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1 July 1995 DRUG RESISTANCE AND CONJUGATIVE R PLASMIDS IN ESCHERICHIA COLI STRAINS ISOLATED FROM MIGRATORY WATERFOWL
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Abstract

We evaluated drug resistance and R plasmids of 554 strains of Escherichia coli isolated from feces of migratory waterfowl, including whistling swans (Cygnus columbianus), pintails (Anas acuta) and black-tailed gulls (Larus crassirostris) collected from the San-in District, Japan, between each November and March, 1983 to 1984, 1984 to 1985, and 1985 to 1986. Seven antimicrobial agents were tested: dihydrostreptomycin (DSM), kanamycin, spectinomycin, ampicillin (ABPC), oxytetracycline (OTC), chloramphenicol, and sulfadimethoxine (SDMX). Many strains were resistant to several drugs; in particular, all strains were resistant to SDMX. Both multiple drug resistant strains and drug resistance patterns occurred most frequently in strains isolated from whistling swans, followed by black-tailed gulls, and pintails, respectively. Of 233 strains, 128 (55%) carried transmissible R plasmids. The drugs with the largest number of resistance patterns observed were, in descending order, OTC, DSM, ABPC, and SDXM.

Tsubokura, Matsumoto, Otsuki, Animas, and Sanekata: DRUG RESISTANCE AND CONJUGATIVE R PLASMIDS IN ESCHERICHIA COLI STRAINS ISOLATED FROM MIGRATORY WATERFOWL
Misao Tsubokura, Akihisa Matsumoto, Koichi Otsuki, Samuel Baltazar Animas, and Takeshi Sanekata "DRUG RESISTANCE AND CONJUGATIVE R PLASMIDS IN ESCHERICHIA COLI STRAINS ISOLATED FROM MIGRATORY WATERFOWL," Journal of Wildlife Diseases 31(3), 352-357, (1 July 1995). https://doi.org/10.7589/0090-3558-31.3.352
Received: 11 January 1994; Published: 1 July 1995
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