1. Faculty of Tropical AgriSciences Czech University of Life Sciences Prague Prague Czech Republic
2. Faculty of Agrobiology, Food and Natural Resources Czech University of Life Sciences Prague Prague Czech Republic
3. Ecole Normale Supérieure Université de Yaoundé I Yaoundé Cameroon
4. Laboratory of Experimental and Comparative Ethology UR 4443 University Sorbonne Paris Nord Villetaneuse France