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  11. Distribution Of Pseudocysts In Fascioloides Magna Infected Livers Of Red Deer And Fallow Deer

Distribution of pseudocysts in Fascioloides magna infected livers of red deer and fallow deer

D Konjević1, P Verzak2, K Jerabek3

  • 1University of Zagreb, Faculty of Veterinary Medicine, Heinzelova 55, 10000 Zagreb, Croatia.

Helminthologia
|October 8, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

The middle section of deer livers is the most common site for Fascioloides magna pseudocysts. This parasite distribution in red deer and fallow deer livers was consistent across infections.

Area of Science:

  • Veterinary Parasitology
  • Wildlife Health
  • Helminthology

Background:

  • Fascioloides magna is a non-native liver fluke impacting European deer populations.
  • Juvenile flukes migrate through the abdominal cavity to establish in the liver.
  • Understanding parasite distribution is crucial for disease management in wildlife.

Purpose of the Study:

  • To map the distribution of Fascioloides magna pseudocysts within red deer and fallow deer livers.
  • To determine if pseudocyst distribution varies by host species (red deer vs. fallow deer).
  • To investigate the influence of infection severity on pseudocyst localization.

Main Methods:

  • Analysis of 143 red deer and 178 fallow deer livers.
  • Division of each liver into three sections: left, middle, and right.
Keywords:
Fascioloides magnafallow deerpseudocyst localizationred deer

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  • Slicing liver sections to 2 cm thickness for pseudocyst analysis.

    • Main Results:

    • A significantly higher number of pseudocysts were found in the middle liver section compared to left or right sections for both species.
    • Red deer livers generally contained more pseudocysts than fallow deer livers across all sections.
    • The middle section showed a 7-10 times higher probability of pseudocyst presence compared to the left or right sections, depending on the host species.

    Conclusions:

    • The middle liver section is the preferred site for Fascioloides magna pseudocyst localization in both red and fallow deer.
    • Abundance of blood vessels and bile duct terminations likely influences this preference.
    • No correlation was observed between infection severity and pseudocyst distribution patterns.