Antibiotic resistance of neustonic and planktonic fecal coliform bacteria isolated from two water basins differing in the level of pollution

Piotr Skórczewsk, Zbigniew Jan Mudryk, Marta Jankowska, Piotr Perli?ski, Marta Zdanowicz


Antibiotic resistance of fecal coliform bacteria isolated from the surface microlayer and the subsurface layer of a polluted pond and a non-polluted lake was studied. On the basis of the conducted studies it was stated that the isolated fecal coliform bacteria from both aquatic basins showed various resistance to tested antibiotics. Enteric bacteria were the most resistant to ampicillin, clindmycin, novobiocin, penicillin and the most sensitive to amikacin, gentamycin, neomycin and oxytetracycline. Fecal coliform bacteria inhabiting the pond showed similar resistance to the majority of tested antibiotics than coliform bacteria isolated from the lake. The multiple antibiotic resistance (MAR) index value for fecal coliform bacteria was higher in the pond than the lake. Only in a downtown pond fecal coliform bacteria isolated from the subsurface water were more resistant to tested antibiotics than those inhabiting the surface microlayer. The antibiotic resistance level of the bacteria depended on the chemical structure of antibiotics.

Palabras clave

Antibiotic resistance; bacteria; fecal coliform; pollution

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