[Gastrointestinal helminths of wild ruminants: observations on the chamois (Rupicapra rupicapra L.) in the Val Belviso reserve].

The results obtained in a survey on the gastrointestinal helminths of 32 chamois of the Riserva of Valbelviso on the Alpi Orobie are reported. All the animals were infested: the species identified with more frequence were O. circumcinta, M. marshalli, N. filicollis. Of great significance was the diffusion of N. filicollis, compared with other species of this genus, typical of the wild ruminants; Oe. radiatum, never previously observed in chamois, was also found. These results show that the promiscuity of wild and domestic ruminants in the pasture could interfere with the natural focality of the respective gastrointestinal nematodes.