Using Single-Species Toxicity Tests, Community-Level Responses, and Toxicity Identification Evaluations to Investigate Effluent Impacts

Maltby, Lorraine; Clayton, Sophie; Huang, Yu; McLoughlin, Nathan; Wood, Robert M.; Yin, Daqiang

doi:10.1897/1551-5028(2000)019<0151:ussttc>2.3.co;2

Cited by 25 publications

(31 citation statements)

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“…In situ bioassays previously have been deployed that use cladocerans as test organisms and have successfully detected toxic impacts in rivers [15–19]. Cladocerans adapt well to deployment in the field and are suitable as test organisms because survival rates in uncontaminated conditions are frequently greater than 85% for C. dubia [15] and greater than 90% for D. magna [16]. However, most in situ bioassays that use cladocerans have used lethality as an endpoint [15,16,18], which may not be the most sensitive endpoint to use.…”

Section: Introductionmentioning

confidence: 99%

“…Cladocerans adapt well to deployment in the field and are suitable as test organisms because survival rates in uncontaminated conditions are frequently greater than 85% for C. dubia [15] and greater than 90% for D. magna [16]. However, most in situ bioassays that use cladocerans have used lethality as an endpoint [15,16,18], which may not be the most sensitive endpoint to use. Sublethal, physiological endpoints generally are recognized to be more sensitive than lethal endpoints because physiological endpoints are often the initial reaction of organisms to stress and can be detected before mortality occurs [19].…”

Section: Introductionmentioning

confidence: 99%

“…Sublethal, physiological endpoints generally are recognized to be more sensitive than lethal endpoints because physiological endpoints are often the initial reaction of organisms to stress and can be detected before mortality occurs [19]. Therefore, feeding depression could be a useful sublethal endpoint to measure in in situ bioassays with D. magna and already has been successfully employed as an in situ endpoint with Gammarus pulex [16]. To gain an accurate measure of the toxicity of a water body by a D. magna in situ bioassay, animals must be continually exposed, in cages, to the surrounding environment.…”

Section: Introductionmentioning

confidence: 99%

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Postexposure feeding depression: A new toxicity endpoint for use in laboratory studies with Daphnia magna

McWilliam

Baird

2002

Enviro Toxic and Chemistry

131

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In situ bioassays with daphnids currently employ lethality as an endpoint, and although sublethal responses (reproduction and feeding rate) can be measured in the field, such endpoints pose major practical challenges. Previous studies have indicated that Daphnia magna exposed to toxic substances can exhibit delayed recovery in feeding behavior (postexposure feeding depression). This simple, robust response has the potential to be an ecologically relevant and potentially diagnostic endpoint. This study developed and tested the use of postexposure feeding depression as a toxicity endpoint in the laboratory environment. First, replicate numbers were manipulated to produce statistically reliable results. Second, postexposure feeding depression in D. magna was studied under laboratory conditions, by employing toxic substances with differing modes of action. Although most substances caused feeding inhibition during direct exposure, not all substances produced postexposure feeding depression. However, the use of lethality as a supplementary endpoint provided an alternative measure when no feeding depression was apparent after exposure. In combination, these endpoints offer a potentially more sensitive, ecologically relevant alternative to the use of lethality alone for in situ bioassay studies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Postexposure feeding depression: A new toxicity endpoint for use in laboratory studies with Daphnia magna

McWilliam

Baird

2002

Enviro Toxic and Chemistry

131

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“…Whole effluent toxicity tests are increasingly used to monitor compliance of permitted discharges. By using an in situ bioassessment approach, Maltby et al (2000) demonstrated receiving water toxicity and ecological degradation that were consistent with the results of WET tests performed on the point source discharge and concluded that systematic approach provides a comprehensive and ecologically relevant database for assessing the ecological risk posed by point source discharges, so that by applying a set of complementary diagnostic tools, resource managers and dischargers would gain greater confidence in the permit limits set for effluents and the methods used to monitor compliance. Quite a large number of specific research studies of ecotoxicity of industrial effluents using conventional toxicity tests combined with chemical quality assessment, were conducted world-wide, such as, for instance, in Portugal (Mendonca et al 2007), Spain (Rodriguez et al 2006), UK (Tinsley et al 2004), Italy (Guerra 2001), Netherlands (Tonkes et al 1999), Turkey (Sponza 2002), Lithuania and Estonia (Manusadzianas et al 2003), Argentina (Gomez et al 2001;Di Marzio et al 2005), Brasil (Araujo et al 2005) and South Korea (Ra et al 2006a).…”

Section: Resultsmentioning

confidence: 60%

The relationship between whole effluent toxicity (WET) and chemical-based effluent quality assessment in Vojvodina (Serbia)

Teodorović

Bečelić

Planojević

et al. 2008

Environ Monit Assess

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The relationship between whole effluent toxicity (WET) and chemical-based effluent quality assessment across a range of effluent types was examined for the first time in Serbia. WET was determined by Daphnia magna acute tests, while chemical-based toxicity was taken as theoretical for concentrations of priority chemicals and effluent quality assessment based on the valid Serbian regulations. A poor correlation was found between WET and chemical-based effluent quality assessment: positive toxicity tests were found, in general, in cases where samples satisfied the requirements of mandatory effluent monitoring. Statistically insignificant correlation between the predicted and observed toxicity indicated that the presence of priority substances accounted to the overall toxicity only to a certain degree, most probably due to a rather short list of priority pollutants regularly analysed in effluents. Current monitoring requirements neglect hazards that derive from potentially present toxicants and unpredictable toxicity of complex mixtures, which led to poor correlation between the WET and chemical-based results in this study.

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“…The feeding rate on leaf discs was expressed in consumed leaf mass (C) and calculated as follows (Maltby et al 2000):…”

Section: Calculations and Statisticsmentioning

confidence: 99%

Infochemicals Influence Neonicotinoid Toxicity—Impact in Leaf Consumption, Growth, and Predation of the Amphipod Gammarus fossarum

Bundschuh

Zubrod

Klöttschen

et al. 2020

Enviro Toxic and Chemistry

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Infochemicals act as inter‐ or intraspecific messengers. The literature suggests complex interactions between infochemicals (mainly predator cues) and chemical (e.g., pesticide) effects, with their direction and magnitude depending on the cue origin, pesticide identity, and test species. With the present study we assessed the impact of alarm cues alone and in combination with the neonicotinoid insecticide thiacloprid on leaf consumption, predation on Baetis nymphs, and dry weight of the amphipod Gammarus fossarum. Alarm cues (ground gammarids) and thiacloprid alone decreased gammarid leaf consumption with increasing intensities. At a defined alarm cue intensity, which alone did not cause a significant reduction in gammarid feeding, thiacloprid‐induced feeding effects were additive. During an experiment targeting gammarid predation on Baetis nymphs (120 h), thiacloprid and alarm cues alone did increase and reduce predation significantly, respectively. Moreover, alarm cues led to a lower final gammarid dry weight. However, alarm cues did not affect response variables during a second predation experiment performed at a higher thiacloprid concentration (2 vs 0.75 µg/L). This discrepancy in alarm cue effects highlights either a varying susceptibility of the test species to these cues among experiments or that cue quality is fluctuating. Thus, the present study highlights a considerable variability in the individual and interactive effects of infochemicals and chemical stressors on aquatic biota, an insight relevant in the assessment of multiple stressors. Environ Toxicol Chem 2020;39:1755–1764. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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Using Single-Species Toxicity Tests, Community-Level Responses, and Toxicity Identification Evaluations to Investigate Effluent Impacts

Cited by 25 publications

References 0 publications

Postexposure feeding depression: A new toxicity endpoint for use in laboratory studies with Daphnia magna

Postexposure feeding depression: A new toxicity endpoint for use in laboratory studies with Daphnia magna

The relationship between whole effluent toxicity (WET) and chemical-based effluent quality assessment in Vojvodina (Serbia)

Infochemicals Influence Neonicotinoid Toxicity—Impact in Leaf Consumption, Growth, and Predation of the Amphipod Gammarus fossarum

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