Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/6378
Title: Effect of the exposure to metal lead on the regenerative ability of Lumbriculus variegatus (Oligochaeta)
Author: Sardo, AM
Pereira, L
Gerhardt, A
Soares, AMVM
Keywords: Lumbriculus variegatus
Regeneration
Lead
Metal
Sediment
Toxicity
Issue Date: 2011
Publisher: Elsevier
Abstract: Lumbriculus variegatus is a recommended species for use in sediment toxicity tests and is known to have a remarkable power of segmental regeneration. Here, we tested the effects of a chemical stressor on the regenerative ability of L. variegatus and investigated the potential of regenerative ability as an additional new parameter in standard toxicity tests. The worms were cut into two equal segments, and exposed to various concentrations of lead. Two assays were performed: one with sediment spiked with lead and the other with water spiked with lead. The endpoints were segmental regeneration, survival and behaviour. Regenerative ability was clearly affected by exposure to lead-contaminated sediment and lead-contaminated water. Organisms exposed to lead grew more slowly than those not exposed; worms exposed to contaminated water showed higher mortalities than those exposed to contaminated sediment. Results showed that L. variegatus' regenerative ability, as a developmental test parameter, is more sensitive than mortality. (C) 2010 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10773/6378
DOI: 10.1016/j.etap.2010.10.010
ISSN: 1382-6689
Appears in Collections:CESAM - Artigos
DBio - Artigos

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