1. Behavioral Physiology and Sociobiology, Julius-Maximilians-Universität Würzburg, 97070 Würzburg, Germany
2. Institute of Bioanalysis, Coburg University of Applied Sciences and Arts, 96450 Coburg, Germany
3. Landesbetrieb Landwirtschaft Hessen, Bee Institute Kirchhain, 35274 Kirchhain, Germany
4. Bayreuth Center of Ecology and Environmental Research, University of Bayreuth, 95447 Bayreuth, Germany