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Related Experiment Videos

Aeromonas simiae sp. nov., isolated from monkey faeces.

Colette Harf-Monteil1, Anne Le Flèche2, Philippe Riegel1

  • 1Institute of Bacteriology UPRES-EA 3432, Louis Pasteur University, Strasbourg University Hospital, 3 rue Koeberlé, F-67000 Strasbourg, France.

International Journal of Systematic and Evolutionary Microbiology
|March 17, 2004
PubMed
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Two new Aeromonas monkey strains were identified as Aeromonas simiae sp. nov. These novel bacteria, isolated from healthy macaques, possess unique genetic and phenotypic traits differentiating them from known Aeromonas species.

Area of Science:

  • Microbiology
  • Bacteriology
  • Primate Health

Background:

  • The genus Aeromonas comprises various bacteria, some of which are opportunistic pathogens.
  • Understanding bacterial diversity in animal hosts is crucial for public health and ecological studies.

Purpose of the Study:

  • To characterize and classify two novel Aeromonas isolates from macaque feces.
  • To determine the phylogenetic and phenotypic distinctiveness of these isolates within the Aeromonas genus.

Main Methods:

  • Phylogenetic analysis using 16S rRNA gene sequencing.
  • DNA-DNA hybridization for genetic relatedness assessment.
  • Phenotypic characterization including biochemical tests and hemolysis assays.

Main Results:

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  • The two isolates, IBS S6874(T) and IBS S6652, formed a distinct lineage within Aeromonas.
  • High DNA-DNA similarity (89%) between isolates, but low similarity to related species (16-18%).
  • Unique phenotypic profile: lack of hemolysis, indole, gas from glucose, acid from mannitol; presence of pyrazinamidase activity and acid production from D-cellobiose/D-sucrose.

Conclusions:

  • The isolates represent a novel species, Aeromonas simiae sp. nov., with IBS S6874(T) as the type strain.
  • Aeromonas simiae is phenotypically and genetically distinct from other known mesophilic Aeromonas species.
  • This finding expands the known diversity of Aeromonas in primate hosts.