Biology 625
Supplemental visual material

Echinococcus granulosus (Cyclophyllidea)

entire adult worm
scolex showing hooks
hydatid brood capsule with protoscolices
Definitive hosts: carnivores, especially canids but also felids
Site of infection: small intestine
Typical size: 5-6 mm in length
Distribution: cosmopolitan
Intermediate hosts: a wide range of mammals may be employed, including humans, which harbor unilocular hydatid cysts containing thousands of protoscolices


Originals; photographs by S.J. Upton

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Kansas State University | Biology Division