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Effects of phenanthrene on the mortality, growth, and anti-oxidant system of earthworms (Eisenia fetida) under laboratory conditions.
Chemosphere. 2011 Apr; 83(4):429-34.C

Abstract

To assess the toxic effects of phenanthrene on earthworms, we exposed Eisenia fetida to artificial soils supplemented with different concentrations (0.5, 2.5, 12.5, mgkg(-1) soil) of phenanthrene. The residual phenanthrene in the soil, the bioaccumulation of phenanthrene in earthworms, and the subsequent effects of phenanthrene on growth, anti-oxidant enzyme activities, and lipid peroxidation (LPO) were determined. The degradation rate of low concentrations of phenanthrene was faster than it was for higher concentrations, and the degradation half-life was 7.3d (0.5 mgkg(-1)). Bioaccumulation of phenanthrene in the earthworms decreased the phenanthrene concentration in soils, and phenanthrene content in the earthworms significantly increased with increasing initial soil concentrations. Phenanthrene had a significant effect on E. fetida growth, and the 14-d LC(50) was calculated as 40.67 mgkg(-1). Statistical analysis of the growth inhibition rate showed that the concentration and duration of exposure had significant effects on growth inhibition (p<0.001). Superoxide dismutase (SOD) activity increased at the beginning (2 and 7d) and decreased in the end (14 and 28 d). Catalase (CAT) activity in all treatments was inhibited from 1 to 14 d of exposure. However, no significant perturbations in malondialdehyde (MDA) content were noted between control and phenanthrene-treated earthworms except after 2d of exposure. These results revealed that bioaccumulation of phenanthrene in E. fetida caused concentration-dependent, sub-lethal toxicity. Growth and superoxide dismutase activity can be regarded as sensitive parameters for evaluating the toxicity of phenanthrene to earthworms.

Authors+Show Affiliations

College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21296377

Citation

Wu, Shijin, et al. "Effects of Phenanthrene On the Mortality, Growth, and Anti-oxidant System of Earthworms (Eisenia Fetida) Under Laboratory Conditions." Chemosphere, vol. 83, no. 4, 2011, pp. 429-34.
Wu S, Wu E, Qiu L, et al. Effects of phenanthrene on the mortality, growth, and anti-oxidant system of earthworms (Eisenia fetida) under laboratory conditions. Chemosphere. 2011;83(4):429-34.
Wu, S., Wu, E., Qiu, L., Zhong, W., & Chen, J. (2011). Effects of phenanthrene on the mortality, growth, and anti-oxidant system of earthworms (Eisenia fetida) under laboratory conditions. Chemosphere, 83(4), 429-34. https://doi.org/10.1016/j.chemosphere.2010.12.082
Wu S, et al. Effects of Phenanthrene On the Mortality, Growth, and Anti-oxidant System of Earthworms (Eisenia Fetida) Under Laboratory Conditions. Chemosphere. 2011;83(4):429-34. PubMed PMID: 21296377.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of phenanthrene on the mortality, growth, and anti-oxidant system of earthworms (Eisenia fetida) under laboratory conditions. AU - Wu,Shijin, AU - Wu,Ermiao, AU - Qiu,Lequan, AU - Zhong,Weihong, AU - Chen,Jianmeng, Y1 - 2011/02/05/ PY - 2010/10/16/received PY - 2010/12/10/revised PY - 2010/12/26/accepted PY - 2011/2/8/entrez PY - 2011/2/8/pubmed PY - 2011/5/25/medline SP - 429 EP - 34 JF - Chemosphere JO - Chemosphere VL - 83 IS - 4 N2 - To assess the toxic effects of phenanthrene on earthworms, we exposed Eisenia fetida to artificial soils supplemented with different concentrations (0.5, 2.5, 12.5, mgkg(-1) soil) of phenanthrene. The residual phenanthrene in the soil, the bioaccumulation of phenanthrene in earthworms, and the subsequent effects of phenanthrene on growth, anti-oxidant enzyme activities, and lipid peroxidation (LPO) were determined. The degradation rate of low concentrations of phenanthrene was faster than it was for higher concentrations, and the degradation half-life was 7.3d (0.5 mgkg(-1)). Bioaccumulation of phenanthrene in the earthworms decreased the phenanthrene concentration in soils, and phenanthrene content in the earthworms significantly increased with increasing initial soil concentrations. Phenanthrene had a significant effect on E. fetida growth, and the 14-d LC(50) was calculated as 40.67 mgkg(-1). Statistical analysis of the growth inhibition rate showed that the concentration and duration of exposure had significant effects on growth inhibition (p<0.001). Superoxide dismutase (SOD) activity increased at the beginning (2 and 7d) and decreased in the end (14 and 28 d). Catalase (CAT) activity in all treatments was inhibited from 1 to 14 d of exposure. However, no significant perturbations in malondialdehyde (MDA) content were noted between control and phenanthrene-treated earthworms except after 2d of exposure. These results revealed that bioaccumulation of phenanthrene in E. fetida caused concentration-dependent, sub-lethal toxicity. Growth and superoxide dismutase activity can be regarded as sensitive parameters for evaluating the toxicity of phenanthrene to earthworms. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/21296377/Effects_of_phenanthrene_on_the_mortality_growth_and_anti_oxidant_system_of_earthworms__Eisenia_fetida__under_laboratory_conditions_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(10)01517-1 DB - PRIME DP - Unbound Medicine ER -