1 Wastewater alters feeding rate but not vitellogenin level of Gammarus fossarum (Amphipoda) Barbara Gansera,b, Mirco Bundschuha,c, Inge Wernerb, Nadzeya Homazavab, Etienne Vermeirssenb, Christoph Moschetd, Cornelia Kienleb* a Institute for Environmental Sciences, University of Koblenz-Landau, Fortstraße 7, D-76829 Landau, Germany b Swiss Centre for Applied Ecotoxicology Eawag-EPFL, Überlandstrasse 133, 8600 Dübendorf, Switzerland c Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Lennart Hjelms väg 9, 75007 Uppsala, Sweden d Eawag: Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland * Corresponding author: Cornelia Kienle, cornelia.kienle@oekotoxzentrum.ch Address: Überlandstrasse 133, 8600 Dübendorf, Switzerland