1. Wildlife Research Center of Kyoto University, Japan
2. l'Ecole Polytechnique d'Abomey-Calavi, Département des productions animales, Benin
3. Graduate School of Science, Kyoto University, Japan
4. Agricultural Research Center, University of Ghana, Ghana
5. Kobe Kachoen, Japan
6. Faculty of Applied Biological Sciences, Gifu University, Japan