Acute and Chronic Toxicity of Nickel and Zinc to a Laboratory Cultured Mayfly (Neocloeon triangulifer) in Aqueous but Fed Exposures
| Autor: | David J. Soucek, Edward J. Hammer, Christan E. Schlekat, Amy Dickinson, Eric Van Genderen |
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| Rok vydání: | 2020 |
| Předmět: |
Health
Toxicology and Mutagenesis chemistry.chemical_element Zinc 010501 environmental sciences 01 natural sciences 03 medical and health sciences Mayfly Animal science Dry weight Nickel Toxicity Tests Acute Animals Environmental Chemistry Toxicity Tests Chronic Chronic toxicity Ephemeroptera 030304 developmental biology 0105 earth and related environmental sciences 0303 health sciences biology biology.organism_classification Acute toxicity Orders of magnitude (mass) chemistry Toxicity Water quality Water Pollutants Chemical |
| Zdroj: | Environmental Toxicology and Chemistry. 39:1196-1206 |
| ISSN: | 1552-8618 0730-7268 |
| Popis: | Aquatic insects are poorly represented in water quality criteria, and previous studies have suggested a lack of sensitivity in acute toxicity tests despite observational studies demonstrating the contrary. Our objectives were to determine the toxicity of nickel (Ni) and zinc (Zn) to the mayfly Neocloeon triangulifer in fed acute (96-h) and chronic exposures to estimate aqueous effect concentrations while acknowledging the importance of dietary exposure for these insects. For the chronic tests, we conducted preliminary full-life cycle (~25-30 d) and subchronic (14 d) exposures to compare the relative sensitivity of the 2 test durations under similar conditions (i.e., feeding rates). Observing similar sensitivity, we settled on 14 d as the definitive test duration. Furthermore, we conducted experiments to determine how much food could be added to a given volume of water while minimally impacting dissolved metal recovery; a ratio of food dry mass to water volume ( |
| Databáze: | OpenAIRE |
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