About the Authors
Zoological Institute, Christian-Albrechts-University, Am Botanishen Garten 1-9, 24118 Kiel, Germany
The authors have declared that no competing interests exist.
KK, FA-E, JW, GH, and TCGB conceived and designed the experiments. KK, FA-E, SS, JW, GH, and TCGB performed the experiments. KK, FA-E, SS, JW, GH, and TCGB analyzed the data. GH contributed reagents/materials/analysis tools. KK and TCGB wrote the paper.