SEASONALITY OF RODENT ADIASPOROMYCOSIS IN A LOWLAND FOREST

About 150 rodents were caught in a lowland deciduous forest in South M oravia, Czech Republic, at each of four seasonal intervals (January, A pril, July and October 1990), and their lung tissue was examined micro scopically for the presence of adiaspores of Emmonsia parva var. cresc ens. In the four collection intervals, respectively, the proportions o f infected animals were 44.4%, 50.0%, 25.9% and 22.0% (annual mean 35. 3%) in the bank vole (Clethrionomys glareolus), and 31.9%, 26.9%, 9.6% and 18.5% (annual mean 21.2%) in mice (Apodemus flavicollis, Apodemus sylvaticus). The highest incidence rate (the proportion of new infect ions) of adiasporomycosis was found in the voles in spring, and in win ter for the mice. The different incidence between the voles and mice w as probably attributable to seasonal variation in their edaphic activi ty.