Centrocestus spp

From Dog
Centrocestus armatus metacercariae[1]

Centrocestus spp are a parasitic trematode of dogs throughout South-east Asia[2].

Species which are pathogenic to dogs include:

  • Centrocestus formosanus[3]
  • Centrocestus armatus

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 or poultry[4] that contain encysted metacercariae[5].

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[6].

Co-infection with other intestinal flukes such as Haplorchis pumilio, Acanthotrema felis, Stellantchasmus spp and Stictodora fascatum is common.

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


  1. Sohn WM (2009) Fish-borne zoonotic trematode metacercariae in the Republic of Korea. Korean J Parasitol 47:S103-S113
  2. Nguyen TL et al (2009) Prevalence and risks for fish-borne zoonotic trematode infections in domestic animals in a highly endemic area of North Vietnam. Acta Trop 112(2):198-203
  3. Pinto HA & Melo AL (2012) Metacercariae of Centrocestus formosanus (Trematoda: Heterophyidae) in Australoheros facetus (Pisces: Cichlidae) in Brazil. Rev Bras Parasitol Vet 21(3):334-337
  4. Anh NT et al (2010) Poultry as reservoir hosts for fish-borne zoonotic trematodes in Vietnamese fish farms. Vet Parasitol 169(3-4):391-394
  5. Chai JY & Lee SH (2002) Food-borne intestinal trematode infections in the Republic of Korea. Parasitol Int 51(2):129-154
  6. El-Seify MA et al (2012) ELISA and some biochemical tests of heterophyidae infection in laboratory animals. Parasitol Res 110(2):679-687