Multidrug-Resistance and Toxic Metal Tolerance of Medically Important Bacteria Isolated from an Aquaculture System
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- Alves Resende Juliana
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora
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- L. Silva Vânia
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora
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- Oliveira Fontes Cláudia
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora
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- Alves Souza-Filho Job
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora
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- Rocha de Oliveira Tamara Lopes
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora
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- Marques Coelho Cíntia
- Department of Biology Institute of Biological Sciences, Federal University of Juiz de Fora
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- Evangelista César Dionéia
- Department of Biology Institute of Biological Sciences, Federal University of Juiz de Fora
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- Galuppo Diniz Cláudio
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora
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Abstract
The use of antimicrobials and toxic metals should be considered carefully in aquaculture and surrounding environments. We aimed to evaluate medically relevant bacteria in an aquaculture system and their susceptibility to antimicrobials and toxic metals. Selective cultures for enterobacteria (ENT), non-fermenting Gram-negative rods (NFR) and Gram-positive cocci (GPC) were obtained from water samples collected in two different year seasons. The isolated bacteria were biochemically identified and antimicrobial and toxic metal susceptibility patterns were determined. Overall, 407 representative strains were recovered. In general, bacteria isolated from fish ponds showed higher multiple antibiotic resistance indices when compared to those isolated from a water-fed canal. Resistance to penicillin and azithromycin was observed more frequently in the GPC group, whereas resistance to ampicillin and ampicillin/sulbactam or gentamicin was observed more frequently in the ENT and NFR groups, respectively. All the isolated bacteria were tolerant to nickel, zinc, chromium and copper at high levels (≥1,024 μg mL−1), whereas tolerance to cadmium and mercury varied among the isolated bacteria (2–1,024 μg mL−1). Multidrug-resistant bacteria were more frequent and diverse in fish ponds than in the water-fed canal. A positive correlation was observed between antimicrobial resistance and metal tolerance. The data point out the need for water treatment associated with the aquaculture system.<br>
Journal
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- Microbes and Environments
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Microbes and Environments 27 (4), 449-455, 2012
Japanese Society of Microbial Ecology / Japanese Society of Soil Microbiology / Taiwan Society of Microbial Ecology / Japanese Society of Plant Microbe Interactions / Japanese Society for Extremophiles
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Details 詳細情報について
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- CRID
- 1390001204346910848
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- NII Article ID
- 10031125943
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- NII Book ID
- AA11551577
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- COI
- 1:STN:280:DC%2BC38bmsVWrsg%3D%3D
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- ISSN
- 13474405
- 13426311
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- NDL BIB ID
- 024116705
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- PubMed
- 22972388
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed