Metagonimus spp

From Dog
Adult Metagonimus intestinal fluke[1]

Heterophyes spp are a non-pathogenic intestinal fluke parasite of dogs.

Pathogenic species in dogs include:

  • Metagonimus yokogawai[2]

The life cycle of this parasite includes snails as first intermediate hosts and fish (usually mullets; Mugil cephalus) as second intermediate host. Dogs become infected from eating fish that contain encysted metacercariae[3].

Diagnosis is based on coprological identification of Metagonimus eggs, although ELISA tests are available for experimental purposes[4].

Treatment of this parasite in dogs is relatively effective with praziquantel.


  1. Kansas State University
  2. Wang CR et al (2006) Prevalence of helminthes in adult dogs in Heilongjiang Province, the People's Republic of China. Parasitol Res 99(5):627-630
  3. Yamamoto N et al (2009) Prevalence of intestinal canine and feline parasites in Saitama Prefecture, Japan. Kansenshogaku Zasshi 83(3):223-228
  4. El-Seify MA et al (2012) ELISA and some biochemical tests of heterophyidae infection in laboratory animals. Parasitol Res 110(2):679-687