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Studies of Drug-resistant Bacteria isolated from Eel-pond Water and Intestinal Tracts of the Eel (Anguilla japonica and Anguilla anguilla)

1973; Springer Science+Business Media; Volume: 39; Issue: 2 Linguagem: Inglês

10.2331/suisan.39.121

1349-998X

Takashi AOKJ, Tsutomu Watanabe,

Pharmaceutical and Antibiotic Environmental Impacts

A rather wide variety of drug resistant gram-negative bacteria were isolated from the eel-pond water as well as from the intestinal tracts of cultured and wild eels (Anguilla japonica and Anguilla anguilla) in various districts. A fairly high proportion of the drug resistant bacteria isolated were found to carry R factors. Occurrence rate of R factor-carrying bacteria varied in different districts, being high in the Yaizu and Yoshida areas and low in the Hamana-Lake area and in wild eels. R factors were found in Aeromonas liquefaciens, Vibrio and Enterobacteriaceae strains but not in Achromobacter, Alcaligenes, Pseudomonas strains. The drug-resistance markers of the R factors were almost exclusively sulfonamides and tetracycline. This tendency was apparent particularly in A. liquefaciens.