Effect of copper and zinc on the growth and emergence of Epeorus latifolium (Ephemeroptera) in an indoor model stream

Hatakeyama, Shigehisa

doi:10.1007/bf00006054

Cited by 35 publications

(23 citation statements)

References 11 publications

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“…For instance, a 28-d exposure of Ephemerella sp. With Zn, the present results with the heptageniid mayfly Epeorus longimanus, with a larval EC50 estimate of 59 mg/L, were less sensitive than the EC50 estimate of 23 mg/L that we calculated from reported Epeorus latifolium larval survival following 35-d exposures in hardness 83 mg/L water [45]. Ephemerella was also the most sensitive taxa to Cd in the present results, with a 32-d EC50 of approximately 0.37 mg/L in water with a hardness of 17 mg/L (Table 1).…”

Section: Experimental Stream Results Relative To Standard Single-speccontrasting

confidence: 85%

Larval aquatic insect responses to cadmium and zinc in experimental streams

Mebane

Schmidt

Balistrieri

2016

Enviro Toxic and Chemistry

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To evaluate the risks of metal mixture effects to natural stream communities under ecologically relevant conditions, the authors conducted 30-d tests with benthic macroinvertebrates exposed to cadmium (Cd) and zinc (Zn) in experimental streams. The simultaneous exposures were with Cd and Zn singly and with Cd+Zn mixtures at environmentally relevant ratios. The tests produced concentration-response patterns that for individual taxa were interpreted in the same manner as classic single-species toxicity tests and for community metrics such as taxa richness and mayfly (Ephemeroptera) abundance were interpreted in the same manner as with stream survey data. Effect concentrations from the experimental stream exposures were usually 2 to 3 orders of magnitude lower than those from classic single-species tests. Relative to a response addition model, which assumes that the joint toxicity of the mixtures can be predicted from the product of their responses to individual toxicants, the Cd+Zn mixtures generally showed slightly less than additive toxicity. The authors applied a modeling approach called Tox to explore the mixture toxicity results and to relate the experimental stream results to field data. The approach predicts the accumulation of toxicants (hydrogen, Cd, and Zn) on organisms using a 2-pK bidentate model that defines interactions between dissolved cations and biological receptors (biotic ligands) and relates that accumulation through a logistic equation to biological response. The Tox modeling was able to predict Cd+Zn mixture responses from the single-metal exposures as well as responses from field data. The similarity of response patterns between the 30-d experimental stream tests and field data supports the environmental relevance of testing aquatic insects in experimental streams. Environ Toxicol Chem 2017;36:749-762. Published 2016 Wiley Periodicals Inc. on behalf of SETAC. This article is a US government work and, as such, is in the public domain in the United States of America.

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Section: Experimental Stream Results Relative To Standard Single-speccontrasting

confidence: 85%

Larval aquatic insect responses to cadmium and zinc in experimental streams

Mebane

Schmidt

Balistrieri

2016

Enviro Toxic and Chemistry

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“…These reports demonstrated that parts of macrobenthos were sensitive to zinc. From the view of aquatic organisms protection, Japanese government set environmental water quality standards for zinc to 0.03 mg/L for public freshwater area and 0.02 mg/L for public sea in 2003, based on no observed effect concentration of a mayfly, Epeorus latifolium (Hatakeyama 1989) and 50% inhibitory concentration (IC 50 ) of multiplication of a diatom, Nitzschia closterium (Stauber and Florence 1990). Furthermore, Japanese effluent regulation for zinc was revised from 5 to 2 mg/L in 2006.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Consideration of Zinc Ion Removal by Zero-Valent Iron

Kishimoto

Iwano

Narazaki

2011

Water Air Soil Pollut

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Mechanism of zinc iron removal by zerovalent iron was discussed through zinc removal responses to several operational conditions of a packed column reactor with zero-valent iron powder. The adsorption isotherm observed implied that a kind of chemisorption was responsible for zinc removal. Zinc removal by zero-valent iron was enhanced by dissolved oxygen and ferric ion addition. However, it was deteriorated under acidic pH. In addition, zinc adsorbed on zero-valent iron was eluted by a reducing agent such as citric acid, whereas the zinc was not eluted by diluted sulfuric acid. Consequently, the zinc removal mechanism by zero-valent iron was inferred to be as follows: Zero-valent iron was firstly corroded and oxidized into ferric ion by dissolved oxygen. The ferric ion was precipitated as iron hydroxide onto the surface of the zero-valent iron powder. Zinc ion was adsorbed on and/or coprecipitated with the iron hydroxide. The iron hydroxide was finally oxidized and transformed into iron oxides.

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“…Because the Japanese Zn standard for freshwater of 30 mg/L was derived from an individual-level laboratory toxicity test (chronic toxicity test with the mayfly Epeorus latifolium [12]), it is uncertain whether the standard is protective, overprotective, or underprotective of populations and communities in natural freshwater environments. Recently, Kamo and Naito [13] focused on the extinction of aquatic populations and estimated, through theoretical population modeling and from the available data from the toxicity tests on various species, that the Zn concentration to achieve 95% species protection was 107 mg/L.…”

Section: Introductionmentioning

confidence: 99%

Effect of zinc on diversity of riverine benthic macroinvertebrates: Estimation of safe concentrations from field data

Iwasaki

Kagaya

Miyamoto

et al. 2011

Enviro Toxic and Chemistry

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We conducted field surveys at 25 sites in three Japanese catchments to provide conservative estimates of the safe concentration of zinc (Zn) for the protection of riverine macroinvertebrate diversity. The relationships between the Zn concentration and six macroinvertebrate metrics for taxon richness were determined by using regression analysis; this included a piecewise regression model, where two lines are joined at an unknown point. For each metric the piecewise regression model with a zero slope below a threshold concentration was selected as the best model to explain the influence of Zn. Under the assumption that macroinvertebrate diversity reductions of <10% are acceptable, the safe concentrations of Zn were estimated to be 84, 115, 84, 80, 85, and 70 µg/L for total taxon richness, Ephemeroptera, Plecoptera, and Trichoptera (EPT) richness, mayfly richness, caddisfly richness, chironomid richness, and estimated total taxon richness at the riffle scale, respectively. These concentrations are more than twice the water quality standard for Zn in Japan (30 µg/L), suggesting that the standard is likely overprotective for macroinvertebrate diversity. Field studies are useful for evaluating the level of protectiveness of safe concentrations (water quality standards) based on individual-level effects from laboratory toxicity tests, and this evaluation process will have a crucial role in implementing more purpose-driven ecological risk managements that aim to protect natural populations and communities.

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Effect of copper and zinc on the growth and emergence of Epeorus latifolium (Ephemeroptera) in an indoor model stream

Cited by 35 publications

References 11 publications

Larval aquatic insect responses to cadmium and zinc in experimental streams

Larval aquatic insect responses to cadmium and zinc in experimental streams

Mechanistic Consideration of Zinc Ion Removal by Zero-Valent Iron

Effect of zinc on diversity of riverine benthic macroinvertebrates: Estimation of safe concentrations from field data

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