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

Overview


  • Aeromonas hydrophila subsp. hydrophila is a Gram-negative, non-spore-forming, facultatively anaerobic, motile, rod-shaped bacterium. Aeromonas hydrophila subsp. hydrophila is likely to be transient and not a long-term gut coloniser. (Huys2002; Igbinosa2012; MartinCarnahan2005Bergey)



  • This organism has been recovered from human faeces (CCUG). 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. Likely to be transient and not a long-term gut commensal.

  • QUIRKS
  • Borderline cold mesophile, with optimum growth temp of 28C. Unlikely gut coloniser.

  • GENERAL CHARACTERISTICS (Huys2002); (Igbinosa2012); (MartinCarnahan2005Bergey);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin;
  • 🌡
  • Temperature tolerance:
  • grows at 41℃; Grows optimally at 28℃.
  • H+
  • Acid from carbohydrates usually produced:
  • L-arabinose; glucose; sucrose; mannitol; salicin;
  • Substrates assimilated or utilised:
  • L-arabinose; arbutin; mannitol; salicin; sucrose; alanine; serine; DL-lactate; putrescine;
  • Active enzymes:
  • arginine dihydrolase; catalase; lycine decarboxylase; oxidase;

  • SPECIAL FEATURES (Huys2002); (Igbinosa2012); (MartinCarnahan2005Bergey);
    Character Response
  • Metabolites produced:
  • indole;
  • Metabolites not produced:
  • H₂S;
  • VP test:
  • active
  • KCN growth:
  • growth observed
  • NO3➔NO2:
  • reduced

  • RESPONSE TO ANTIBIOTICS (Igbinosa2012); (MartinCarnahan2005Bergey);
    Class Active Resistant
  • Penicillins:
  • aztreonam; imipenem;
  • ampicillin; carbenicillin; penicillin; piperacillin;
  • Cephalosporins:
  • cefepime; cefixime; cefotaxime; ceftazidime; cefuroxime;
  • cephalothin;
  • Tetracyclines:
  • minocycline;
  • Quinolines:
  • levofloxacin; ofloxacin;
  • Aminoglycosides:
  • amikacin; gentamicin; kanamycin; netilmycin; sisomicin; tobramycin;
  • Heterocycles:
  • chloramphenicol;
  • co-trimoxazole;

  • Details


    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Aeromonadales Family:  Aeromonadaceae Genus:  Aeromonas Gram stain:  neg O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Swimming Morphology:  Rod
    Health:  Unknown
    Source:  human faeces (CCUG)
    Opt. T:  28℃
    High T(℃):  41(+)
    Aesculin:  + Urea:  neg

    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    L-Arabinose:  + Glucose:  + Rhamnose:  neg Cellubiose:  neg Lactose:  neg Sucrose:  + Mannitol:  + Sorbitol:  neg Salicin:  +

    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    L-Arabinose:  + Cellubiose:  neg Sucrose:  + Arbutin:  + Mannitol:  + Salicin:  + Ala:  + β-Ala:  neg 4-Aminobutyrate:  neg Ser:  + DL-Lactate:  +

    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Oxidase:  + Catalase:  + Urease:  neg ArgDH:  + LysDC:  + OrnDC:  neg TrpAA:  neg

    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)
    penicillin:  Res
    piperacillin:  Res
    imipenem:  Sens
    cefepime:  Sens
    cefixime:  Sens
    cefotaxime:  Sens
    ceftazidime:  Sens
    cefuroxime:  Sens
    cephalothin:  R(30; disc)
    amikacin:  SensRNG: (0.5-2)
    gentamicin:  SensRNG: (0.5-2)
    kanamycin:  Sens
    netilmycin:  SensRNG: (0.25-4)
    sisomicin:  SensRNG: (0.25-2)
    streptomycin:  Var
    tobramycin:  SensRNG: (0.25-4)
    levofloxacin:  Sens
    nalidixic-acid:  Var
    ofloxacin:  Sens
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    minocycline:  Sens
    tetracycline:  Var
    chloramphenicol:  Sens
    co-trimoxazole:  Res
    colistin:  Var(MIC50): 4; disc), MIC90: Var(4; disc

    References


    SPECIFIC REFERENCES FOR AEROMONAS HYDROPHILA SUBSP. HYDROPHILA
  • Huys2002 - Aeromonas hydrophila subsp. dhakensis subsp. nov., isolated from children with diarrhoea in Bangladesh, and extended description of Aeromonas hydrophila subsp. hydrophila (Chester 1901) Stanier 1943 (Approved Lists 1980).
  • Igbinosa2012 - Emerging Aeromonas Species Infections and Their Significance in Public Health.
  • MartinCarnahan2005Bergey - Bergey's manual of systematic bacteriology. Vol. 2, The Gammaproteobacteria Part B. Family Aeromonadaceae, Genus I. Aeromonas
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  • GENERAL REFERENCES FOR AEROMONAS HYDROPHILA SUBSP. HYDROPHILA
  • CCUG - Culture Collection University of Gothenburg - Entire Collection
  • Igbinosa2012 - Emerging Aeromonas Species Infections and Their Significance in Public Health.