Species which are pathogenic to dogs include:
- Haplorchis pumilio
- Haqplorchis taichui
- Haplorchis yokogawai
The life cycle of this parasite includes snails as first intermediate snail hosts and fish as second intermediate host. Dogs become infected from drinking contaminated water sources or eating raw or poorly cooked fish that contain encysted metacercariae.
In dogs, the adult fluke normally reside in the lower jejunum, where it shed eggs that are passed in the feces.
Diagnosis is based on coprological identification of eggs, although ELISA tests are available for experimental purposes.
Treatment of this parasite in dogs is relatively effective with praziquantel.
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