1. Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche; Università degli Studi di Palermo; Via Archirafi 18, 90123 Palermo Italy
2. African Primate Initiative for Ecology and Speciation (APIES); University of Fort Hare, and Africa Earth Observatory Network (AEON), Earth Stewardship Science Research Institute, Nelson Mandela University; 6031 Port Elizabeth South Africa