In these locations, the mature parasite releases its eggs, which escape the host's body via the feces. The normal habitat of the parasite is biliary ducts and gall bladder of the definite host. Fasciola hepatica has two stages of growing in its life cycle: the sexual stage in its adult form and the asexual in the larval or intermediate stages ( Figure 3). 7.68) may be associated with a failure to thrive.įasciola hepatica is a hermaphrodite and auto-fertilization is achievable, although cross-fertilization between two adult flukes is the most common form of sexual reproduction. 4.20).Įurytrema pancreaticum (16 mm) (Asia and Brazil) (Dicrocoeliidae) (see Fig. These infections may produce anorexia, painful abdominal distension, hepatic fibrosis, and hyperplastic cholangitis.ĭicrocoelium dendriticum (10 mm) (Europe, Asia, Africa, South America) has been introduced into North America, and it occurs in central New York State and the Pacific Northwest it causes chronic hepatic fibrosis (see Fig. magna can be marked in ruminants with large deposits of black “fluke pigment,” often fatal in smaller ruminants. The migratory tracts and lesions produced by F. Fascioloides magna (100 mm) occurs in foci throughout North America remember that the final host is typically the white-tailed deer. Fasciola gigantica (75 mm) is endemic in Hawaii and Africa. Fasciola hepatica (30 mm) is endemic in western and Gulf States of the United States and in Hawaii, Puerto Rico, British Columbia, and eastern provinces of Canada. gigantica, and Fascioloides magna (Fasciolidae) ( Fig. Araceli Lucio-Forster, Manigandan Lejeune, in Georgis' Parasitology for Veterinarians (Eleventh Edition), 2021 Trematodes.įasciola hepatica, F.
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