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Life cycle toxicity assessment of earthworms exposed to cadmium-contaminated soils

Cadmium (Cd) is of great concern in the soil environment and it can damage terrestrial organisms. The purpose of this study was to employ a toxicokinetic/toxicodynamic (TK/TD) approach to investigate the effects of toxicologically relevant Cd accumulation on the life cycle growth of earthworms ( Lum... Full description

Journal Title: Ecotoxicology 2017, Vol.26(3), pp.360-369
Main Author: Chen, Wei-Yu
Other Authors: Li, Wen-Hsuan , Ju, Yun-Ru , Liao, Chung-Min , Liao, Vivian
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0963-9292 ; E-ISSN: 1573-3017 ; DOI: 10.1007/s10646-017-1769-4
Link: http://dx.doi.org/10.1007/s10646-017-1769-4
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recordid: springer_jour10.1007/s10646-017-1769-4
title: Life cycle toxicity assessment of earthworms exposed to cadmium-contaminated soils
format: Article
creator:
  • Chen, Wei-Yu
  • Li, Wen-Hsuan
  • Ju, Yun-Ru
  • Liao, Chung-Min
  • Liao, Vivian
subjects:
  • Cadmium
  • Earthworm
  • Life cycle toxicity
  • Agricultural soils
  • Ecological risk assessment
ispartof: Ecotoxicology, 2017, Vol.26(3), pp.360-369
description: Cadmium (Cd) is of great concern in the soil environment and it can damage terrestrial organisms. The purpose of this study was to employ a toxicokinetic/toxicodynamic (TK/TD) approach to investigate the effects of toxicologically relevant Cd accumulation on the life cycle growth of earthworms ( Lumbricus rubellus and Eisenia fetida ) and to assess potential terrestrial ecosystem risk. We reanalyzed growth toxicity and whole body and pellet accumulation data linked with TK/TD and life cycle growth models to estimate key rate constants. The growth risk of earthworms exposed to Cd was also assessed. This study found that the estimated whole body killing rate constant (0.114 g d μg −1 ) was much lower than that of pellet (0.248 g d μg −1 ). The recovery rate constant for whole body (6.02 d −1 ) was much higher than that of pellet (2.91 d −1 ). We also employed a life cycle-based probabilistic risk assessment model to estimate the growth inhibition risk for earthworms in response to environmentally relevant concentrations of Cd in Taiwan. Results showed that earthworms had a 90% growth inhibition probability risk of body weight, which was lower than 872.33 mg based on assessment of toxicologically relevant Cd accumulation. This study suggests that toxicologically relevant Cd accumulation could accurately reflect the capacity of Cd toxicity to earthworms. The integrated life cycle toxicity of earthworms exposed to Cd in this study provides a robust and applicable tool for the management of ecological risk assessment of Cd-contaminated soil.
language: eng
source:
identifier: ISSN: 0963-9292 ; E-ISSN: 1573-3017 ; DOI: 10.1007/s10646-017-1769-4
fulltext: fulltext
issn:
  • 1573-3017
  • 15733017
  • 0963-9292
  • 09639292
url: Link


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subjectCadmium ; Earthworm ; Life cycle toxicity ; Agricultural soils ; Ecological risk assessment
descriptionCadmium (Cd) is of great concern in the soil environment and it can damage terrestrial organisms. The purpose of this study was to employ a toxicokinetic/toxicodynamic (TK/TD) approach to investigate the effects of toxicologically relevant Cd accumulation on the life cycle growth of earthworms ( Lumbricus rubellus and Eisenia fetida ) and to assess potential terrestrial ecosystem risk. We reanalyzed growth toxicity and whole body and pellet accumulation data linked with TK/TD and life cycle growth models to estimate key rate constants. The growth risk of earthworms exposed to Cd was also assessed. This study found that the estimated whole body killing rate constant (0.114 g d μg −1 ) was much lower than that of pellet (0.248 g d μg −1 ). The recovery rate constant for whole body (6.02 d −1 ) was much higher than that of pellet (2.91 d −1 ). We also employed a life cycle-based probabilistic risk assessment model to estimate the growth inhibition risk for earthworms in response to environmentally relevant concentrations of Cd in Taiwan. Results showed that earthworms had a 90% growth inhibition probability risk of body weight, which was lower than 872.33 mg based on assessment of toxicologically relevant Cd accumulation. This study suggests that toxicologically relevant Cd accumulation could accurately reflect the capacity of Cd toxicity to earthworms. The integrated life cycle toxicity of earthworms exposed to Cd in this study provides a robust and applicable tool for the management of ecological risk assessment of Cd-contaminated soil.
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titleLife cycle toxicity assessment of earthworms exposed to cadmium-contaminated soils
descriptionCadmium (Cd) is of great concern in the soil environment and it can damage terrestrial organisms. The purpose of this study was to employ a toxicokinetic/toxicodynamic (TK/TD) approach to investigate the effects of toxicologically relevant Cd accumulation on the life cycle growth of earthworms ( Lumbricus rubellus and Eisenia fetida ) and to assess potential terrestrial ecosystem risk. We reanalyzed growth toxicity and whole body and pellet accumulation data linked with TK/TD and life cycle growth models to estimate key rate constants. The growth risk of earthworms exposed to Cd was also assessed. This study found that the estimated whole body killing rate constant (0.114 g d μg −1 ) was much lower than that of pellet (0.248 g d μg −1 ). The recovery rate constant for whole body (6.02 d −1 ) was much higher than that of pellet (2.91 d −1 ). We also employed a life cycle-based probabilistic risk assessment model to estimate the growth inhibition risk for earthworms in response to environmentally relevant concentrations of Cd in Taiwan. Results showed that earthworms had a 90% growth inhibition probability risk of body weight, which was lower than 872.33 mg based on assessment of toxicologically relevant Cd accumulation. This study suggests that toxicologically relevant Cd accumulation could accurately reflect the capacity of Cd toxicity to earthworms. The integrated life cycle toxicity of earthworms exposed to Cd in this study provides a robust and applicable tool for the management of ecological risk assessment of Cd-contaminated soil.
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abstractCadmium (Cd) is of great concern in the soil environment and it can damage terrestrial organisms. The purpose of this study was to employ a toxicokinetic/toxicodynamic (TK/TD) approach to investigate the effects of toxicologically relevant Cd accumulation on the life cycle growth of earthworms ( Lumbricus rubellus and Eisenia fetida ) and to assess potential terrestrial ecosystem risk. We reanalyzed growth toxicity and whole body and pellet accumulation data linked with TK/TD and life cycle growth models to estimate key rate constants. The growth risk of earthworms exposed to Cd was also assessed. This study found that the estimated whole body killing rate constant (0.114 g d μg −1 ) was much lower than that of pellet (0.248 g d μg −1 ). The recovery rate constant for whole body (6.02 d −1 ) was much higher than that of pellet (2.91 d −1 ). We also employed a life cycle-based probabilistic risk assessment model to estimate the growth inhibition risk for earthworms in response to environmentally relevant concentrations of Cd in Taiwan. Results showed that earthworms had a 90% growth inhibition probability risk of body weight, which was lower than 872.33 mg based on assessment of toxicologically relevant Cd accumulation. This study suggests that toxicologically relevant Cd accumulation could accurately reflect the capacity of Cd toxicity to earthworms. The integrated life cycle toxicity of earthworms exposed to Cd in this study provides a robust and applicable tool for the management of ecological risk assessment of Cd-contaminated soil.
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doi10.1007/s10646-017-1769-4
orcidid0000-0002-4676-9953
pages360-369
date2017-04