Species which are pathogenic to dogs include:
- Stellantchasmus falcatus
The life cycle of this parasite includes snails as first intermediate snail hosts and brackish water fish (e.g. grey mullet) as second intermediate host. Dogs become infected from drinking contaminated water sources or eating raw or poorly cooked fish that contain encysted metacercariae.
Stellantchasmus falcatus has an endosymbiontic proteobacteria Ehrlichia spp in its gut and dogs consuming fish infected with heavy burdens of this parasite may succumb to symptoms similar to salmon fish poisoning associated with the fluke Nanophyetus spp.
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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