The "Effects of Environmental Contaminants" group studies the mechanisms underlying the toxicity of emerging pollutants (nanomaterials, endocrine disruptors, biocides or mycotoxins), as well as their bioaccumulation, particularly in fish. Two approaches are followed to reach this aim: in vitro assays in cell lines and in vivo assays, in aquatic organisms (algae, daphnia and fish). Cell assays study the short- and long-term effect on cell viability, sublethal effects, and substance internalization.