Protectiveness of Cu water quality criteria against impairment of behavior and chemo/mechanosensory responses: An update

A meta‐analysis was conducted of studies that reported behavior and chemo/mechanosensory responses by fish, amphibians, and aquatic invertebrates in Cu‐containing waters and also reported sufficient water chemistry for calculation of hardness‐based and biotic ligand model (BLM)–based water quality c...

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Bibliographic Details
Published in:Environmental toxicology and chemistry 2018-05, Vol.37 (5), p.1260-1279
Main Authors: Meyer, Joseph S., DeForest, David K.
Format: Article
Language:English
Subjects:
Amphibians
Animals
Aquatic organisms
Behavior, Animal
Biotic ligand model
Carbon - analysis
Copper - toxicity
Fish
Fishes - physiology
Hardness
Impairment
Invertebrates
Invertebrates - drug effects
Invertebrates - physiology
Ligands
Mechanotransduction, Cellular - drug effects
Olfaction
Olfactometry
Toxicity
Toxicity Tests
Water chemistry
Water hardness
Water Pollutants, Chemical - toxicity
Water Quality
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Summary:A meta‐analysis was conducted of studies that reported behavior and chemo/mechanosensory responses by fish, amphibians, and aquatic invertebrates in Cu‐containing waters and also reported sufficient water chemistry for calculation of hardness‐based and biotic ligand model (BLM)–based water quality criteria (WQC) for Cu. The calculated WQC concentrations were then compared with the corresponding 20% impairment concentrations (IC20) of Cu for those behavior and chemo/mechanosensory responses. The hardness‐based acute and chronic WQC for Cu would not have been protective (i.e., the IC20 would have been lower than the WQC) in 33.6 and 26.2%, respectively, of the 107 combined behavior‐ and chemo/mechanosensory‐response cases that also had adequate water chemistry data for BLM‐based WQC calculations (32.7% inconclusive). In comparison, the BLM‐based acute and chronic WQC for Cu would not have been protective in only 10.3 and 4.7%, respectively, of the same 107 cases (29.9% inconclusive). To improve evaluations of regulatory effectiveness, researchers conducting aquatic Cu toxicity tests should measure and report complete BLM‐input water chemistry and bracket the hardness‐based and BLM‐based WQC concentrations for Cu that would be applicable in their exposure waters. This meta‐analysis demonstrates that, overall, the BLM‐based WQC for Cu were considerably more protective than the hardness‐based WQC for Cu against impairment of behavior and chemo/mechanosensory responses. Environ Toxicol Chem 2018;37:1260–1279. © 2018 SETAC
ISSN:0730-7268
1552-8618
DOI:10.1002/etc.4096