Life-history effects of arsenic toxicity in clades of the earthworm Lumbricus rubellus
Anderson, C.J.; Kille, P.; Lawlor, A.J.; Spurgeon, D.J. ORCID: https://orcid.org/0000-0003-3264-8760. 2013 Life-history effects of arsenic toxicity in clades of the earthworm Lumbricus rubellus. Environmental Pollution, 172. 200-207. 10.1016/j.envpol.2012.09.005
Full text not available from this repository.Abstract/Summary
Exposures of Lumbricus rubellus to a series of arsenic concentrations in soil were used to assess life-stage (juvenile, adult) and genotype specific sensitivities, to calculate population growth rate (λ) and to assess patterns of As accumulation. Significant mortality was seen in juveniles at 125 mg/kg As, while growth and maturation was affected from 36 mg/kg and above. In adults, cocoon production at the highest concentration (125 mg/kg) was significantly reduced. Phylogenetic analysis was performed by comparison of mitochondrial sequences to establish genotypic variation among juveniles. Three clades with more than 7.5% divergent were described, with 70% of earthworms belonging to a single clade. Date of and mass at maturation was significantly different between clades, but clades were not differentially As sensitive. Parameter λ was reduced at 36 mg/kg As and was negative at 125 mg/kg As, suggesting impacts and population stability and potential extinction at environmentally relevant concentrations.
Item Type: | Publication - Article |
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Digital Object Identifier (DOI): | 10.1016/j.envpol.2012.09.005 |
UKCEH and CEH Sections/Science Areas: | Acreman Shore |
ISSN: | 0269-7491 |
Additional Keywords: | population growth rate, EC50, genotype, bioaccumulation |
Date made live: | 18 Mar 2014 09:48 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/504423 |
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