Consulta: subjectFacets:"Hediste diversicolor"
Registros recuperados: 2
Data/hora: 01/06/2024 17:42:15

Behavioural and biochemical responses of two marine invertebrates Scrobicularia plana and Hediste diversicolor to copper oxide nanoparticles
Provedor de dados: 5
Autores: Buffet, Pierre-emmanuel; Tankoua, Olivia Fossi; Pan, Jin-fen; Berhanu, Deborah; Herrenknecht, Christine; Poirier, Laurence; Amiard-triquet, Claude; Amiard, Jean-claude; Berard, Jean-baptiste; Risso, Christine; Guibbolini, Marielle; Romeo, Michele; Reip, Paul; Valsami-jones, Eugenia; Mouneyrac, Catherine.
Engineered nano-sized Cu oxide particles are extensively used in diverse applications. Because aquatic environments are the ultimate "sink" for all contaminants, it is expected that nanoparticles (NP) will follow the same fate. In this study, two marine invertebrates Scrobicularia plana and Hediste diversicolor were chosen as ecotoxicological models. The aim was to evaluate behavioural (burrowing kinetics, feeding rate) and biochemical (biomarkers) responses of S. plana and H. diversicolor exposed in the laboratory to Cu (10 mu g L(-1)) added in natural seawater either in the form of engineered nanoparticles (NPs) of CuO or as dissolved Cu in 2% HNO(3). Exposure was characterized by considering (i) the physico-chemical fate of NP (ii) the fraction of...
Tipo: Text
Palavras-chave: Copper oxide nanoparticles; Behaviour; Biomarkers; Oxidative stress; Scrobicularia plana; Hediste diversicolor.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00040/15140/15856.pdf

Relationships between sediments and tissue contamination and allozymic patterns in Hediste diversicolor (Polychaeta Nereididae) in the Pialassa lagoons (north Adriatic Sea)
Provedor de dados: 5
Autores: Virgilio, M; Baroncini, N; Trombini, C; Abbiati, M.
An increasing number of investigations revealed that responses of populations to environmental stressors may be genetically dependent. Occurrence of genetic adaptation to high concentrations of heavy metals in Hediste diversicolor local ecotypes has also been hypothesised. Analyses of allozymic patterns are a promising tool for the genetic monitoring of environmental stressors. The aim of this study was to investigate whether the allozymic patterns of H. diversicolor could be affected by levels of contamination. Five sites were investigated: four in a polluted brackish habitat, the Pialassa lagoons, and a reference site in the Lamone estuary. Total mercury was used as a tracer of the overall level of contamination. Concentrations of mercury were quantified...
Tipo: Text
Palavras-chave: Hediste diversicolor; Contamination; Structure génétique; Adaptation; Systèmes enzymatiques; Hediste diversicolor; Contamination; Genetic structure; Adaptation; Allozyme.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00322/43288/43023.pdf