Zarazenie jeleni niecieniami plucnymi w polskiej i bialoruskiej czesci Puszczy Bialowieskiej

Fecal samples from red deer from polish and belorussian parts of Białowieża Forest were examined by Baermann method. First stage larvae of three species of lung nematodes were found. In polish part in 100% of samples were larvae of E. cervi, in 50% V. sagittatus and in 21% D. noemeri, and in belorussian the level of infection was lower and larvae were in 92%, 36% and 12% of samples respectively. In significant part of samples were met mixtured invasion of two or three species. Finding of larvae of E. cervi is the first registration of this species in belorussian part of Białowieża Forest, and V. sagittatus is a new species for the fauna of Byelorussia. Ncmatodes E. cervi are dangerous for domestic ruminants.