Use of integrated biomarker indexes for assessing the impact of receiving waters on a native neotropical teleost fish

Abstract Data are provided on the release of 5 radionuclides, 17 metals and 7 major ions from a uranium mining operation in northern Saskatchewan. The downstream concentration of these contaminants is documented, and the point of “no discernible impact” is determined. Sediments in a downstream lake are monitored for uranium and molybdenum, and the post-release fate of these metals is discussed.

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Histological, Genotoxic, and Biochemical Effects onCnesterodon decemmaculatus(Jenyns 1842) (Cyprinodontiformes, Poeciliidae): Early Response Bioassays to Assess the Impact of Receiving Waters

Journal of Toxicology ◽

10.1155/2019/4687685 ◽

2019 ◽

Vol 2019 ◽

pp. 1-13 ◽

Cited By ~ 4

Author(s):

Natalia Alejandra Ossana ◽

Federico Gastón Baudou ◽

Patricia Mónica Castañé ◽

Luis Tripoli ◽

Sonia Soloneski ◽

...

Keyword(s):

Water Quality ◽

Comet Assay ◽

River Water ◽

Structural Changes ◽

Target Organ Damage ◽

Test Organism ◽

The Body ◽

Short Term Exposure ◽

Receiving Waters ◽

The Impact

In the present study, the toxicity of receiving waters from a highly polluted urban watercourse, the Reconquista River, Argentina, collected at a dam in the upstream part of the river was evaluated.Cnesterodon decemmaculatus,a widely distributed fish species in Pampasic rivers proposed for use in ecotoxicological evaluations, was used as a test organism. A 96-h acute toxicity bioassay with river water quality which has been characterized as moderately contaminated was performed. The treatment groups were (1) whole surface river water; (2) whole surface river water with 2 mg Cd/L added as a simulated metal contaminant pulse; (3) a negative control using reconstituted moderately hard water (MHW); (4) a metal positive control, MHW + 2 mg Cd/L; and (5) a positive genotoxicity control, MHW + 5 mg Cyclophosphamide/L (CP). The condition factor rate, micronuclei frequency, and comet assay from peripherical blood, structural changes of the gill arrangement by scanning electron microscope (SEM) analysis, histopathological changes in the liver and the glutathione-S-transferase, catalase, superoxide dismutase, glutathione, and protein content from the body midsection (viscera) were evaluated. According to our results, for short term exposure, SEM analyses of gills and liver histopathological analyses could be useful tools for the evaluation of target organ damage as well as comet assays for DNA damage. We propose that the 96-h laboratory bioassay protocol described is useful for monitoring the deterioration of water quality employing the teleostC. decemmaculatusand that the microscope analysis of gills and liver as well as the comet assay methodology could be sensitive endpoint indicators.

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Research progress on gut health of farmers teleost fish: a viewpoint concerning the intestinal mucosal barrier and the impact of its damage

Reviews in Fish Biology and Fisheries ◽

10.1007/s11160-020-09614-y ◽

2020 ◽

Vol 30 (4) ◽

pp. 569-586

Author(s):

Hongling Zhang ◽

Chao Ran ◽

Tsegay Teame ◽

Qianwen Ding ◽

Seyed Hossein Hoseinifar ◽

...

Keyword(s):

Teleost Fish ◽

Research Progress ◽

Mucosal Barrier ◽

Gut Health ◽

Intestinal Mucosal Barrier ◽

The Impact

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Open water metabolism and dissolved organic carbon in response to environmental watering in a lowland river–floodplain complex

Marine and Freshwater Research ◽

10.1071/mf15318 ◽

2016 ◽

Vol 67 (9) ◽

pp. 1346 ◽

Cited By ~ 1

Author(s):

Todd A. Wallace ◽

Deborah Furst

Keyword(s):

Organic Carbon ◽

Dissolved Organic Carbon ◽

Food Webs ◽

Ecosystem Respiration ◽

Open Water ◽

Relative Role ◽

Eastern Australia ◽

Return Flows ◽

Receiving Waters ◽

The Impact

The relative importance of autochthonous and allochthonous organic material in fuelling ecosystem metabolism is increasingly understood for some river systems. However, in south-eastern Australia, the majority of studies have been conducted during low flows when the supply of allochthonous carbon was limited. Consequently, the importance of episodic inputs of terrestrially derived material in supporting these food webs remains poorly understood. We assessed the influence of return flows from two different scales of environmental watering actions on dissolved organic carbon and open-water productivity in receiving waters adjacent to the watered area. For the wetland-scale event, gross primary productivity and ecosystem respiration increased in the receiving waters during the period of return flows. During the floodplain-scale watering, differences were observed among sites. Within the managed inundation zone, values for net ecosystem productivity switched from near zero during the baseline to strongly negative during the impact period, whereas values at the river sites were either near zero or positive. The results contribute to our understanding of the relative role of allochthonous material in supporting aquatic food webs in lowland rivers, and demonstrate potential for watering actions to have a positive influence on riverine productivity during periods of low water availability.

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OHNOLOGS v2: a comprehensive resource for the genes retained from whole genome duplication in vertebrates

Nucleic Acids Research ◽

10.1093/nar/gkz909 ◽

2019 ◽

Cited By ~ 6

Author(s):

Param Priya Singh ◽

Hervé Isambert

Keyword(s):

Teleost Fish ◽

Whole Genome Duplication ◽

Genome Duplication ◽

Genetic Diseases ◽

Genomic Analysis ◽

Biased Sampling ◽

Whole Genome ◽

Genome Duplications ◽

Evolutionary Genomic ◽

The Impact

Abstract All vertebrates including human have evolved from an ancestor that underwent two rounds of whole genome duplication (2R-WGD). In addition, teleost fish underwent an additional third round of genome duplication (3R-WGD). The genes retained from these genome duplications, so-called ohnologs, have been instrumental in the evolution of vertebrate complexity, development and susceptibility to genetic diseases. However, the identification of vertebrate ohnologs has been challenging, due to lineage specific genome rearrangements since 2R- and 3R-WGD. We previously identified vertebrate ohnologs using a novel synteny comparison across multiple genomes. Here, we refine and apply this approach on 27 vertebrate genomes to identify ohnologs from both 2R- and 3R-WGD, while taking into account the phylogenetically biased sampling of available species. We assemble vertebrate ohnolog pairs and families in an expanded OHNOLOGS v2 database. We find that teleost fish have retained more 2R-WGD ohnologs than mammals and sauropsids, and that these 2R-ohnologs have retained significantly more ohnologs from the subsequent 3R-WGD than genes without 2R-ohnologs. Interestingly, species with fewer extant genes, such as sauropsids, have retained similar or higher proportions of ohnologs. OHNOLOGS v2 should allow deeper evolutionary genomic analysis of the impact of WGD on vertebrates and can be freely accessed at http://ohnologs.curie.fr.

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Are we about to upgrade wastewater treatment for removing organic micropollutants?

Water Science & Technology ◽

10.2166/wst.2008.825 ◽

2008 ◽

Vol 57 (2) ◽

pp. 251-255 ◽

Cited By ~ 155

Author(s):

A. Joss ◽

H. Siegrist ◽

T. A. Ternes

Keyword(s):

Cost Estimation ◽

Plant Size ◽

Point Sources ◽

Wastewater Management ◽

Biological Degradation ◽

Environmental Friendliness ◽

Additional Advantage ◽

Receiving Waters ◽

The Impact ◽

Carbon Filtration

Activated sludge treatment allows only for a partial removal of micropollutants, mainly via sorption and biological degradation. Ozonation and activated carbon filtration are processes bearing the potential to drastically reduce the micropollutant load discharged to the environment after (centralized) biological treatment. The estimated total costs between 0.05 and 0.20€ per m3 treated water (depending on plant size and effluent DOC content) represent only a small fraction of the total costs for urban wastewater management and are therefore considered feasible. Full scale testing is currently planned or under way with the aim to a) confirm this cost estimation and b) to demonstrate the benefit by quantification of the effect of removal and by documenting the impact on the ecology of receiving waters. Ozonation would have the additional advantage of achieving partial disinfection. Another issue currently being intensively studied is the byproducts formed during ozonation and their toxicity. Evidence is needed that the formed ozonation byproducts are either harmless or easily degradable. Since a 5% to 20% loss of sewage is occurring due to sewer leakage and combined sewer overflow an improved reduction of micropollutant input to the aquatic environment requires that advanced centralized treatment is complemented with measures taken before discharge into the sewer. Options hereto may be waste design, labeling of compounds according to environmental friendliness or separate treatment of quantitatively significant point sources (e.g. hospital wastewater, nursery homes, industrial wastewater).

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Studies on the impact of heavy metal cadmium on certain enzymes in a freshwater teleost fish, Cyprinus carpio

Toxicology Letters ◽

10.1016/j.toxlet.2006.06.327 ◽

2006 ◽

Vol 164 ◽

pp. S157 ◽

Cited By ~ 2

Author(s):

Mathan Ramesh

Keyword(s):

Heavy Metal ◽

Cyprinus Carpio ◽

Teleost Fish ◽

Freshwater Teleost ◽

The Impact

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Detergent Phosphorus Legislation: A Technical Appraisal of its Effectiveness

Water Quality Research Journal ◽

10.2166/wqrj.1978.002 ◽

1978 ◽

Vol 13 (1) ◽

pp. 1-20

Author(s):

R.A. Budd ◽

P.H. Jones

Keyword(s):

Cost Effective ◽

Phosphorus Loading ◽

Phosphorus Concentration ◽

Established Fact ◽

Receiving Waters ◽

Technological Evaluation ◽

The Many ◽

Interim Measure ◽

Government Legislation ◽

The Impact

Abstract This literature review provides a technological evaluation of government legislation on phosphate contents in commercially available detergents to decrease P inputs and thereby reduce the rate of eutrophi-cation to receiving waters. The predicted 50-60% reductions of phosphorus in raw sewage were achieved in the cases studied. This was attributable to regulation of detergent phosphorus. This study reports six years after such legislation was enacted in Canada, a statistical analysis of historical data on plants operated by the Ontario Ministry of the Environment. It illustrated that with 95% confidence the 1976 influent phosphorus concentration has decreased from 33 to 55% of the 1970 influent values. Decreases in energy consumed and sludge volume indicated that detergent reformulation legislation is not only a very effective interim measure for reducing phosphorus loadings (results being realized immediately) , but provides a cost-effective complementary system to existing phosphorus removal programmes. The reduction in phosphorus loading to receiving waters is an established fact. However, the impact of decreased P loadings, whether through legal measures or chemical removal, is difficult to quantify because of the many complex variables affecting water quality and algal biomass in aquatic ecosystems.

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Aerobic microbial transformations of pipe and silt trap sediments from combined sewers

Water Science & Technology ◽

10.2166/wst.1999.0123 ◽

1999 ◽

Vol 39 (2) ◽

pp. 233-249 ◽

Cited By ~ 2

Author(s):

Jes Vollertsen ◽

Thorkild Hvitved-Jacobsen ◽

Iain McGregor ◽

Richard Ashley

Keyword(s):

Organic Matter ◽

Dissolved Oxygen ◽

Conceptual Model ◽

Combined Sewer Overflow ◽

Organic Fraction ◽

Combined Sewer ◽

Receiving Waters ◽

Oxygen Utilisation ◽

Fast Settling ◽

The Impact

Organic matter in sediments from pipes and silt traps in combined sewers was divided into fractions with different settling velocities. Biodegradability of organic matter for these fractions was characterised based on results from a conceptual model of aerobic transformations of resuspended sediments calibrated on oxygen utilisation rates. Pipe sediments as well as silt trap sediments were investigated and no differences between these deposits were detected. It was found that the largest fraction of organic matter is associated with material which settles relatively fast and only a small part is associated with relatively slow settling material. However, the fast settling organic matter was found to be rather slowly biodegradable compared to the slow settling organic fraction. Because the biodegradability of the organic matter discharged during combined sewer overflow (CSO) events is of significant importance to the impact on the dissolved oxygen concentrations in receiving waters, the biodegradability of sewer sediments is argued to be taken into account for detailed characterisation when dealing with CSO impacts.

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The fate of infiltrated stormwater from infiltration basins to the stream: quantifying the impact of the urban karst

10.5194/egusphere-egu2020-1928 ◽

2020 ◽

Author(s):

Abolfazl Poozan ◽

ََAndrew Western ◽

Meenakshi Arora ◽

Matthew Burns ◽

Tim Fletcher

Keyword(s):

Short Circuit ◽

Control Measures ◽

Sewer Pipes ◽

Groundwater Levels ◽

Novel Approach ◽

Wide Range ◽

Underground Infrastructure ◽

Receiving Waters ◽

Stormwater Control Measures ◽

The Impact

Urbanization leads to severe alterations to the flow regime of receiving waters, including increased frequency and magnitude of storm flows as well as reduced baseflows. Infiltration basins are among the most widely applied stormwater control measures worldwide, in part for their ability to intercept stormwater runoff and allow it to infiltrate into the ground, with the assumption that this will recharge groundwater and thus help in restoring clean, filtered baseflows to receiving waters. Recent research has highlighted that in fact, the fate of infiltrated stormwater is highly uncertain, particularly because of likely interactions with underground infrastructure&#8212;e.g. sewer pipes, telecommunication cables, etc. These infrastructures are typically surrounded by highly permeable material which has the potential to substantially alter the way infiltrated stormwater moves through the subsurface (a phenomenon known as the urban karst).This study aimed to predict and generalize the impact of the urban karst on infiltrated stormwater as it can provide a preferential flowpath and thus may prevent infiltrated stormwater from reaching receiving waters or may short circuit subsurface storages that can increase routing time delays and thus baseflow. In doing so, a modelling study using HYDRUS-3D was undertaken. In addition, a novel approach to generalize the results was proposed based on groundwater level and the hydraulic conductivities of soil and gravel/sand. We predicted that the impact of the urban karst on infiltrated stormwater increases whit higher groundwater levels, and greater contrasts between the hydraulic conductivity of regional soil and gravel. The HYDRUS results for a wide range of scenarios are compared with the generalization, which captures the impact of Urban Karst well.It is important to consider the impact of the urban karst where one of the goals of building infiltration basins is to recharge the baseflow of the stream downslope. This suggests that decision on basin location is important where urban infrastructure is located between potential infiltration basin sites and downslope stream. The impact of the urban karst should be investigated at each specific site before implementing infiltration systems and this study works towards simplified representations of impact for design.

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