English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/43198
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Toxicity and bioaccumulation of copper and lead in five marine microalgae

AuthorsDebelius, Bibiana; Forja, Jesús M.; Del Valls, T. A.; Lubián, Luis M. CSIC ORCID
Marine microalgae
Exposition toxicity tests
Toxic cellular quota
Growth inhibition
Issue Date8-May-2009
CitationEcotoxicology and Environmental Safety 72(5): 1503-1513 (2009)
AbstractOn five marine microalgae with the same biovolume quantity (Tetraselmis chuii, Rhodomonas salina, Chaetoceros sp., Isochrysis galbana (T-iso) and Nannochloropsis gaditana) 72-h exposure toxicity tests with copper and lead were performed. For both metals, 72-h EC50s showed T. chuii as the most tolerant and R. salina as one of the most sensitive. Besides copper and lead EC50 concentrations, metal concentrations in solution and accumulated on/in the cell where also analysed. T. chuii, the most tolerant species accumulated high copper concentrations (EC50(Cu)=330 μg L−1; EC50(Pb)=2600 μg L−1), and R. salina the most sensitive to copper, accumulated the highest amount of this metal (EC50(Cu)=50 μg L−1). Results of this study show that there is no specific relationship between cell tolerance and accumulated metal on/in the cell. On the other hand, due to an established evidence of the influence of cellular density in microalgae toxicity tests, this effect was also studied. Results showed reduced EC50 values when initial cellular densities decreased. In this study, the term “toxic cellular quota” was used to express all data. This allowed, in a single expression, the combination of two parameters that clearly influence growth, cellular density and toxic concentration.
Description11 páginas, 8 figuras, 5 tablas.
Publisher version (URL)http://dx.doi.org/10.1016/j.ecoenv.2009.04.006
Appears in Collections:(ICMAN) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.