Assessing ecotoxicity and uptake of metals and metalloids in relation to two different earthworm species (Eiseina horterzsis and Lumbricus terrestris)
2013
Leveque , Thibaut (Université de ToulouseEcolab Laboratoire d'écologie fonctionnelle, Castanet-Tolosan31326 Castanet-Tolosan (France). INP-ENSATUMR 5245 CNRS-INP-UPS) | Capowiez , Yvan (INRA , Avignon (France). UR 1115 Unité de recherche Plantes et Systèmes de Culture Horticoles) | Schreck , Eva (Géosciences Environnement Toulouse, Toulouse(France). UMR 5563 CNRS/UPS/IRD/CNES) | Mazzia , Christophe (Institut Méditerranéen de Biodiversité et d'Écologie Marine et Continentale(France). UMR CNRS 7263) | Auffan , Mélanie (Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement, Aix-en-Provence(France). Europôle méditerranéen de l’Arbois) | Foucault , Yann (Université de ToulouseEcolab Laboratoire d'écologie fonctionnelleSociété de Traitement Chimique des Métaux, Castanet-Tolosan31326 Castanet-Tolosan Toulouse(France). INP-ENSATUMR 5245 CNRS-INP-UPS) | Austruy , Annabelle (Université de ToulouseEcolab Laboratoire d'écologie fonctionnelle, Castanet-Tolosan31326 Castanet-Tolosan (France). INP-ENSATUMR 5245 CNRS-INP-UPS) | Dumat , Camille (auteur de correspondance) (Université de ToulouseEcolab Laboratoire d'écologie fonctionnelle, Castanet-Tolosan31326 Castanet-Tolosan (France). INP-ENSATUMR 5245 CNRS-INP-UPS)
Due to diffuse atmospheric fallouts of process particles enriched by metals and metalloids, polluted soils concern large areas at the global scale. Useful tools to assess ecotoxicity induced by these polluted soils are therefore needed. Earthworms are currently used as biotest, however the influence of specie and earthworm behaviour, soil characteristics are poorly highlighted. Our aim was therefore to assess the toxicity of various polluted soils with process particles enriches by metals and metalloids (Pb, Cd, Cu, Zn, As and Sb) collected from a lead recycling facility on two earthworm species belonging to different ecological types and thus likely to have contrasted behavioural responses (Eiseina hortensis and Lumbricus terrestris). The combination of behavioural factors measurements (cast production and biomass) and physicochemical parameters such as metal absorption, bioaccumulation by earthworms and their localization in invertebrate tissues provided a valuable indication of pollutant bioavailability and ecotoxicity. Soil characteristics influenced ecotoxicity and metal uptake by earthworms, as well as their soil bioturbation.
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