Evaluation of the water quality in a conservation unit in Central-West Brazil: Metals concentrations and genotoxicity in situ

Santos, Silvana Lima dos; Viana, Lucilene Finoto; Merey, Felipe Mendes; Crispim, Bruno do Amaral; Solórzano, Júlio César Jut; Barufatti, Alexéia; Cardoso, Cláudia Andréa Lima; Lima-Júnior, Sidnei Eduardo

doi:10.1016/j.chemosphere.2020.126365

Cited by 18 publications

(7 citation statements)

References 42 publications

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“…The National Toxicology Program (NTP) of the United States recommends the combination of the comet assay and micronucleus test for the most reliable analysis of genotoxicity in animal models, to guarantee the detection of chemical substances that may be potentially harmful to human health (Kang et al, 2013). The identi cation and monitoring of the mutagenic compounds present in the environment are increasingly important, given that these substances may provoke an increase in the incidence of cancer Plagioscion squamosissimus is an important shery resource in the Amazon region, providing subsistence and a source of income for many local populations (Chao et al, 2015;Barbosa et al, 2021), although this species is also an important animal model for the biomonitoring of aquatic environments (Viana et al, 2013;Rocha et al, 2016), given its sensitivity to toxic substances, as well as its relative abundance in most areas (Jonsson and Castro, 2005;Santos et al, 2020). In the present study, signi cantly higher levels of damage were recorded in the P. squamosissimus treatment (contaminated) group in comparison with the control in both the comet assays and the micronucleus test.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the genotoxicity in fish erythrocytes to diagnose the water quality of two Amazonian estuaries using the micronucleus test and comet assay

Oliveira¹,

Souto²,

Palheta³

et al. 2021

Preprint

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Genotoxicity studies in coastal ecosystems have been a priority in Environmental Risk Assessment (ERA). This research aimed to study the genotoxicity by the micronucleus test and comet assay in two Brazilian Amazon estuaries (anthropized and control) using Plagioscion squamosissimus as a bioindicator. Blood samples were collected from 54 specimens. No significant genotoxic effects were detected in the cells analyzed, although the highest occurrence was observed in anthropized site. The percentage of genomic damage differed between the sites studied, being always higher in anthropizes site as well. Of the nucleoids analyzed in this site, on average 28 ± 14.42% of the cells were classified in the highest damage class (4). The fish analyzed in the present study are direct influence of xenobiont agents capable of producing damage to the genetic material of aquatic organisms in both sites and, consequently, may bring consequences still little reported in studies of morphophysiological alterations in humans.

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Section: Discussionmentioning

confidence: 99%

Evaluation of the genotoxicity in fish erythrocytes to diagnose the water quality of two Amazonian estuaries using the micronucleus test and comet assay

Oliveira¹,

Souto²,

Palheta³

et al. 2021

Preprint

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“…The replacement of vegetation cover around aquatic environments by agricultural areas is a major environmental problem, mainly because water bodies are unprotected from pollutants (Gonçalves et al 2019). Dense vegetation cover has a barrier function, dampening the transport of sediments and pollutants into the stream during periods of increased rainfall, thus avoiding silting and imbalance in the structure and functioning of the ecosystem (Castro and Souza 2013;dos Santos et al 2020). In addition, such coverage provides a reduction in eutrophication, promotes the conservation of fauna and ora, and facilitates the in ltration of rainwater into the soil (Tundisi and Tundisi 2010).…”

Section: Discussionmentioning

confidence: 99%

“…In this sense, research related to the toxicological status of aquatic environments is increasingly relevant to understand the biological conditions of organisms that survive in these areas and the genetic damage associated with the presence of contaminants in the water (dos Santos et al 2020;Riveros et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Environmental diagnosis of water quality in situ and ex situ in streams in Upper Paraná River Basin, Brazil

Meira

Silva

Viana

et al. 2021

Preprint

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The aim of this study was to (i) evaluate water quality using limnological parameters in three streams belonging to the Ivinhema River basin, (ii) investigate the composition and structure of the landscape around the locations sampled and their possible contribution to changes in water quality, (iii) investigate genotoxicity in fish in situ as environmental bioindicators, and (iv) evaluate the cytotoxic and genotoxic potential of water through bioassays in animal and plant models. A total of seven fish species were sampled in situ as bioindicators of environmental toxicogenetic damage: Astyanax fasciatus, Astyanax lacustris, Cyphocharax modestus, Moenkhausia forestii, Piabina argentea, Psellogrammus kennedyi, and Hypostomus ancistroides. Four types of nuclear and one cytoplasmic alteration were observed, with nuclear invagination being the most frequent. Animal bioassays showed five types of nuclear and one cytoplasmic alteration. In the plant bioassay, a reduction in germination and cell division was observed, indicating the cytotoxic and genotoxic effects of the water for Allium cepa cells. Thus, genotoxic alterations in fish and plant bioassays may reflect the different types of land use and cover around streams and the conversion of forest fragments into agricultural areas, mainly due to the expansion of sugarcane crops. The evaluation of the toxicogenetic status of the three streams is essential to emphasize the need to create projects to recover the native vegetation cover, which would improve the quality of the habitat and ensure the permanence of native species.

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“…Moreover, intensive agriculture and cattle farming around the basins, represented by extensive crops and pastures, have promoted the reduction of riparian forests, leaving the margins of aquatic environments unprotected (Viana et al, 2020). The resultant landscape comprises erosion and silted areas and degradation of the riparian forests, a natural physical barrier for contaminant waste, has caused the flow of contaminants into nearby water bodies (Dos Santos et al, 2020;Riveros et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have demonstrated metal concentrations, particularly Iron (Fe), in the rivers of the Ivinhema River sub-basin exceeding the threshold defined by the National Legislation Conama 357 of 2005 (Souza, 2007;Kottwitz, 2012;Gonçalves, 2013;Dourado et al, 2017;Maceda et al, 2015;Da Rocha et al, 2018;Dalla Costa and Roche, 2020;Dos Santos et al, 2020;Viana et al, 2020). Metal enrichment in aquatic environments, even those considered essential for the maintenance of life, such as Fe, can cause toxicity, representing environmental risks to local biodiversity and compromising human health through the consumption of contaminated water and fish (Sang et al, 2019;Kortei et al, 2020;Yu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

High iron content in river waters: environmental risks for aquatic biota and human health

Viana¹,

Crispim²,

Spósito³

et al. 2021

Rev. ambiente água

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This study assessed the concentrations of metals in the Dourados and Brilhante Rivers, investigated the influence of landscape features surrounding these rivers on water quality, and evaluated the risks associated with metal contamination for aquatic biota and human health. Sampling was conducted at eighteen sites distributed along the rivers in June 2016. The concentrations of metals (Cu, Zn, Mn, Fe, Cr, Al and Co) in the water were analyzed by inductively coupled plasma optical emission spectroscopy. All the samples possessed Fe concentrations above the threshold value for aquatic biota (0.3 mg L-1). Moreover, land use and land cover assessment of the study area revealed extensive agriculture activity, particularly in areas surrounding the Dourados River headwaters. Fe bioavailability for both rivers indicated risks for aquatic biota and human health. Overall, the elevated Fe content in these rivers was attributed to anthropogenic activity in the vicinity of these water bodies and the soil characteristics of the area. Considering the importance of river basins, it is necessary to implement public policies for their conservation, especially those related to the cultivation of forests of native species and sustainable agricultural practices, in addition to improving the effluent treatment infrastructure, which is essential to minimize the adverse effects of contamination by chemical elements in water bodies. Keywords: aquatic ecosystems, environmental contaminants, forest fragments.

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Evaluation of the water quality in a conservation unit in Central-West Brazil: Metals concentrations and genotoxicity in situ

Cited by 18 publications

References 42 publications

Evaluation of the genotoxicity in fish erythrocytes to diagnose the water quality of two Amazonian estuaries using the micronucleus test and comet assay

Evaluation of the genotoxicity in fish erythrocytes to diagnose the water quality of two Amazonian estuaries using the micronucleus test and comet assay

Environmental diagnosis of water quality in situ and ex situ in streams in Upper Paraná River Basin, Brazil

High iron content in river waters: environmental risks for aquatic biota and human health

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