Growth and Survival of Developing Steelhead Trout (Salmo gairdneri) Continuously or Intermittently Exposed to Copper

1984 ◽  
Vol 41 (3) ◽  
pp. 433-438 ◽  
Author(s):  
W. K. Seim ◽  
L. R. Curtis ◽  
S. W. Glenn ◽  
G. A. Chapman
Keyword(s):  
Water Quality ◽  
Natural Waters ◽  
Quality Criteria ◽  
Salmo Gairdneri ◽  
Water Quality Criteria ◽  
Steelhead Trout ◽  
Growth And Survival ◽  
Exposed Fish ◽  
Intermittent Exposure ◽  
Better Than

Steelhead trout (Salmo gairdneri) were continuously or intermittently exposed to copper over a 78-d period from 6 d postfertilization through 5 wk postswimup. Copper was introduced into the intermittent exposure chambers for 4.5 h each day. Continuously exposed fish survived and grew better than intermittently exposed fish at the same daily mean copper concentrations. Intermittently exposed fish accumulated significantly more copper than those continuously exposed at the same daily mean concentrations. Results demonstrated that data derived from continuous laboratory exposures should not be directly converted to water quality criteria where toxicant concentrations in natural waters are temporally variable.

scholarly journals Study of Water Quality Indicators of Mountain Rivers Used as Source of Drinking Water Supply of the Targu-Jiu Municipality

2020 ◽  
Vol 71 (1) ◽  
pp. 384-389
Author(s):  
Delia Nica-Badea ◽  
Simona Brandibur
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Natural Waters ◽  
Ecological Status ◽  
Quality Criteria ◽  
Quality Standards ◽  
Biological Indicators ◽  
Mountainous Area ◽  
Water Quality Criteria ◽  
National Quality

Water quality criteria are all physicochemical and biological indicators that characterize a body of water. The current study aims at investigating the quality of two natural waters in the Gorj County sub-mountainous area (�u�i�a, Vaidei and Runc, capture Runc) used as drinking water sources of Targu-Jiu. Sampling and determinations use spectrophotometric, gravimetric, volumetric or electrometric techniques in accordance with standard methods (SR ISO and / or SR EN) for a series of physicochemical indicators analyzed between January - December 2017: thermal and acidification, oxygen regime, nutrients, salinity, relevant pollutants. Experimental values, annual averages related to the quality standards for potable water, ecological status and classification of water bodies, place the water of the two rivers in the drinking water category A1 and the first class of ecological quality. The Water Quality Index (WQI) for 9 selected parameters highlighted a sensitively close overall level of the water of the two rivers Susita (88) and Runc (85.2), the good quality category (7o-9o), reported to national quality standards for surface water which can be used for delivery as drinking water.The study of indicators of the two rivers in relation to national rules aligned with the European water requirements and research shows a high qualitative status corresponding to community uses.

Biochemical effects of long-term exposure to cadmium and copper on rainbow trout (Salmo gairdneri): Validation of water quality criteria

1984 ◽  
Vol 8 (2) ◽  
pp. 106-117 ◽  
Author(s):  
A. Arillo ◽  
D. Calamari ◽  
C. Margiocco ◽  
F. Melodia ◽  
P. Mensi
Keyword(s):  
Water Quality ◽  
Rainbow Trout ◽  
Quality Criteria ◽  
Salmo Gairdneri ◽  
Water Quality Criteria ◽  
Biochemical Effects

Volume Analysis for Attainability of Water Quality Criteria for Three Loading Constituents

2004 ◽  
Author(s):  
Ping Wang ◽  
Lewis Linker ◽  
James Collier ◽  
Gary Shenk ◽  
Robert Koroncai ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Volume Analysis

Cyanide Formation and Fate in Complex Effluents and its Relation to Water Quality Criteria

2015 ◽  
Vol 2 (0) ◽  
pp. 9781780404073-9781780404073
Author(s):  
M. Kavanaugh
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria

Developing Ambient Water Quality Criteria for Mercury: A Probabilistic Site-Specific Approach

2015 ◽  
Vol 2 (0) ◽  
pp. 9781780404028-9781780404028
Author(s):  
D. R. J. Moore ◽  
A. Pawlisz ◽  
R. Scott Teed
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Ambient Water ◽  
Site Specific ◽  
Specific Approach

scholarly journals Geochemical and biological controls on the ecological relevance of total, dissolved, and colloidal forms of trace elements in large boreal rivers: review and case studies

2020 ◽  
Vol 28 (2) ◽  
pp. 138-163
Author(s):  
C.W. Cuss ◽  
C.N. Glover ◽  
M.B. Javed ◽  
A. Nagel ◽  
W. Shotyk
Keyword(s):  
Water Quality ◽  
Trace Elements ◽  
Case Studies ◽  
Quality Criteria ◽  
Water Levels ◽  
Water Quality Criteria ◽  
Aquatic Life ◽  
Athabasca River ◽  
Biological Variables ◽  
Boreal Rivers

The concentrations of trace elements (TEs) in large boreal rivers can fluctuate markedly due to changing water levels and flow rates associated with spring melt and variable contributions from tributaries and groundwaters, themselves having different compositions. These fluctuating and frequently high concentrations create regulatory challenges for protecting aquatic life. For example, water quality criteria do not account for changes in flow regimes that can result in TE levels that may exceed regulatory limits, and neither do they account for the markedly different lability and bioaccessibility of suspended solids. This review addresses the geochemical and biological processes that govern the lability and bioaccessibility of TEs in boreal rivers, with an emphasis on the challenges posed by the colloidal behaviour of many TEs, and their relationship to the dissolved fraction (i.e., <0.45 μm in size). After reviewing the processes and dynamics that give rise to the forms and behaviour of TEs in large boreal rivers, their relevance for aquatic organisms and the associated relationships between size and lability and bioaccessibility are discussed. The importance of biological variables and different forms of TEs for limiting lability and bioaccessibility are also addressed. Two case studies emphasize seasonal fluctuations and accompanying changes in the distribution of TE amongst different size fractions and associated colloidal species in large boreal rivers: the Northern Dvina and one of its tributaries, the Pinega River, both in Russia, and the Athabasca River in Alberta, Canada. Water quality in the Athabasca River is briefly discussed with respect to Canadian guidelines.

Ecological and health risk assessments and water quality criteria of heavy metals in the Haihe River

2021 ◽  
pp. 117971
Author(s):  
Liang Cui ◽  
Xiaonan Wang ◽  
Ji Li ◽  
Xiangyun Gao ◽  
Jiawen Zhang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Health Risk ◽  
Quality Criteria ◽  
Risk Assessments ◽  
Water Quality Criteria ◽  
Haihe River ◽  
Health Risk Assessments

Toxicity of ammonia, cadmium, and nitrobenzene to four local fishes in the Liao River, China and the derivation of site-specific water quality criteria

2018 ◽  
Vol 147 ◽  
pp. 656-663 ◽  
Author(s):  
Zhihong Liu ◽  
Xiaojun Li ◽  
Peidong Tai ◽  
Lizong Sun ◽  
Honghong Yuan ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Site Specific

scholarly journals Comparative Growth Performance of Oreochromis Hybrids and Selectively-Bred Strain (F8) in Malawi

2016 ◽  
Vol 5 (4) ◽  
pp. 13 ◽  
Author(s):  
Daud Kassam ◽  
Marcus Sangazi
Keyword(s):  
Water Quality ◽  
Growth Performance ◽  
Crude Protein ◽  
Experimental Period ◽  
Quality Parameters ◽  
Conversion Ratio ◽  
Food Conversion ◽  
Growth And Survival ◽  
Maize Bran ◽  
Better Than

<p>Most fish farmers in Malawi culture unimproved fish strains whose growth is slow and mature while still small. Four strains of <em>Oreochromis</em>, namely; selectively-bred/improved <em>O. shiranus</em> (F<sub>8</sub>), two reciprocal F<sub>1</sub> <em>Oreochromis</em> hybrids, and <em>O. karongae</em> as a control (mean weight 2.5 ± 0.7 g) were stocked at a density of 5fish/m<sup>2 </sup>in 9m<sup>2 </sup>hapas replicated three times, and cultured for 90 days at Bunda Fish Farm. Fish were fed twice a day with feed formulated using maize bran and soybean containing 30% crude protein throughout the experimental period. The final mean weights were significantly different (p&lt;0.05) across the treatments whereby; hybrid <em>O. shiranus</em> (male) X <em>O. karongae</em> (female) was 12.09g, hybrid <em>O. shiranus</em> (female) X <em>O. karongae</em> (male) was 9.72g, improved <em>O. shiranus</em> (F<sub>8</sub>) registered 9.23g, and <em>O. karongae</em> was the least with 9.00g. Apparent food conversion ratio was also statistically different (p&lt;0.05) across the treatments whereby; <em>O. karongae</em> was 3.63, hybrid <em>O. shiranus</em> (female) X <em>O. karongae</em> (male) was 3.25, improved <em>O. shiranus</em> (F<sub>8</sub>) was 3.16 and hybrid <em>O. shiranus</em> (male) X <em>O. karongae</em> (female) was lowest with 2.26. There were no significant differences on the water quality parameters across the treatments throughout the experimental period and were within the required ranges for growth and survival of tilapias fish species. The results suggest that <em>Oreochromis</em> hybrids may be suitable candidates for aquaculture in terms of production as they performed better than the improved <em>O. shiranus</em> and the control <em>O. karongae</em>.</p>

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