In natural disasters, the network infrastructures are often damaged and therefore is extremely necessary that data communication networks be efficient among those people involved in the disaster in order to minimize their loss. The mobile ad hoc networks (MANET) are formed by devices that have wireless communication interfaces, such as PDAs and smartphones. These mobile networks, along with wireless devices used by rescue teams are called emergency networks. The emergency networks have mobility and offer large coverage area. The goal of this work is to make a comparison between Delay Tolerant Networks (DTN) algorithms. The routing algorithms evaluated were epidemic, PRoPHET and the bio-inspired algorithm that comes from the nature of ant colonies. Thus, it could be verified and analysed these three algorithms, and the gotten results showed that the ant colony algorithm based on pheromony is more efficient than both epidemic and PRoPHET.