Toxicity of environmentally realistic concentrations of chlorpyrifos and terbuthylazine in indoor microcosms
| Autor: | Maria José Cerejeira, Michiel A. Daam, Ana Santos Pereira |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Environmental Engineering Health Toxicology and Mutagenesis Daphnia magna Rotifer 010501 environmental sciences 01 natural sciences Toxicology 03 medical and health sciences chemistry.chemical_compound Animals Environmental Chemistry Pesticides Ecosystem 0105 earth and related environmental sciences biology Herbicides Triazines Research Public Health Environmental and Occupational Health General Medicine General Chemistry Terbuthylazine Pesticide biology.organism_classification Pollution 030104 developmental biology Daphnia chemistry Chlorpyrifos Toxicity Environmental Pollutants Microcosm Copepod |
| Zdroj: | Chemosphere. 182:348-355 |
| ISSN: | 0045-6535 |
| Popis: | Few studies have been conducted into the evaluation of environmentally realistic pesticide mixtures using model ecosystems. In the present study, the effects of single and combined environmentally realistic concentrations of the herbicide terbuthylazine and the insecticide chlorpyrifos were evaluated using laboratory microcosms. Direct toxic effects of chlorpyrifos were noted on copepod nauplii and cladocerans and the recovery of the latter was likely related with the decrease observed in rotifer abundances. Terbuthylazine potentiated the effect of chlorpyrifos on feeding rates of Daphnia magna, presumably by triggering the transformation of chlorpyrifos to more toxic oxon-analogs. Possible food-web interactions resulting from multiple chemical (and other) stressors likely to be present in edge-of-field water bodies need to be further evaluated. |
| Databáze: | OpenAIRE |
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