Aeromonas caviae

(aka Pseudomonas caviae)

Bacteria
General | Carbohydrate O/F | Substrate utilisation | Enzymes | Metabolites | Antibiotics

Overview

  • Aeromonas caviae, (aka Pseudomonas caviae), is a Gram-negative, non-spore-forming, anaerobic, motile, rod-shaped bacterium. It has been detected in at least 5 gut microbiome compilation studies or metastudies. The DNA G+C content is 61-63%. Aeromonas caviae is likely to be transient and not a long-term gut coloniser. (Igbinosa2012; Krzyminska2001; Schubert1988; MartinCarnahan2005Bergey; Scherago1937)



  • This organism has been recovered from human faeces (CCUG), clinical sources (blood, wound - CCUG), sewage, animals and aquatic sources. The risk classification (www.baua.de) for this organism is 2, i.e., risk of individual infection, but low risk of spread (notes: human and animal pathogen). Is a known human pathogen. A possible gut commensal.
    • QUIRKS
  • Pathogenic; unlikely to be a coloniser in a healthy microbiome.
    • GENERAL CHARACTERISTICS (Igbinosa2012); (Schubert1988); (MartinCarnahan2005Bergey); (Scherago1937);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin; gelatin;
  • ±
  • Strain-dependent hydrolysis or digestion:
  • milk;
  • H+
  • Acid from carbohydrates usually produced:
  • arabinose; L-arabinose; galactose; glucose; starch; maltose; sucrose; trehalose; glycerol; mannitol; salicin;
  • ⥅
  • Substrates assimilated or utilised:
  • citrate; DL-lactate;
  • Active enzymes:
  • arginine dihydrolase; N-Ac β-glucosaminidase; catalase; esterase C4; esterase lipase C8; β-galactosidase; β-glucosidase; Leu arylamidase; oxidase;
    • SPECIAL FEATURES (Igbinosa2012); (Schubert1988); (MartinCarnahan2005Bergey); (Scherago1937);
    Character Response
  • ✓
  • Metabolites produced:
  • indole;
  • ✗
  • Metabolites not produced:
  • H₂S;
  • ✗
  • VP test:
  • not active
  • ✗
  • Haemolysis:
  • absent
  • ✓
  • Nitrate:
  • reduced
    • RESPONSE TO ANTIBIOTICS (Igbinosa2012); (Schubert1988); (MartinCarnahan2005Bergey);
    Class Active Resistant
  • Penicillins:
  • aztreonam; imipenem;
  • ampicillin; carbenicillin; piperacillin;
  • Cephalosporins:
  • cefepime; cefixime; cefotaxime; ceftazidime;
  • cephalothin;
  • Tetracyclines:
  • tetracycline;
  • Quinolines:
  • ofloxacin;
  • Aminoglycosides:
  • amikacin; gentamicin; tobramycin;
  • Heterocycles:
  • co-trimoxazole;
  • Miscellaneous antibiotics:
  • colistin;

  • Aeromonas caviae is associated with gastrointestinal disease; chronic diarrhea in adults; acute, severe disease in children and keratitis associated with contact lens wear.

  • Kirov, S. M., O’Donovan, L. A., & Sanderson, K. (1999). Functional characterization of type IV pili expressed on diarrhea-associated isolates of Aeromonas species. Infection and Immunity, 67(10), 5447–5454.

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Aeromonadales Family:  Aeromonadaceae Genus:  Aeromonas Alt. name:  Pseudomonas caviae Gram stain:  neg O2 Relation.:  anaerobic Spore:  No spore Motility:  Swimming Morphology:  Rod
    Health:  Unknown
    Source:  human faeces (CCUG), clinical sources (blood, wound - CCUG), sewage, animals and aquatic sources
    DNA G+C(%):  61-63
    		Aesculin:  + Urea:  neg Gelatin:  + Milk:  curdle
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Arabinose:  + L-Arabinose:  + Galactose:  + Glucose:  + Rhamnose:  neg Xylose:  neg Cellubiose:  vr Lactose:  w Maltose:  + Sucrose:  + Trehalose:  + Inulin:  neg Starch:  + Adonitol:  neg D-Arabitol:  neg L-Arabitol:  neg Dulcitol:  neg Glycerol:  + Inositol:  neg Mannitol:  + Sorbitol:  neg 5-Ketogluconate:  neg Salicin:  +
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Melibiose:  neg Citrate:  + DL-Lactate:  +
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Urease:  neg Ac-β-glcamnd:  + α-Fucosidase:  neg α-Galactosidase:  neg β-Galactosidase:  + α-Glucosidase:  neg β-Glucosidase:  + β-Glucuronidase:  neg α-Mannosidase:  neg ArgDH:  + LysDC:  neg OrnDC:  neg LeuAA:  + AlkalineP:  vr AcidP:  vr Esterase(C4):  + EstLip(C8):  + Lipase:  vr Lipase(C14):  vr
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		H2S:  neg Indole:  +
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    ampicillin:  R(10; disc)
    aztreonam:  Sens
    carbenicil:  R(30; disc)
    piperacillin:  Res
    imipenem:  Sens
    cefepime:  Sens
    cefixime:  Sens
    cefotaxime:  Sens
    ceftazidime:  Sens
    cephalothin:  R(30; disc)
    amikacin:  Sens
    gentamicin:  Sens
    tobramycin:  Sens
    ofloxacin:  Sens
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    tetracycline:  Sens
    co-trimoxazole:  Res
    colistin:  S(4; disc)

    References

    SPECIFIC REFERENCES FOR AEROMONAS CAVIAE
  • Igbinosa2012 - Emerging Aeromonas Species Infections and Their Significance in Public Health.
  • Krzyminska2001 - Enhancement of the virulence of Aeromonas caviae diarrhoeal strains by serial passages in mice.
  • Schubert1988 - Aeromonas eucrenophila species nova aeromonas caviae a later and illegitimate synonym of aeromonas punctata.
  • MartinCarnahan2005Bergey - Bergey's manual of systematic bacteriology. Vol. 2, The Gammaproteobacteria Part B. Family Aeromonadaceae, Genus I. Aeromonas
  • Scherago1937 - An Epizootic Septicemia of Young Guinea Pigs Caused by Pseudomonas Caviae, n. sp.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR AEROMONAS CAVIAE
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
  • RajilicStojanovic2014 - The first 1000 cultured species of the human gastrointestinal microbiota.
  • Yang2020 - Species-Level Analysis of Human Gut Microbiota With Metataxonomics.
  • Yang2020a - Establishing high-accuracy biomarkers for colorectal cancer by comparing fecal microbiomes in patients with healthy families
  • Zeller2014 - Potential of fecal microbiota for early-stage detection of colorectal cancer
  • ...............................
    • GENERAL REFERENCES FOR AEROMONAS CAVIAE
  • CCUG - Culture Collection University of Gothenburg - Entire Collection
  • Igbinosa2012 - Emerging Aeromonas Species Infections and Their Significance in Public Health.
    • Added: April 08, 2021