Abstract
Research concerning the elk lungworm, Dictyocaulus sp., was continued in the spring (late May-early June), summer (July), and fall (October) of 1971. A higher incidence of lungworm-positive elk was noted in these data (40% spring and 47% summer, see Fig 1) than in those data of past years. Fall necropsy data were limited to lungs from Refuge hunter kills in mid-October. Seventy per cent of those lungs were positive for Dictyocaulus sp. adults. A 12% incidence was found in Big Game Ridge elk in mid-July. Project Number 156.