Resistance to oxytetracycline, oxolinic acid and furazolidone in bacteria from marine sediments

Nygaard, Kari; Lunestad, Bjørn Tore; Hektoen, Halvor; Berge, John Arthur; Hormazábal, Víctor

doi:10.1016/0044-8486(92)90135-8

Cited by 84 publications

(44 citation statements)

References 17 publications

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“…In a study of antibacterial agents in sediments around fish farms in Italy (Lalumera et al, 2004), it was likewise found that oxytetracycline and flumequine could be detected in sediments 2 years and 8 months, respectively, after the last therapeutic application of these in the pond culture farm. This is also in accordance with earlier studies by Nygaard et al (1992), Lunestad et al (1993) and Hektoen et al (1995) who have all found that oxolinic acid, oxytetracycline and flumequine were stable, especially in the deeper sediment layers. The samples were analysed in duplicate, and the mean values are presented along with the two individual replicate results.…”

Section: Antibiotics In Sedimentssupporting

confidence: 82%

Chemicals from Marine Fish Farms

Gustavson¹,

Petersen²,

Jørgensen³

et al. 2009

TemaNord

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Section: Antibiotics In Sedimentssupporting

confidence: 82%

Chemicals from Marine Fish Farms

Gustavson¹,

Petersen²,

Jørgensen³

et al. 2009

TemaNord

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“…The impact of these substances on the resident microflora is difficult to assess because of the complexity of the aquatic environment, while the resistance patterns of bacterial fish pathogens often reflect an intensive use of antimicrobial substances (7,38,44). Numerous investigators have attempted to elucidate the occurrence and persistence of antibiotic resistance, mostly in marine aquaculture production systems, which predominate in the production of salmonids (19,25,32,40). In contrast, the predominant type of aquacultural production in Denmark is freshwater inland farming, and fewer data are available in this area (12,14,30,41).…”

mentioning

confidence: 99%

Occurrence of Antimicrobial Resistance in Fish-Pathogenic and Environmental Bacteria Associated with Four Danish Rainbow Trout Farms

Schmidt¹,

Bruun²,

Dalsgaard

et al. 2000

Appl Environ Microbiol

324

221

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Surveillance of bacterial susceptibility to five antimicrobial agents was performed during a 1-year period in and around four freshwater fish farms situated along a stream in western Denmark. Besides assessing the levels of antibiotic resistance among the culturable fraction of microorganisms in fish, water, and sediment samples, two major fish pathogens (88 Flavobacterium psychrophilum isolates and 134 Yersinia ruckeri isolates) and 313 motile Aeromonas isolates, representing a group of ubiquitous aquatic bacteria, were isolated from the same samples. MICs were obtained applying a standardized agar dilution method. A markedly decreased susceptibility of F. psychrophilum isolates to most antimicrobial agents presently available for use in Danish aquaculture was detected, while the collected Y. ruckeri isolates remained largely sensitive to all therapeutic substances. Comparing the inlet and outlet samples, the increase of the antibiotic-resistant proportions observed among the culturable microflora was more pronounced and statistically significant among the motile aeromonads. High levels of individual and multiple antimicrobial resistances were demonstrated within the collected flavobacteria and aeromonads, thus indicating a substantial impact of fish farming on several groups of bacteria associated with aquacultural environments.

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“…Antibiotics have both quantitative and qualitative effects on the native microbial communities in soil environment (Nygaard et al, 1992). Although antibiotic concentrations in most soils are not at therapeutic levels to cause inhibitory effects on bacterial population, it may still influence the selection of antibiotic resistant bacteria in the niche (USEPA, 2002).…”

Section: Coastal Environmentmentioning

confidence: 99%

“…The issue of antibiotic resistance was extensively addressed in the scientific literature describing the presence of antibiotics in the environment (e.g. Nygaard et al, 1992;Samuelsen et al, 1992). But, a comprehensive review on the emergence of antibiotic resistance strains from the aquatic habitat is still scanty.…”

Section: Introductionmentioning

confidence: 99%