1. Institute for Biological Control; Federal Research Centre for Cultivated Plants; Julius Kühn Institute; Darmstadt Germany
2. Faculty of Sciences of Bizerte; University of Carthage; Jarzouna Tunisia
3. UR13AGR09; Regional Research Centre in Horticulture and Organic Agriculture (CRRHAB) IRESA; Sousse Tunisia
4. International Centre of Insect Physiology and Ecology (ICIPE); Nairobi Kenya
5. International Potato Centre (CIP); Lima Peru
6. National Institute of Applied Sciences and Technology (INSAT); University of Carthage; Tunis Tunisia