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Title: Histopathological changes in the earthworm Eisenia andrei associated with the exposure to metals and radionuclides
Author: Lourenço, Joana
Silva, Ana
Carvalho, Fernando
Oliveira, João
Malta, Margarida
Mendo, Sónia
Gonçalves, Fernando
Pereira, Ruth
Keywords: Eisenia andrei
Issue Date: 2011
Publisher: Elsevier
Abstract: Earthworms were exposed for 56 d to a contaminated soil, from an abandoned uranium mine, and to the natural reference soil LUFA 2.2. Histological changes in earthworm’s body wall (epidermis, circular and longitudinal muscles) and gastrointestinal tract (chloragogenous tissue and intestinal epithelium) were assessed, after 0, 14 and 56 d of exposure. Results have shown alterations in all the studied tissues after 14 d of exposure (except for the intestinal epithelium), yet more severe effects were registered after 56 d of exposure. Herein we report histopathological alterations as a good biomarker for the evaluation of soil quality. We also demonstrate that morphological changes in the body wall and gastrointestinal tract, are important endpoints that could be added to earthworm’s standardized tests, for the evaluation of soil toxicity, as part of the risk assessment of contaminated areas.
Peer review: yes
DOI: 10.1016/j.chemosphere.2011.08.027
ISSN: 0045-6535
Appears in Collections:CESAM - Artigos
DBio - Artigos

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