Bee Research Department, National Center for Agriculture Research and Extension, Baq'a, Jordan;
Department of Plant Protection, Suez Canal University, Ismailia, Egypt;
Extension Department, Qadysia Governate Agricultural Directorate, Iraq;
Department of Plant Protection, Sana'a University, Sana'a, Yemen;
National Federation of Tunisian beekeepers, Tunis, Tunisia;
Ruchers EI Bakri, Hay Assalam-Sidi Slimane, Rabat, Morocco;
Institute of Bee Health, Vetsuisse Faculty, University of Bern, Bern, Switzerland;
Department of Ecology, Swedish University of Agricultural Sciences, Uppsala,Sweden;
Department of Biology, M'hamed Bougara University of Boumerdes, ENS Kouba, Algeries;
Bee Research Department, National Center for Agriculture Research and Extension, Baq'a, Jordan;
Laboratory of Applied Animal Biology, University Badji-Mokhtar, Annaba, Algeria;
Department of Bee Research, Environment, Natural Resources and Desertification Research Institute, National Centre for Research,Khartoum, Sudan;
Bee Research Department, National Center for Agriculture Research and Extension, Baq'a, Jordan;
Bee Research Department, National Center for Agriculture Research and Extension, Baq'a, Jordan;
Faculty of Agriculture and Veterinary Sciences, Lebanese University, Beirut, Lebanon;
West Bank, State of Palestine,Halhul-Hebron District, Palestine;
