1Department of the Biology of Animal Organisms, Faculty of Science, P. O. Box 24157, University of Douala, Cameroon.
2Department of the Biology of Plant Organisms, Faculty of Science, P. O. Box 24157, University of Douala, Cameroon.
3Institut de Recherche d’Ecologie Tropicale (IRET), B. P. 13354 Libreville, Gabon.
4Laboratory of plant Biology and Ecology, University of Ouagadougou 03 P. O. Box 848, Ouagadougou 03, Burkina Faso.
5Department of Plant Biology and Physiology, P. O. Box 812, University of Yaoundé I, Cameroon.
6Department of Animal Biology and Physiology, P. O. Box 812, University of Yaoundé I, Cameroon.
Email: [email protected]
