About the Authors
Department of Marine Ecology and Evolution, Royal Netherlands Institute for Sea Research (NIOZ), Texel, The Netherlands
Animal Ecology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, Haren, The Netherlands
The authors have declared that no competing interests exist.
JvG, TP, AD, BS, and CK conceived and designed the experiments. JvG, TP, AD, BS, and CK performed the experiments. JvG and BS analyzed the data. JvG and TP wrote the paper.