Fish toxicity testing with selenomethionine spiked feed – what's the real question being asked?

2014 ◽  
Vol 16 (3) ◽  
pp. 511-517 ◽  
Author(s):  
Mark C. Rigby ◽  
A. Dennis Lemly ◽  
Russ Gerads
Keyword(s):  
Water Quality ◽  
Environmental Protection Agency ◽  
Toxicity Testing ◽  
Quality Criteria ◽  
Toxicity Tests ◽  
Water Quality Criteria ◽  
Protection Agency ◽  
The Us ◽  
Canadian Provinces ◽  
National Water

The US Environmental Protection Agency and several U.S. states and Canadian provinces are currently developing national water quality criteria for selenium that are based in part on toxicity tests performed by feeding freshwater fish a selenomethionine-spiked diet which may lead to a biased assessment of selenium toxicity under field conditions.

Acute Toxicity of Copper, Cadmium, and zinc to Larvae of the Crab Paragrapus quadridentatus (H. Milne Edwards), and Implications for Water Quality Criteria

1978 ◽  
Vol 29 (1) ◽  
pp. 1 ◽  
Author(s):  
M Ahsanullah ◽  
GH Arnott
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Acute Toxicity ◽  
Metal Toxicity ◽  
Quality Criteria ◽  
Toxicity Tests ◽  
Water Quality Criteria ◽  
Minimal Risk ◽  
Larval Stages ◽  
Acute Toxicity Tests

Acute toxicity tests were carried out on the larvae of P. quadridentatus and 96-h LC50 values of 0.17, 0.49, and 1.23 mg/l were determined for copper, cadmium, and zinc respectively. Potency ratios of the three metals were as follows: Cu/Cd 3.1, Cu/Zn 7.2, and Cd/Zn 2.4. Larvae were found to be nine times more sensitive to zinc and at least 29 times more sensitive to cadmium than were adults. The larval 96-h LC50 values multiplied by an application factor of 0.01 (as recommended in Victorian water quality criteria) results in derived 'safe' concentrations, which in the case of copper and zinc are below the stated 'minimal risk concentrations' of 10 and 20 �g/I respectively. In view of the known greater sensitivity of larvae of many taxa to heavy metal toxicity, the validity of using the same application factor for both adult and larval stages is questioned.

Acute toxicity of chromium, mercury, molybdenum and nickel to the amphipod Allorchestes compressa

1982 ◽  
Vol 33 (3) ◽  
pp. 465 ◽  
Author(s):  
M Ahsanullah
Keyword(s):  
Water Quality ◽  
Acute Toxicity ◽  
Toxic Effect ◽  
Quality Criteria ◽  
Toxicity Tests ◽  
Water Quality Criteria ◽  
Acute Toxicity Tests

In acute toxicity tests on A. compressa, the 96-h LC50 values for mercury, chromium, nickel and molybdenum were: respectively, 0.08, 5.56,34.68 and 247.12 mg I-1. The results suggest that mercury has the most toxic effect on A. compressa, followed by chromium, nickel and molybdenum. The applicability of acute toxicity tests in establishing water-quality criteria is discussed.

China Embarking on Development of its Own National Water Quality Criteria System

2010 ◽  
Vol 44 (21) ◽  
pp. 7992-7993 ◽  
Author(s):  
Fengchang Wu ◽  
Wei Meng ◽  
Xiaoli Zhao ◽  
Huixian Li ◽  
Ruiqing Zhang ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
National Water

scholarly journals A sea change ahead for recreational water quality criteria

2008 ◽  
Vol 7 (1) ◽  
pp. 9-20 ◽  
Author(s):  
Alexandria B. Boehm ◽  
Nicholas J. Ashbolt ◽  
John M. Colford ◽  
Lee E. Dunbar ◽  
Lora E. Fleming ◽  
...  
Keyword(s):  
Water Quality ◽  
Environmental Protection Agency ◽  
Quality Criteria ◽  
The United States ◽  
Water Quality Criteria ◽  
Recreational Water ◽  
Research Needs ◽  
Recreational Water Quality ◽  
Epidemiology Studies ◽  
New Criteria

The United States Environmental Protection Agency is committed to developing new recreational water quality criteria for coastal waters by 2012 to provide increased protection to swimmers. We review the uncertainties and shortcomings of the current recreational water quality criteria, describe critical research needs for the development of new criteria, as well as recommend a path forward for new criteria development. We believe that among the most needed research needs are the completion of epidemiology studies in tropical waters and in waters adversely impacted by urban runoff and animal feces, as well as studies aimed to validate the use of models for indicator and pathogen concentration and health risk predictions.

Problems in determining water quality criteria for freshwater fisheries

1972 ◽  
Vol 180 (1061) ◽  
pp. 439-449 ◽  
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Fish Population ◽  
Toxicity Tests ◽  
Published Data ◽  
Water Quality Criteria ◽  
Lethal Level ◽  
Population Information ◽  
Acute Toxicity Tests ◽  
The Common

Accurate water quality criteria are essential if fisheries are to be protected without unnecessary restrictions being imposed on the discharge of industrial and domestic effluents. There is a considerable literature on the effects of pollutants on fish, but even for the common poisons it is difficult to establish more than tentative criteria from the published data. Acute toxicity tests can be used to measure the effect of chemical and physical variables on the toxicity of poisons and on the resistance of fish to them. Results from sublethal tests can give an insight into the mechanism of toxic action and experiments should be designed to show the level of no adverse effect. Field observations can provide valuable information on the levels of pollutants at which fisheries are unaffected and, in some cases, the graded effect of increased pollution on the deterioration of a fish population. Information from all three sources are required for the preparation of water quality criteria, which should not be based on a single concentration, or ratio of a lethal level, but should indicate, where possible, the range of concentration within which fisheries show a progressive deterioration.

China national water quality criteria for the protection of freshwater life: Ammonia

Chemosphere ◽  
2020 ◽  
Vol 251 ◽  
pp. 126379 ◽  
Author(s):  
Zhenguang Yan ◽  
Xin Zheng ◽  
Juntao Fan ◽  
Yizhang Zhang ◽  
Shuping Wang ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
National Water
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