Food Concentration Affects the Life History Response of Ceriodaphnia cf. dubia to Chemicals with Different Mechanisms of Action
| Autor: | Richard P. Lim, R. M. Rose, M.St.J. Warne |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Insecticides
Carbamate Health Toxicology and Mutagenesis medicine.medical_treatment Phenylcarbamates Toxicology Food-Drug Interactions chemistry.chemical_compound medicine Animals Fenoxycarb No-Observed-Adverse-Effect Level Aniline Compounds biology Reproduction Public Health Environmental and Occupational Health Ceriodaphnia dubia General Medicine Pesticide biology.organism_classification Pollution Daphnia chemistry Cladocera Chlorpyrifos Toxicity Carbamates Food Deprivation Xenobiotic |
| Zdroj: | Ecotoxicology and Environmental Safety. 51:106-114 |
| ISSN: | 0147-6513 |
| DOI: | 10.1006/eesa.2001.2137 |
| Popis: | The effect of three chemicals with different mechanisms of action (3,4-dichloroaniline, fenoxycarb, and chlorpyrifos) on the life history response of the cladoceran Ceriodaphnia cf. dubia was examined under both limited (3×10 4 cells/mL) and abundant (15×10 4 cells/mL) food conditions. Toxicity tests were conducted at both food concentrations simultaneously for each chemical, and cladocerans were examined daily from less than 24 h old until their death. A range of life history parameters were calculated, including mean brood sizes, survival, net reproductive rate, and population growth rate. The toxicity of 3,4-dichloroaniline was not significantly affected by food concentration. However, limited food significantly decreased the toxicity of fenoxycarb, and significantly increased the toxicity of chlorpyrifos. The effect of food concentration on toxicity appears to depend on the mechanism by which the chemical exerts its toxicity and on food–chemical interactions. Possible mechanisms for the different effects of food concentration on toxicity are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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