In the last few years, the advance of multimedia applications has prompted researchers to undertake the task of routing multimedia data through Manet. This task is rather difficult due to the highly dynamic topology of mobile ad hoc networks and their limited bandwidth. Actually, different routing algorithms are proposed in order to route various kinds of sources (such as voice, video, or data) with diverse traffic characteristics and Quality of Service Requirements (QoS). These algorithms must take into account significant traffic problems such as packet losses, transmission delays, delay variations, etc, caused mainly by congestion in the networks. The prediction of these problems in real time is quite difficult, making the effectiveness of “traditional” protocols based on analytical models questionable. We propose in this paper a solution based on swarm intelligence paradigm that we find more adapted for this kind of problems. Categories and Subject Descriptors C.2.1 [Computer-...