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Poster (Scientific congresses and symposiums)
Assessment of Mytilus galloprovincialis to monitor 19 trace elements in the Calvi Bay
Richir, Jonathan; Vermeulen, Simon; Biondo, Renzo et al.
2011Annual Beltox Congress
 

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Keywords :
Mytilus galloprovincialis; trace elements; biomonitoring
Abstract :
[en] Mussel caging with Mytilus galloprovincialis has been successively used to monitor classic trace metal (Cd, Cu, Zn, Cr, Fe, Ni, Pb) pollution of Mediterranean coastal waters at spatial scales ranging from 10 to 100km. However, its relevance as bioindicator at smaller scales (100 m - 1 km) is poorly known. Moreover, the levels of some little studied trace elements (Al, V, Mn, Sb, Sn, Ag, Mo, Se, As, Co, Be, Bi), recently identified as potential pollutants of coastal environments, have not yet been assessed in that species. In this work, M. galloprovincialis was used to monitor the 19 listed trace elements at the scale of the Calvi Bay (NW Corsica, France). Additionally, we investigated decontamination kinetics and trace element tissue speciation before and after spawning. Mytilus galloprovincialis trace element levels reflect the good water quality of the Calvi Bay, showing little spatial variations either at 100m or 1km scales. Filter feeders are only influenced by their relatively homogeneous pelagic environment (dissolved trace elements and suspended particulate matters), in contrast to organisms which inhabit typically heterogeneous benthic habitats. This bioindicator, a convincing candidate for the monitoring of the 12 little studied trace elements, effectively accumulates the 19 studied elements to 105 seawater concentrations. Mytilus galloprovincialis rapidly equilibrates (within days) with its environment, and is therefore a good indicator of chronic and stable chemical pollutions. Tissue speciation shows that the most relevant organ to monitor trace elements is the hepatopancreas. However, the important variability induced by the reproductive cycle of mussels requires using this bioindicator during its sexual dormancy.
Research center :
Laboratoire d'Océanologie
Disciplines :
Earth sciences & physical geography
Author, co-author :
Richir, Jonathan  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Vermeulen, Simon
Biondo, Renzo ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Deraikem, Alexandre
Fassin, Marjorie
Bouquegneau, Jean-Marie ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Gobert, Sylvie  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Language :
English
Title :
Assessment of Mytilus galloprovincialis to monitor 19 trace elements in the Calvi Bay
Publication date :
08 December 2011
Number of pages :
A0
Event name :
Annual Beltox Congress
Event organizer :
Belgian Society of Toxicology and Ecotoxicology
Event place :
Mechelen, Belgium
Event date :
le 08 décembre 2011
Audience :
International
Name of the research project :
Évolution de la pollution en éléments traces dans le milieu marin suite aux modifications récentes de leur production et de leur utilisation par l'homme: cas de la Méditerranée occidentale.
Available on ORBi :
since 12 January 2012

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