Effects of PAHs and dioxins on the earthworm Eisenia andrei: a multivariate approach for biomarker interpretation.

Sforzini, S, Moore, MN, Boeri, M, Bencivenga, M and Viarengo, A 2015 Effects of PAHs and dioxins on the earthworm Eisenia andrei: a multivariate approach for biomarker interpretation.. Environmental Pollution, 196. 60-71. https://doi.org/10.1016/j.envpol.2014.09.015

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In this study, a battery of biomarkers was utilised to evaluate the stress syndrome induced in the earthworm Eisenia andrei by exposure to environmentally realistic concentrations of benzo[a]pyrene (B[a]P) and 2,3,7,8-tetrachlorodibenzo-para-dioxin (TCDD) in OECD soil. The set of tests was then employed to assess the toxicity of field soils contaminated with organic xenobiotic compounds (such as PAHs, dioxins and PCBs). Biomarker responses (comprising biomarkers of stress and of genotoxicity) varied depending on chemicals, dose and time of exposure; and among the different polluted field soils. The results highlighted an impairment of immune and metabolic functions and genotoxic damage in worms exposed also to lower bioavailable concentrations of toxic chemicals. Multivariate analysis of biomarker data showed that all different contaminated soils had a detrimental effect on the earthworms; control animals being clearly separated from the treated ones. A separation between temporal and concentration factors were also evident for B[a]P and TCDD treatments; and field contaminated soils were further differentiated reflecting a diverse contamination. Multivariate analysis also demonstrated that lysosomal membrane stability can be considered as a predictive tool of the adverse effects on worm health status provoked by increasing bioavailable concentrations of toxic chemicals.

Item Type: Publication - Article
Subjects: Ecology and Environment
Divisions: Plymouth Marine Laboratory > Other (PML)
Depositing User: Mike Moore
Date made live: 03 May 2018 14:56
Last Modified: 25 Apr 2020 09:58
URI: https://plymsea.ac.uk/id/eprint/7603

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