Influence of cadmium on life-history characteristics of Folsomia candida (Willem) in an artificial soil substrate
| Autor: | N. M. Van Straalen, J. Brils, T. Crommentuijn |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Insecta
Offspring Health Toxicology and Mutagenesis media_common.quotation_subject Population Individuality chemistry.chemical_element Biology Isotomidae Toxicology Lethal Dose 50 Soil Animals Soil Pollutants education Chronic toxicity Ecosystem media_common Cadmium education.field_of_study Dose-Response Relationship Drug Public Health Environmental and Occupational Health General Medicine biology.organism_classification Fecundity Pollution Soil contamination chemistry Reproduction |
| Zdroj: | Ecotoxicology and environmental safety. 26(2) |
| ISSN: | 0147-6513 |
| Popis: | To understand the consequences of soil pollution on higher levels of biological organization, the chain of effects of cadmium on several interrelated responses was studied in a chronic toxicity experiment using the collembolan species Folsomia candida (Willem) in an artificial soil. The individual parameters survival, growth, and number of offspring were determined after different time intervals up to 9 weeks. The accumulation of cadmium in springtails and the population increase during the experimental period were also determined. By combining all the mentioned parameters and their development in time, a detailed picture of the action of cadmium on F. candida was obtained. In order of decreasing sensitivity the EC50 values for Von Bertalanffy growth, number of offspring, population increase, and survival were 256,326, 475, and 850 micrograms Cd/g dry soil, respectively. The ultimate LC50 value and also the equilibrium body burden were reached after about 20 days. Reproduction started later because of retarded growth, but was not affected directly and eventually reached the control level. The results are discussed in light of the seemingly contradictory ideas of Halbach (1984, Hydrobiologia 109, 79-96) and Meyer et al. (1987, Environ. Toxicol. Chem. 6, 115-126) about the sensitivity of individual and population parameters. It appears to be very important to know how individual parameters develop in time so that the most sensitive parameter and the consequences for higher levels of biological organization can be determined. |
| Databáze: | OpenAIRE |
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