Characterization of Aeromonas and Vibrio species isolated from a drinking water reservoir.
OBJECTIVE
To study the phenotypic and chemotaxonomic (i.e. phospholipid and cellular fatty acid composition) characteristics of environmental Aeromonas spp. and Vibrio spp. isolated from a drinking water reservoir near Vladivostok City, and the application of some chemotaxonomic markers for discrimination of the two genera and species.


RESULTS
Presumptive Aeromonas species were dominant in surface water samples (up to 25% of the total number of bacteria recovered). These strains were consistent with respect to the cultural and biochemical properties used to define the species Aeromonas sobria (seven strains) and Aer. popoffii (three strains). Vibrio mimicus (two strains) and Vibrio metschnikovii (one strain) were identified according to phenotypic features and cellular fatty acid composition.


CONCLUSIONS
Environmental Aer. sobria isolates were atypical in their ability to grow at 42 degrees C, and were haemolytic, proteolytic and cytotoxic. Although it was present in a high proportion in the water samples, atypical Aer. sobria is not an indicator of polluted water.


CONCLUSIONS
The incidence of Aeromonas in the drinking water reservoirs in the Far East of Russia is reported for the first time.
Ivanova
E P
EP
Pacific Institute of Bio-organic Chemistry of the Far-Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia. elenaivanova33@hotmail.com
Zhukova
N V
NV
Gorshkova
N M
NM
Chaikina
E L
EL
D000333:Aeromonas / Q000145:classification / Q000302:isolation & purification*; D015373:Bacterial Typing Techniques; D005202:Asia, Eastern; D005227:Fatty Acids / Q000032:analysis; D005618:Fresh Water; D010641:Phenotype; D010743:Phospholipids / Q000032:analysis; D012426:Russia; D014733:Vibrio / Q000145:classification / Q000302:isolation & purification*; D014871:Water Microbiology; D014881:Water Supply
D005227:Fatty Acids; D010743:Phospholipids