Ecological and parasitological characteristics of the “Fasciola hepatica L.–Lymnaea (Galba) subangulata” system

Background. Fasciolosis is one of the most common zoonoses in world, caused by trematode Fasciola hepatica L. This helminthiasis leads to significant economic damage animal husbandry and can pose a direct threat human health. Today, context climate change, detailed knowledge biological characte­ristics F. circulation will make it possible predict outbreaks fasciolosis on farms detail plan effective measures combat this dangerous disease. The purpose work clarify some aspects biology within Berdychiv district belonging forest-steppe zone Zhytomyr region. Material Methods. was carried out during 2020–2021. Collections mollusks from water bodieson territory Berdichevsky region served as material for research. Their identification conchological features. Conventional methods were used parasitological study mollusks. In total, more than 2000 Lymnaea (Galba) spp. examined. Sampling four pasture reservoirs. Results. main intermediate host mollusk (G.) subangulata region; truncatulaplays secondary role distribution trematode. It noted that carriers partenites are mainly with shell height 4.0 8.2 mm. New data dynamics infection obtained. infestation these cercariae shows stable uniform character form two-peak curve, peaks May (2.51 ± 0.88 %) August (9.19 1.78 %). overall prevalence invasion fasciola studied bodies 2020 significantly lower 2021. Conclusions. modern climatic conditions, region, permanent have become foci places settlement subangulata, infected cercariae. favorable environmental conditions its hosts develop spring; accordingly; definitive hosts, period quite terms animals.