1. International Centre of Insect Physiology and Ecology Nairobi Kenya
2. Chemistry Department Kenyatta University Nairobi Kenya
3. East Africa, International Institute of Tropical Agriculture Nairobi Kenya
4. Department of Biology, Section Nematology Ghent University Ghent Belgium
5. Norwegian Institute of Bioeconomy Research Ås Norway
6. Department of Entomology and Plant Pathology North Carolina State University Raleigh NC USA