[The dynamic ecology of virus-vector system (author's transl)].

The phenomenon of arbovirus transmission by their vectors is based upon the constitution of virus-vector systems, not only at the species level, but also at an infra-specific level. The study of such systems leads to consider some particular aspects of their ecology which can have important epidemiological consequences (selection of viral clones by the vector, transovarial and sexual transmissions). Finely the authors approach the question of evolution of virus-vector systems, which appear as adaptative, functional and temporary associations.