1. Institute of Evolutionary Ecology and Conservation Genomics, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
2. Institute for Biology, Martin Luther University Halle-Wittenberg, Halle (Saale) 061200, Germany
3. Department of Ecology, Swedish University of Agricultural Sciences, Uppsala 750 07, Sweden
4. Norwegian Beekeepers Association, Kløfta 2040, Norway
5. INRAE, UR 406 Abeilles et Environnement, Avignon 84914, France
6. Department of Food Safety and Infection Biology, Norwegian University of Life Sciences, Ås 1432, Norway
7. Institute of Bee Health, Vetsuisse Faculty, University of Bern, Bern 3097, Switzerland
8. Entomology & Plant Pathology, Auburn University, Auburn, AL 36832, USA
9. Department of Biochemistry and Microbiology, Ghent University, Ghent 9000, Belgium
10. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103, Germany