[Behavioral ecology of the transmission of rabies].

Red fox behavioural ecology was studied in a rabies-enzootic area in order to determine how population size is balanced despite rabies-induced mortality. The results suggest that the red fox rabies virus equilibrium evolves, and is due to the solitary behaviour pattern of the fox which reduces the risk of virus transmission from on territory to another; and to the subsequent autumn dispersal, which allows the local fox population to recover in the space of under a year. The hypothesis is put forward that rabies does not seem to regulate fox population size. There would therefore be no reason to fear a population explosion after oral immunisation of foxes against rabies.