1. Koret School of Veterinary Medicine; The Hebrew University of Jerusalem; P.O Box 12 Rehovot 76100 Israel
2. Wyler Department of Dryland Agriculture; French Associates Institute for Agriculture and Biotechnology of Drylands; Jacob Blaustein Institutes for Desert Research; Ben-Gurion University of the Negev; Sede-Boker Campus 84990 Midreshet Ben-Gurion Israel
3. Mitrani Department of Desert Ecology; Institute for Dryland Environmental Research; Jacob Blaustein Institutes for Desert Research; Ben-Gurion University of the Negev; Sede-Boker Campus 84990 Midreshet Ben-Gurion Israel