1. Faculty of Biology, University of Belgrade, Studentski trg 16, Belgrade, Serbia
2. BeeSources, Beekeeping Consultancy, Bologna 40132, Italy
3. Department of Genetics of Populations and Ecogenotoxicology, Institute for Biological Research ‘Siniša Stanković’ – National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia