Dr. Holló Ferenc szerk.: Parasitologia Hungarica 3. (Budapest, 1970)
kony törzsek") fiatal korban különösebb nehézség nélkül fertőzhetik a közönséges májmétely miracidiumaival. Ezekből a csigákból a megszokott időben életképes cercariák rajzanak ki. Terepen azonban még súlyos fasciolosis-endemia esetén is csak elvétve találtak fertőzött L. turrieula-példáhyokat. E fajt a E. hepatica potenciális köztigazdájának tekintik, amely minden jel szerint hazánkban nem sok szerepet játszik a fasciolosis terjesztésében. Magyarországon eddig nem találtak olyan lymnaea stagnalis- és L. peregra-egyedeket, amelyekben, vagy ezek laboratóriumban felnevelt utódaiban, a E. hepatica cercariái kialakultak volna. According to the authors' observations, under Hungarian conditions, only Lymnaea truncatula has a significant role in spreading fasciolosis. It has to be emphasised, however, that snails originating from different biotopes (irrespective of their age) are not equally „suitable" for miracidia to invade. If however invasion does occur parthenogony is soon arrested. Some strains of truncatula are too sensitive. The miracidia, having invaded them easily, commence rapid parthenogony, which kills a considerable number of the snails. According to laboratory experiments Lymnaea occulta (Jack.) is an obligatory intermediate host of E. hepatica . This snail species has not yet been found in Hungary. The snails used in the experiments were obtained from Poland. Under laboratory conditions the individuals originating from certain populations of the species called Lymnaea turricula („sensitive strains") can easily be invaded by miracidia of E. he patica at an early age.After a certain time viable cercariae swarm out from these snails. In the field infected L. turri cula individuals could be found only rarely, even in areas with serious endémies of fasciolosis. This species can be considered as a potential intermediate host of F. hepatica which, according to the authors' observations, does not play an important role in spreading fasciolosis in Hungary. Autoref . (Department of Parasitology, Univ. of Vet. Sei., Budapest VII., Landler J. u. 2. )
