| [forming of gastro-intestinal nematodes fauna of free ranging european bison in bialowieza primeval forest during last 17 years (1984-2001)]. | 28 european bison of both sexes and in different age shot in białowieza primeval forest in january 1984, (10 animals), january 1992 (10 animals) and in january and the beginning of february 2001 (8 animals) have been necropsied. the examined animals in mentioned years were of similar age. there were examined abomasa and duodena of shot animals. all necropsied bison were infected with gastro-intestinal nematodes. the highest intensity of infection with nematodes of abomasum was found in 1992 year ... | 2002 | 16894720 |