Anderson, Craig  ORCID: https://orcid.org/0000-0002-2832-9313, Kille, Peter ORCID: https://orcid.org/0000-0001-6023-5221, Lawlor, A.J. and Spurgeon, David J.
2013.
Life-history effects of arsenic toxicity in clades of the earthworm Lumbricus rubellus.
Environmental Pollution
172
, pp. 200-207.
10.1016/j.envpol.2012.09.005
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Abstract
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: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Biosciences |
| Subjects: | Q Science > QH Natural history Q Science > QH Natural history > QH301 Biology |
| Uncontrolled Keywords: | Population growth rate ; EC50 ; Genotype ; Bioaccumulation |
| ISSN: | 0269-7491 |
| Last Modified: | 21 Oct 2022 10:56 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/41789 |
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