First evidence of microplastics in freshwater from fish farms in Rondônia state, Brazil

Filho, Jerônimo Vieira Dantas; Pedroti, Vinícius Perez; Santos, Bruna Lucieny Temponi; Pinheiro, Maria Mirtes de Lima; Mira, Átila Bezerra de; Silva, Francisco Carlos da; Silva, Emerson Carlos Soares e; Cavali, Jucilene; Guedes, Élica Amara Cecília; Schons, Sandro de Vargas

doi:10.1016/j.heliyon.2023.e15066

Cited by 9 publications

(5 citation statements)

References 35 publications

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“…The presence of MPs was reported in the waters of the Amazon continental shelf [ 20 ], as well as in samples from freshwater sources in the Amazon basin, including the Amazon, Negro, Tapajós, and Tocantins rivers and in urban streams [ 21 , 41 ]. The presence of these pollutants was also investigated in manmade freshwater fish-farming enclosures [ 42 ]. MPs were quantified in sediments from the beds of the Negro, Solimões, and Amazon rivers [ 19 ], sandy estuarine beaches [ 18 , 43 ], and a river beach [ 44 ].…”

Section: Resultsmentioning

confidence: 99%

“…Different studies obtained water samples for analysis using plankton nets (45, 55, and 300 μm mesh), by surface trawling [ 41 , 42 ], filtering surface-water samples collected in a metal bucket [ 20 ], or with a water pump [ 21 ]. The samples were analyzed using stereomicroscopy, in natura [ 41 ] or after passing the samples through metal sieves [ 42 ] or vacuum filtration [ 20 ]. In some cases, the samples underwent additional processing by sieving, digestion, and flotation [ 21 ].…”

Section: Resultsmentioning

confidence: 99%

“…Mean MP concentrations in the sediments varied from 667,200 particles.m −3 in the Amazon River to 13,084.8 × 10 3 particles.m −3 in the Negro River [ 19 ]. In the water of the middle basin, mean values varied from 0.25 particles.m −3 in the Tapajós River [ 41 ] to 170,666.7 particles.m −3 in the Madeira River basin [ 42 ]. Furthermore, a total of 32 plastic polymers have been reported from the water of this region [ 21 , 41 ].…”

Section: Resultsmentioning

confidence: 99%

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Microplastics in the Amazon biome: State of the art and future priorities

Morais,

Queiroz,

Brito

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Microplastics in the Amazon biome: State of the art and future priorities

Morais,

Queiroz,

Brito

et al. 2024

Heliyon

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“…Therefore, surface water pollution is an environmental problem worldwide because fish farm ponds represent artificial environments with a constant high concentration of organic matter. In addition, these cultivation environments receive significant volumes of industrial, agricultural and domestic effluents [ 30 ]. Most aquatic organisms can respond directly to changes in the physical, chemical and biological profile of freshwater [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

Monitoring of Mycotoxigenic Fungi in Fish Farm Water and Fumonisins in Feeds for Farmed Colossoma macropomum

Sousa Terada-Nascimento,

Vieira Dantas-Filho,

Temponi-Santos

et al. 2023

Toxics

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This study aimed to evaluate the occurrence of mycotoxigenic fungi in fish farm water and mycotoxins in feeds for farmed tambaqui (Colossoma macropomum). A total of 40 samples of freshwater from fish farms and 16 samples of feed were collected and analyzed for microbiology. A total of five species of free-living fungi were identified in fish farms: Aspergillus fumigatus, Penicillium citrinum, P. implicatum, Fusarium oxysporum and Alternaria alternata. These fungi species were counted in water samples at 35.14 CFU mL−1 and 24.69 CFU mL−1 in the dry seasons. In all fish farms, there was a higher abundance of fungi species in the rainy season. During visits to the fish farmers, it was possible to verify poor feed storage conditions. Concerning mutations in blood cells, in tambaqui (C. macropomum), a total of 159 anomalies were found, and in Leptodactylus petersii, 299 anomalies were found, with higher incidences in conditions above 1.0 CFU mL−1 in log10(x+1) fungi and in the rainy season. The occurrence of mycotoxicological contamination was confirmed in 81.25% of the analyzed samples. The quantified mycotoxin was Fumonisins B1 + B2 (375 to 1418 μg kg−1). Pearson’s correlation analysis showed a significant positive correlation between Fumonisins and feed samples (r = 0.83). There was also a significant positive correlation between the abundance of fungi in water and the quantification of Fumonisins (r = 0.79). Based on the results obtained, it can be concluded that free-living fungi can be used as bioindicators of water quality in fish farms. Consequently, the lack of good management practices caused microbiological contamination of the aquatic environment.

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“…The latter is a very serious situation; for example, China is the world's largest producer of aquaculture, accounting for more than 60% of global production by volume [4]. Microplastic contamination can cause damage to the water quality of fish farm ponds and also affect the quality of the final product [5]. Therefore, the degradation of plastics or microplastics has become a pivotal point in relation to the ecological system.…”

Section: Introductionmentioning

confidence: 99%

The characteristics of the novel bacterial strain Pseudomonas mendocina isolated from freshwater aquaculture farm

Kai Yan,

Shuai Wei,

Haifeng Wang

2024

Cell Mol Biol (Noisy-le-grand)

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Plastic contamination can cause damage to the water quality of fish farm ponds, and also affect the quality of the final product. Pseudomonas mendocina was found to biodegrade plastics. Our study aimed to investigate the physicochemical properties and drug resistance of P. mendocina isolated from local freshwater aquaculture farms. Firstly, the strain was isolated from aquaculture water and then identified by matrix-assisted flight mass spectrometry and 16S rDNA sequencing. Then, biochemical and antibiotic resistance analyses were performed, and a microbial high-throughput growth detector was used to assess the growth of the strain. Finally, PCR and proteomics analyses were conducted to determine drug-resistance-related genes/proteins. According to the results of the spectrum diagram and sequencing, the isolated bacteria were identified as P. mendocina, and were positive for reactions of ADH, MTE, LAC, MNE, FRU, CIT, MLT, ONPG, and ACE. P. mendocina was sensitive to most of the antibiotics, and its resistance to CHL, MIN, and TIC/CLA was intermediate. Additionally, gyrB was the resistance gene, and mdtA2, mdtA3, mdaB, and emrK1 were closely related to the drug resistance of P. mendocina. Our results show the biochemical properties of P. mendocina in isolated aquaculture water, and provide a new perspective for P. mendocina involved in the biological removal of plastics or microplastics in freshwater aquaculture farms.

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First evidence of microplastics in freshwater from fish farms in Rondônia state, Brazil

Cited by 9 publications

References 35 publications

Microplastics in the Amazon biome: State of the art and future priorities

Microplastics in the Amazon biome: State of the art and future priorities

Monitoring of Mycotoxigenic Fungi in Fish Farm Water and Fumonisins in Feeds for Farmed Colossoma macropomum

The characteristics of the novel bacterial strain Pseudomonas mendocina isolated from freshwater aquaculture farm

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