Sublethal Copper Effects on Bluegill, Lepomis macrochirus, Foraging Behavior

1989 ◽  
Vol 46 (11) ◽  
pp. 1977-1985 ◽  
Author(s):  
Mark B. Sandheinrich ◽  
Gary J. Atchison
Keyword(s):  
Foraging Behavior ◽  
Environmental Protection Agency ◽  
Lepomis Macrochirus ◽  
Daphnia Pulex ◽  
Quality Criteria ◽  
Handling Time ◽  
Water Quality Criteria ◽  
Reaction Distance ◽  
In The Wild ◽  
Copper Effects

The effects of four copper concentrations (5 [control], 31, 180, 1710 μg L−1) on bluegill (Lepomis macrochirus) foraging behavior were examined with two separate experiments; one experiment assessing copper effects on the reaction distance of bluegill to two sizes of untreated zooplankton and one assessing copper effects on the functional response of bluegill to untreated (five tests) and treated (five tests) invertebrate prey. Prey used in these experiments were: Daphnia pulex, D. magna (Cladocera), Hyalella azteca (Amphipoda), and two sizes of Enallagma sp. (Zygoptera). Copper had no effect on the reaction distance of fish to zooplankton. There was a significant negative dose-response relationship for consumption rates of all untreated prey but not of treated prey groups. Prey handling time for bluegill capturing treated and untreated prey increased significantly with copper concentration and was the most consistently sensitive parameter measured. Capture efficiency by bluegill, although altered by copper for some prey types, was not as consistent a measure of toxicant stress. This study suggests that mechanistic measures are valuable indicators of toxicant effects on fish feeding behavior and that copper concentrations near the U.S. Environmental Protection Agency water quality criteria (18–28 μ L−1) may alter food consumption and reduce growth of fish in the wild.

Effects of cadmium on the foraging behavior and growth of juvenile bluegill, Lepomis macrochirus

1995 ◽  
Vol 52 (8) ◽  
pp. 1630-1638 ◽  
Author(s):  
Miehael D. Bryan ◽  
Gary J. Atchison ◽  
Mark B. Sandheinrich
Keyword(s):  
Foraging Behavior ◽  
Standardized Test ◽  
Prey Capture ◽  
Prey Size ◽  
Cadmium Concentration ◽  
Control Level ◽  
Lepomis Macrochirus ◽  
Aquatic Organisms ◽  
Handling Time ◽  
Behavioral Measure

Standardized test protocols for assessing chemical hazards to aquatic organisms inadequately consider behavioral effects of toxicants; yet, organisms behaving abnormally in the wild have reduced growth, reduced fitness, and high mortality. We determined the chronic effects of cadmium (0, 30, 60, 120, and 240 μg∙L−1) on juvenile bluegill (Lepomis macrochirus) foraging behavior and growth rates in functional response experiments, each using different sized Daphnia as prey. Bluegill consumption rate increased with prey density. Cadmium-exposed fish initially attacked fewer prey per unit of time than unexposed fish, with subsequent recovery to control-level consumption rates determined by cadmium concentration and prey size. The degree of change (over time) in the number of Daphnia attacked per 30 s was the most consistently sensitive behavioral measure of sublethal stress in exposed bluegill; the lowest observed effect concentration (LOEC) was 37.3 μg Cd∙L−1. Effects on prey attack rates (attacks/30 s) were inversely related to prey size; cadmium had the greatest effect on bluegill foraging on the smallest prey. Cadmium had no effect on prey capture efficiency or handling time. Growth in bluegill length and weight was reduced (P ≤ 0.019) by all cadmium concentrations and was a more sensitive end point than were the foraging behaviors.

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.

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.

scholarly journals Comparing impacts of metal contamination on macroinvertebrate and fish assemblages in a northern Japanese river

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e10808
Author(s):  
Hiroki Namba ◽  
Yuichi Iwasaki ◽  
Kentaro Morita ◽  
Tagiru Ogino ◽  
Hiroyuki Mano ◽  
...  
Keyword(s):  
Water Quality ◽  
Environmental Protection Agency ◽  
Metal Contamination ◽  
Fish Assemblages ◽  
Condition Factor ◽  
Quality Criteria ◽  
Ecological Impacts ◽  
Contaminated Sites ◽  
Running Waters ◽  
Water Quality Criteria

Researchers have long assessed the ecological impacts of metals in running waters, but few such studies investigated multiple biological groups. Our goals in this study were to assess the ecological impacts of metal contamination on macroinvertebrates and fishes in a northern Japanese river receiving treated mine discharge and to evaluate whether there was any difference between the metrics based on macroinvertebrates and those based on fishes in assessing these impacts. Macroinvertebrate communities and fish populations were little affected at the downstream contaminated sites where concentrations of Cu, Zn, Pb, and Cd were 0.1–1.5 times higher than water-quality criteria established by the U.S. Environmental Protection Agency. We detected a significant reduction in a few macroinvertebrate metrics such as mayfly abundance and the abundance of heptageniid mayflies at the two most upstream contaminated sites with metal concentrations 0.8–3.7 times higher than the water-quality criteria. There were, however, no remarkable effects on the abundance or condition factor of the four dominant fishes, including masu salmon (Oncorhynchus masou). These results suggest that the richness and abundance of macroinvertebrates are more sensitive to metal contamination than abundance and condition factor of fishes in the studied river. Because the sensitivity to metal contamination can depend on the biological metrics used, and fish-based metrics in this study were limited, it would be valuable to accumulate empirical evidence for ecological indicators sensitive to metal contamination within and among biological groups to help in choosing which groups to survey for general environmental impact assessments in metal-contaminated rivers.

scholarly journals New USEPA water quality criteria by 2012: GOMA concerns and recommendations

2011 ◽  
Vol 9 (4) ◽  
pp. 718-733 ◽  
Author(s):  
Janet Gooch-Moore ◽  
Kelly D. Goodwin ◽  
Carol Dorsey ◽  
R. D. Ellender ◽  
Joanna B. Mott ◽  
...  
Keyword(s):  
Water Quality ◽  
Gulf Of Mexico ◽  
Environmental Protection Agency ◽  
Quality Criteria ◽  
The United States ◽  
Detection Methods ◽  
Source Tracking ◽  
Water Quality Criteria ◽  
Gulf State ◽  
New Criteria

The Gulf of Mexico Alliance (GOMA) was tasked by the five Gulf State Governors to identify major issues affecting the Gulf of Mexico (GoM) and to set priorities for ameliorating these problems. One priority identified by GOMA is the need to improve detection methods for water quality indicators, pathogens and microbial source tracking. The United States Environmental Protection Agency (USEPA) is tasked with revising water quality criteria by 2012; however, the locations traditionally studied by the USEPA are not representative of the GoM and this has raised concern about whether or not the new criteria will be appropriate. This paper outlines a number of concerns, including deadlines associated with the USEPA Consent Decree, which may prevent inclusion of research needed to produce a well-developed set of methods and criteria appropriate for all regulated waters. GOMA makes several recommendations including ensuring that criteria formulation use data that include GoM-specific conditions (e.g. lower bather density, nonpoint sources), that rapid-testing methods be feasible and adequately controlled, and that USEPA maintains investments in water quality research once the new criteria are promulgated in order to assure that outstanding scientific questions are addressed and that scientifically defensible criteria are achieved for the GoM and other regulated waterbodies.

scholarly journals Coastline Levels of Dissolved Heavy Metals in the Estuarine Water–System of Vigo

2021 ◽  
Vol 18 (4) ◽  
pp. 2136
Author(s):  
Benita Pérez-Cid ◽  
Elena Falqué ◽  
Jesus Simal-Gandara
Keyword(s):  
Heavy Metals ◽  
Environmental Protection Agency ◽  
Water System ◽  
Quality Criteria ◽  
The United States ◽  
Limited Attention ◽  
Water Quality Criteria ◽  
Metals And Metalloids ◽  
Maritime Traffic ◽  
Chemical Distribution

Limited attention has been directed toward the effects of maritime traffic on heavy metals and metalloids in seawater. Water samples were collected from the estuary of Vigo Ría in the summer of 2018. The chemical distribution of ten dissolved trace metals and metalloids (Cr, Mn, Fe, Cu, Zn, As, Se, Cd, Hg, and Pb) in water was determined from north to south (where the biggest city in the region is) and from east to west (where the maritime traffic is higher). Metal concentration in waters showed that most metals were below recommended water quality criteria by the United States Environmental Protection Agency (EPA). One of the samples had a Cu concentration higher at the entrance of the Vigo estuary, where maritime traffic is very important. Cu and Zn concentrations were highly correlated between them, showing a similar pollution origin, probably due to anti-fouling paints. Mn and Fe are elements influenced by river sources.

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

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
Sign in / Sign up

Export Citation Format

Share Document