Species-specific responses of planktivorous fish to the introduction of a new piscivore: implications for prey fitness

FRANZ HÖLKER* , , HENDRIK DÖRNER* , , TORSTEN SCHULZE* , § , SUSANNE S. HAERTEL-BORER* , ‡,– , SCOTT D. PEACOR** AND THOMAS MEHNER* *Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany AGRIFISH Unit, DG Joint Research Centre (JRC), Institute for the Protection and Security of the Citizen (IPSC), European Commission, Ispra, Italy Institute of Hydrobiology, Technische Universit}at Dresden, Dresden, Germany Limnological Institute, University of Konstanz, Konstanz, Germany Swiss Fisheries Advisory Service (FIBER), c/o EAWAG, Kastanienbaum, Switzerland Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI, and Great Lakes Environmental Research Laboratory (NOAA), Ann Arbor, MI, U.S.A.