: Malacobacter molluscorum (Figueras et al. 2011) Perez-Cataluna et al. 2019, Malaciobacter molluscorum corrig.
(Figueras et al. 2011) Perez-Cataluna et al. 2019.
Arcobacter, Arcobacter molluscorum Figueras et al. 2011.
Synonyms: Malacobacter molluscorum (Figueras et al. 2011) Perez-Cataluna et al. 2019, Malaciobacter molluscorum corrig.
(Figueras et al. 2011) Perez-Cataluna et al. 2019.
Gram-negative, slightly curved rods, 0.3-0.5 x 1-3.4 μm. Some cells have a filamentous form up to 7 μm long. Motile by a single polar
flagellum. Non-encapsulated. Non-spore-forming.
flagellum. Non-encapsulated. Non-spore-forming.
Colonies on blood agar incubated in aerobic conditions at 30 ºC for 48 h are 2-4 mm
in diameter, beige to off-white, circular with entire margins, convex, and
non-swarming. Pigments are not produced on blood agar. Grows on blood agar at
room temperature (18-22 ºC), 30 and 37 ºC under both aerobic and microaerobic
conditions, but growth is enhanced when 2% NaCl is added to blood agar. Growth is
weak in anaerobic conditions at 30 ºC and in aerobic conditions at 42 ºC. No
haemolysis on TSA + 5% sheep blood. Under aerobic conditions grows at 30 ºC on
MacConkey agar and on media containing: 0.1% sodium deoxycholate; 1% oxgall;
0.05% safranin; 0.0005% crystal violet and media with 64 mg cefoperazone / l (but
growth is enhanced when the media are supplemented with 2% NaCl); and 2-4%
(w/v) NaCl. Grows on media containing 0.005% basic fuchsin or 0.001% brilliant
green if they were supplemented with 2% NaCl. No growth occurs on minimal
medium, media containing 1% glycine; 0.04% TTC and on CCDA.
in diameter, beige to off-white, circular with entire margins, convex, and
non-swarming. Pigments are not produced on blood agar. Grows on blood agar at
room temperature (18-22 ºC), 30 and 37 ºC under both aerobic and microaerobic
conditions, but growth is enhanced when 2% NaCl is added to blood agar. Growth is
weak in anaerobic conditions at 30 ºC and in aerobic conditions at 42 ºC. No
haemolysis on TSA + 5% sheep blood. Under aerobic conditions grows at 30 ºC on
MacConkey agar and on media containing: 0.1% sodium deoxycholate; 1% oxgall;
0.05% safranin; 0.0005% crystal violet and media with 64 mg cefoperazone / l (but
growth is enhanced when the media are supplemented with 2% NaCl); and 2-4%
(w/v) NaCl. Grows on media containing 0.005% basic fuchsin or 0.001% brilliant
green if they were supplemented with 2% NaCl. No growth occurs on minimal
medium, media containing 1% glycine; 0.04% TTC and on CCDA.
Isolated from shellfish samples (mussels and oysters) in Spain.
Undetermined.
- Figueras MJ, Collado L, Levican A, Perez J, Solsona MJ, Yustes C. Arcobacter molluscorum sp. nov., a new species isolated from
shellfish. Syst Appl Microbiol 2011; 34:105-109. - Isabel Schober, Julia Koblitz, Joaquim Sardà Carbasse, Christian Ebeling, Marvin Leon Schmidt, Adam Podstawka, Rohit Gupta,
Vinodh Ilangovan, Javad Chamanara, Jörg Overmann, Lorenz Christian Reimer, BacDive in 2025: the core database for
prokaryotic strain data, Nucleic Acids Research, Volume 53, Issue D1, 6 January 2025, Pages D748–D756, https://doi.org/10.
1093/nar/gkae959 - Whiteduck-Leveillee K, Whiteduck-Leveillee J, Cloutier M, Tambong JT, Xu R, Topp E, Arts MT, Chao J, Adam Z, Andre Levesque
C, et al. Arcobacter lanthieri sp. nov., isolated from pig and dairy cattle manure. Int J Syst Evol Microbiol 2015; 65:2709-2716.
Positive results for alkaline phosphatase, catalase, nitrate reduction, and oxidase.
Negative results for casein hydrolysis, lecithinase, starch hydrolysis, hippurate hydrolysis, H2S production on TSI, indoxyl acetate
hydrolysis, urease and Voges-Proskauer test.
Negative results for casein hydrolysis, lecithinase, starch hydrolysis, hippurate hydrolysis, H2S production on TSI, indoxyl acetate
hydrolysis, urease and Voges-Proskauer test.
(c) Costin Stoica
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