Final Hosts of Fascioloides magna

  • Ivica Králová-HromadováEmail author
  • Ludmila Juhásová
  • Eva Bazsalovicsová
Part of the SpringerBriefs in Animal Sciences book series (BRIEFSANIMAL)


Fascioloides magna parasitizes in a broad spectrum of final hosts, mainly free living and domestic ruminants. Final hosts of giant liver fluke are divided into three types (definitive, dead-end and aberrant) according to interrelationships between the parasite and the host, the ability of fluke to reach maturity and produce eggs, pathological changes within the host organism, and the potential to release eggs of F. magna into external environment. Definitive hosts contribute significantly to further spread of propagative stages of F. magna into the environment. Mature flukes localized in thin-walled pseudocysts or fibrous capsules in the liver parenchyma can produce eggs and release them into the host’s small intestine through the bile system. Definitive hosts tolerate fascioloidosis rather well, and infection is very often subclinical. In dead-end hosts, giant liver fluke can reach the liver but parasite matures very rarely. Only few eggs are produced and they are not released into the bile system. In aberrant hosts, giant liver fluke can not successfully complete the migration; parasite may occasionaly move up to the liver but formation of pseudocysts is not successful. Such hosts may often die due to tissue damage, which is associated with migration of immature flukes through peritoneal, thoracic or abdominal cavities.


Giant liver fluke Final host Definitive host Dead-end host Aberrant host Host-parasite interrelationship Experimental infection Natural infection 


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Authors and Affiliations

  • Ivica Králová-Hromadová
    • 1
    Email author
  • Ludmila Juhásová
    • 1
  • Eva Bazsalovicsová
    • 1
  1. 1.Institute of ParasitologySlovak Academy of SciencesKošiceSlovakia

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