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Resistance to arsenic-toxicity in a population of the earthworm Lumbricus rubellus.

Langdon, Caroline J. and Piearce, Trevor G. and Black, S. and Semple, Kirk T. (1999) Resistance to arsenic-toxicity in a population of the earthworm Lumbricus rubellus. Soil Biology and Biochemistry, 31 (14). pp. 1963-1967. ISSN 0038-0717

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Abstract

Specimens of the earthworms Lumbricus terrestris L. and L. rubellus Hoffmeister from an uncontaminated site rapidly deteriorated in condition when kept in spoil rich in metal contaminants and arsenic. The site from which the spoil was collected supports several earthworm species, L. rubellus being dominant. Native L. rubellus survived for 12 weeks in spoil in the laboratory. L. rubellus collected from the spoil site and an uncontaminated site were kept for 28 d in uncontaminated soil and in soil containing 2000 mg sodium arsenate heptahydrate kg−1, the state of the specimens being recorded using a semi-quantitative assessment of earthworm condition (condition index, CI). The CI remained high for all specimens except those from the uncontaminated site kept in As-rich soil, for which mortality was 100% after 28 d. Tissue As concentrations in L rubellus from uncontaminated and contaminated sites were <1 mg kg−1 and 230 mg kg−1, respectively. In L. rubellus collected from the uncontaminated site and exposed to contaminated soil containing 2000 mg sodium arsenate heptahydrate kg−1, mean tissue As concentration was 92 mg kg−1.

Item Type: Article
Journal or Publication Title: Soil Biology and Biochemistry
Uncontrolled Keywords: Arsenic-sensitivity ; Earthworm ; Soil contamination ; Metal contaminants ; Toxicity testing
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 9307
Deposited By: Dr Trevor G Piearce
Deposited On: 04 Jun 2008 09:37
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:35
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9307

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