Fish farm effluents as a source of antibiotic resistance gene dissemination on Jeju Island, South Korea
| Autor: | Hyejun Jo, Adeel Farooq, Shahbaz Raza, Jungman Kim, Tatsuya Unno |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Islands
010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis Fish farming Fisheries Drug Resistance Microbial General Medicine 010501 environmental sciences Biology Toxicology biology.organism_classification Photobacterium 01 natural sciences Pollution Vibrio Resistome Anti-Bacterial Agents Fishery Antibiotic resistance Microbial population biology Genes Bacterial Republic of Korea Seawater Tenacibaculum 0105 earth and related environmental sciences |
| Zdroj: | Environmental pollution (Barking, Essex : 1987). 276 |
| ISSN: | 1873-6424 |
| Popis: | The abuse or misuse of antibiotics is directly linked to the emergence of antibiotic-resistant bacteria and antibiotic resistance genes (ARGs) in the environment. Most fish farms located on Jeju Island operate a flow-through system that pumps in seawater for fish farming and discharges it back to the ocean. To investigate the amount of ARGs that these fish farm effluents discharge into the marine environment, we conducted a metagenomic-based resistome analysis. We observed higher levels of ARGs in fish farm effluents than in seawater at beach and residential areas. A greater proportion of ARGs was found on plasmid rather than on chromosomal DNA, especially for sulfonamide and phenicol classes. The distribution of ARGs did not differ between summer and winter, but the microbial community did. In addition, fish farm samples contained significantly more opportunistic pathogens (i.e., Vibrio, Photobacterium, Aliivibrio, and Tenacibaculum) and virulence factors than non-fish farm samples. Vibrio was the most frequently identified host of ARGs and virulence factors. The presence of Vibrio in the coastal area has been increasing owing to the recent rise in the temperature of seawater. This study suggests the need for actions to treat or monitor ARGs in the coastal areas where fish farms operating a flow-through system are located. |
| Databáze: | OpenAIRE |
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