This thesis aiming at studying intergenerational solidarities is based on a survey I conducted in six Haalpulaar villages around Matam, Senegal. Remittances sent by migrant children to their parents in the village provide a valuable support. In the first chapter I present the sociopolitical context of the area. It appears that belonging to a caste (noble/artisan/slave) still determines the social position of an individual in the village. In chapter 2, I suggest that the family prestige represents an old-age security. As a result, while belonging to a prestigious family lowers the probability of migrating, it raises the probability of frequently remitting to the patriarch. Chapter 3 focuses on the schooling of the children who remained in th...