Shedding of gravid proglottids and destrobilation in experimental infections of foxes with Mesocestoides leptothylacus Loos-Frank, 1980 (Cestoda).

The implications of the confused taxonomy of the genus Mesocestoides and the misuse of the name M. lineatus are described. In Southwest Germany rodents are intermediate hosts and red foxes are definitive hosts of M. leptothylacus. The shedding patterns of experimentally infected foxes showed that destrobilation occurs frequently and that there are long periods during which no gravid proglottids are shed at all. Lengths of worms can be taken as a measure of a possible crowding effect only when worms with gravid segments are present, i.e. at the end of the prepatent period (11 to 13 days) or at the beginning of a shedding period.