Fig. 1

On the left, map of Cameroon showing the rural and peri-urban sites, with a close-up on Yaoundé for the urban sites. On the right, simplified representation of the urbanization gradient, going from urban sites to three rural sites passing through peri-urban sites, and of the distribution of the three ethnic groups (Bamileke, Bassa, Beti). Trends of fruit production and consumption are indicated by gray scales and fruit trade flows by a black arrow