Biology 625
Supplemental visual material

Fasciola hepatica (Sheep liver fluke)

Definitive hosts: this species infects a variety of mammals, especially ruminants
Site of infection: bile ducts and gall bladder
Typical size: 15-30 mm in length
Distribution: Worldwide
Intermediate host: several species of lymnaeid snails serve as suitable hosts, including Pseudosuccinea columella and Fossaria bulimoides in Kansas. One sporocyst and two redial generations occur.
Metacercariae: encystment on a variety of aquatic vegetation


Originals; all photographs by S.J. Upton

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Kansas State University | Biology Division