| distribution and ecology of meningeal worm, parelaphostrongylus tenuis (nematoda), in northcentral north america. | meningeal worm (parelaphostrongylus tenuis), a common nematode parasite in white-tailed deer (odocoileus virginianus) and pathogenic for several species of ungulates in eastern north america, is not known to occur in the west. heads of 1,902 white-tailed deer were examined for adult meningeal worm to determine geographic distribution of the parasite in saskatchewan and manitoba (canada) and north dakota (usa). finding the parasite in a deer in eastern saskatchewan near the manitoba border establ ... | 2003 | 12910761 |