Aeromonas dhakensis

(aka Aeromonas aquariorum)

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

Overview

  • Aeromonas dhakensis, (aka Aeromonas aquariorum), is a Gram-negative, non-spore-forming, facultatively anaerobic, motile, rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. Aeromonas dhakensis is probably a rare gut coloniser. (BeazHidalgo2013; Huys2002; MartinezMurcia2008)



  • This organism has been recovered from human faeces (diarrhoea - Huys2002) and clinical sources (wound - CCUG). The risk classification (www.baua.de) for this organism is 1, i.e., low risk of infection and spread. Can cause opportunistic infections, particularly in immunocompromised people. It's gut microbiome symbiotic status is unknown.
    • GENERAL CHARACTERISTICS (BeazHidalgo2013); (Huys2002); (MartinezMurcia2008);
    Character Response
  • Substrates hydrolysed or digested:
  • aesculin; casein; gelatin; starch;
  • 🧂
  • Salt tolerance:
  • tolerates 0% salt; tolerates 3% salt;
  • 🌡
  • Temperature tolerance:
  • Grows optimally at 30-37℃.
  • H+
  • Acid from carbohydrates usually produced:
  • fructose; galactose; glucose; mannose; ribose; glycogen; maltose; sucrose; trehalose; glycerol; mannitol; arbutin; gluconate; α-methyl glucoside; N-Ac glucosamine; salicin;
  • ⥅
  • Substrates assimilated or utilised:
  • cysteine; DL-lactate;
  • Active enzymes:
  • arginine dihydrolase; catalase; lycine decarboxylase; oxidase;
    • SPECIAL FEATURES (BeazHidalgo2013); (Huys2002); (MartinezMurcia2008);
    Character Response
  • ✓
  • Metabolites produced:
  • H₂S; indole;
  • ✓
  • VP test:
  • active
  • ✓
  • ONPG test:
  • active
  • Haemolysis:
  • beta
  • ✓
  • NO3➔NO2:
  • reduced
  • ✓
  • Thiosulfate:
  • reduced
    • RESPONSE TO ANTIBIOTICS (BeazHidalgo2013); (MartinezMurcia2008);
    Class Active Resistant
  • Penicillins:
  • aztreonam; imipenem;
  • amoxicillin; amoxicillin-clavulanic acid; ampicillin; carbenicillin; piperacillin; piperacillin-tazobactam; ticarcillin;
  • Cephalosporins:
  • cefepime; cefixime; cefoperazone; cefotaxime; ceftazidime; cefuroxime;
  • cefoxitin; cephalothin;
  • Macrolides:
  • erythromycin;
  • Tetracyclines:
  • minocycline; tetracycline;
  • Quinolines:
  • ciprofloxacin; levofloxacin; norfloxacin;
  • Aminoglycosides:
  • amikacin; gentamicin; netilmycin;
  • tobramycin;
  • Heterocycles:
  • chloramphenicol; trimethoprim-sulfamethoxazole;
  • Miscellaneous antibiotics:
  • vibriostatin A 0 129;

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Proteobacteria Class:  Gammaproteobacteria Order:  Aeromonadales Family:  Aeromonadaceae Genus:  Aeromonas Alt. name:  Aeromonas aquariorum Gram stain:  neg O2 Relation.:  facultatively anaerobic Spore:  No spore Motility:  Swimming Morphology:  Rod
    Health:  Unknown
    Source:  human faeces (diarrhoea - Huys2002) and clinical sources (wound - CCUG)
    Opt. T:  30-37℃
    NaCl 0.5-2%:  0(+)
    NaCl 3-5%:  3(+)
    		Aesculin:  + Gelatin:  + Starch:  + Casein:  +
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    Arabinose:  neg D-Arabinose:  neg L-Arabinose:  neg Fructose:  + Fucose:  neg D-Fucose:  neg Galactose:  + Glucose:  + Mannose:  + D-Lyxose:  neg Rhamnose:  neg Ribose:  + Sorbose:  neg D-Tagatose:  neg Xylose:  neg L-Xylose:  neg Cellubiose:  neg Gentiobiose:  neg Lactose:  neg Maltose:  + Melezitose:  neg Melibiose:  neg Sucrose:  + Trehalose:  + Turanose:  neg Amygdalin:  neg Glycogen:  + Inulin:  neg Adonitol:  neg D-Arabitol:  neg L-Arabitol:  neg Dulcitol:  neg Erythritol:  neg Glycerol:  + Inositol:  neg Mannitol:  + Sorbitol:  neg Xylitol:  neg Arbutin:  + Gluconate:  + 2-Ketogluconate:  neg 5-Ketogluconate:  neg Me-α-D-Glc:  + Me-α-D-Mann:  neg Me-Xyloside:  neg NAc-α-GA:  + Salicin:  +
    SUBSTRATE ASSIMILATION & UTILISATION
    Monosaccharide util/assim Oligosaccharide util/assim Other carboh. util/assim Amino acid util/assim Organic acid util/assim
    Cys:  + 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:  + Indole:  +
    ANTIBIOTICS ℞
    Penicillins & Penems (μg/mL) Cephalosporins (μg/mL) Aminoglycosides (μg/mL) Macrolides (μg/mL) Quinolones (μg/mL)
    amoxicillin:  R(10; disc)
    Augmentin:  R(30; disc)
    ampicillin:  R(10; disc)
    aztreonam:  S(30; disc)
    carbenicil:  R(100; disc)
    piperacillin:  R(100; disc)
    piper-taz:  R(110; disc)
    ticarcillin:  R(75; disc)
    tica-clav:  Var(MIC50): 85; disc), MIC90: Var(85; disc
    imipenem:  S(10; disc)
    cefepime:  S(30; disc)
    cefixime:  Sens
    cefoperazone:  Sens
    cefotaxime:  S(30; disc)
    cefoxitin:  Res
    ceftazidime:  Sens
    cefuroxime:  Sens
    cephalothin:  R(30; disc)
    amikacin:  S(30; disc)
    gentamicin:  S(10; disc)
    kanamycin:  Var(MIC50): 30; disc), MIC90: Var(30; disc
    netilmycin:  S(30; disc)
    tobramycin:  R(10; disc)
    erythromycin:  R(15; disc)
    ciprofloxacin:  S(5; disc)
    levofloxacin:  Sens
    norfloxacin:  S(10; disc)
    Tetracyclines (μg/mL) Vancomycin Class (μg/mL) Polypep/ketides (μg/mL) Heterocycles (μg/mL) Other (μg/mL)
    minocycline:  Sens
    tetracycline:  S(30; disc)
    chloramphenicol:  S(30; disc)
    SXT:  S(25; disc)
    vibriostat_129:  Res

    References

    SPECIFIC REFERENCES FOR AEROMONAS DHAKENSIS
  • BeazHidalgo2013 - Reclassification of Aeromonas hydrophila subsp. dhakensis Huys et al. 2002 and Aeromonas aquariorum Martinez-Murcia et al. 2008 as Aeromonas dhakensis sp. nov. comb nov. and emendation of the species Aeromonas 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).
  • MartinezMurcia2008 - Aeromonas aquariorum sp. nov., isolated from aquaria of ornamental fish.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR AEROMONAS DHAKENSIS
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
  • ...............................
    • GENERAL REFERENCES FOR AEROMONAS DHAKENSIS
  • CCUG - Culture Collection University of Gothenburg - Entire Collection
    • Added: July 12, 2021