Cu and Cd effects on the earthworm Lumbricus rubellus in the laboratory: multivariate statistical analysis of relationships between exposure, biomarkers, and ecologically relevant parameters
| Autor: | Peter Frederick Randerson, A. John Morgan, Stephen R. Stürzenbaum, Peter Kille, Malyka Galay Burgos, Carole Winters |
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| Rok vydání: | 2005 |
| Předmět: |
Pollutant
Multivariate statistics Multivariate analysis biology Survival Soil biology Reproduction Earthworm General Chemistry Environmental Exposure biology.organism_classification Lumbricus rubellus Soil contamination Toxicology Environmental chemistry Principal component analysis Multivariate Analysis Environmental Chemistry Animals Soil Pollutants Tissue Distribution Oligochaeta Biomarkers Copper Cadmium |
| Zdroj: | Environmental sciencetechnology. 39(6) |
| ISSN: | 0013-936X |
| Popis: | This study sets out to examine the potential of a suite of novel molecular biomarkers as early warning indicators of environmental state and damage. Transcriptional responses of four genes, metallothionein 1 and 2, amine oxidase, and the lysosomal associated glycoprotein, were measured in the earthworm Lumbricus rubellus exposed to increasing concentrations of cadmium and copper in OECD soil. These responses were compared to metal body concentra tions and lifecycle parameters: survival, cocoon production, and growth. Adverse physiological effects were observed at concentrations 1/3rd to 1/10th those of the artificial soil LC50. Multivariate statistics, principal component analysis (PCA), was used to investigate the correlations between the different variables. Three key components were derived explaining 77.6% of the variance, with component 1 contributing 32.4%, component 2 contributing 26.7%, and component 3 contributing 18.5%. These components were interpreted in terms of population health, pollutant exposure, and detoxification pathways, respectively. It is proposed that the use of such a suite of biomarkers could serve as indicators of the “health” of the soil environment and provide early warning signals of potential danger to the biota or as a means of monitoring soil remediation. |
| Databáze: | OpenAIRE |
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