期刊
CHEMOSPHERE
卷 196, 期 -, 页码 115-119出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2017.12.108
关键词
Bacterial community composition; Antibiotic resistance genes; Aquatic environments; Wild fishes
资金
- 1st Interdisciplinary Water Research Projects ICRA Grants Program (RES2 project)
- Generalitat de Catalunya [2014 SGR 291]
- Spanish Ministry of Economy and Competitiveness through the SCARCE project [CSD2009-00065]
- Ramon y Cajal program [RYC-2011-08154, RYC-2014-16707]
- European Union through the European Regional Development Fund (FEDER)
This study was aimed to determine the abundance of four antibiotic resistance genes (bla(TEM), ermB, qnrS and sulI), as well as bacterial community composition associated with the intestinal mucus of wild freshwater fish species collected from the Foix and La Llosa del Cavall reservoirs, which represent ecosystems with high and low anthropogenic disturbance, respectively. Water and sediments from these reservoirs were also collected and analyzed to determine the pollution level by antibiotics. The bla(TEM) gene was only detected in brown trout and Ebro barbel, which were collected from La Llosa del Cavall reservoir. In contrast, the sulI and qnrS genes were only detected in common carp, which were collected from the Foix reservoir. Although the ermB gene was also detected in common carp, the values were below the limit of quantification. Likewise, water and sediment samples from the Foix reservoir had higher concentrations and more classes of antibiotics than those from La Llosa del Cavall. Pyrosequencing analysis of 16S rRNA genes revealed significant differences in bacterial communities associated with the intestinal mucus of fish species. Therefore, these findings suggest that anthropogenic activities are not only increasing the pollution of aquatic environments, but also contributing to the emergence and spread of antibiotic resistance in organisms that inhabit such environments. (C) 2017 Elsevier Ltd. All rights reserved.
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