Fresh water snails, Semisulcospira libertina, including S reiniana and S. japonica, are known as the first intermediate hosts of pathogenic trematodes, e. g. Paragonimus, Metagonimus, etc. These snails are also infected with many other non-pathogenic cercariae, the majority of which have been described up to now incompletely. Therefore, in the case of epidemiological studies, research workers u...

Intertidal snail-trematode communities in southern Thailand were examined before and after the South Asia tsunami. Infection rates and species diversity of cercaria in the host snail Cerithidea in tidal zones did not change significantly from one year before to one month after the tsunami. However, the host snails C. quadrata, C. alata and C. obtusa disappeared from greatly damaged sites. It is...

Descriptions of the miracidium, mother redia, daughter redia, grandaughter redia, cercaria, metacercaria and adult stages of Philophthalmus gralli Mathis and Leger, 1910 recovered from experimental infections are presented. The intermediate host, Melanoides tuberculata, was collected from freshwater rivulets in Aguasanta and Yaguracual, Sucre State, Venezuela. Chicken were orally infected with ...

D icrocoelium dendriticum is the most widespread liver fluke in cattle and sheep in Italy [1]. Adult forms live in the gall bladder and bile ducts of their final hosts (ruminants). Eggs are passed in faeces and ingested by land snails which excrete cercaria in mucous balls, which are eaten by ants. Infestation usually occurs by ingestion of ants that carry metacercariae by animals and occasiona...