paramphistomatidosis, dicrocoeliosis, schistomatidosis, alariosis, opisthorchiosis Flashcards
what species can u find rumen fluke?
in grazing domestic and wild ruminants worldwide
veterinary significance rumen fluke
high in tropical and subtropical climate areas
mention some rumen fluke species
- Paramphistomum ichikawai
- P. leydeni
- P. cervi
- Calicophoron ( syn. Paramphistomum daubney)
- C. microbothrioides
- C. microbothrium
mention some predominant rumen flike species in Europe
- Paramphistomum ichikawai
- P. leydeni
- P. cervi
- calicophoron daubneyi
rumen fluke, adults, site, egg
Adults: 6-12 mm long, 2-4 mm wide, pink reddish, conical not flat.
Site: rumen, reticulum
Egg: like F hepatica but colourless, a bit larger and very resistant
rumen fluke cycle
( paramphistomosis)
life cycle : indirect
intermediate host: freshwater or amphibious snail
MI–>SPO–>RE–>CE
infection rumen fluke
( paramphistomosis)
- infected per os
- immatures–> duodenum, abomasum –> rumen, reticulum
rumen fluke ( paramphistomosis)
PP
3-4 months, in lambs 40- 50 days
rumen fluke ( paramphistomosis)
pathogenesis, clinical signs
acute or intestinal paramphistomatidosis: tissue destruction, inflammation, local haemorrhages, necrosis, diahrrhoea, weigh loss.
chronic or rumen paramphistomatidosis: no symptoms
diagnosis and treatment
rumen fluke ( paramphistomosis)
DIAGNOSIS:
acute form:
- no eggs, juvenil flukes in faeces
chronic form:
- faceal egg count, look at the color of egg can be simular to F. hepatica
TREATMENT:
Actue form:
- stop grazing on infected pasture
- niclosamide, albendazole
Chronic form:
- addult flukes are more difficult to remove
- oxyckizanide, closantel
Dicrocoeliosis
Lanceolate fluke disease
small liver fluke
- worldwide in grazing animals, hare, rarely pig, horse, human
- veterinarian significance: moderate
Dicrocoeliosis
Lanceolate fluke disease
small liver fluke
is caused by
- Dicrocoelium dendriticum ( syn D. lanceolatum) lancet or small liver fluke
- Dicrocoelium hospes in tropical regions
Dicrocoeliosis
Lanceolate fluke disease
small liver fluke
adult, site, egg
adult : 8-12 mm, lancet shape,pied, integumentum without spines, brown uterus and white vitellaria,
site: bile ducts, gall blatter
egg: 40-48 um , oval dark brown, thick shelled with operculum, contains miracidium, inside two germinal cells
Dicrocoeliosis
Lanceolate fluke disease
small liver fluke
lifecycle, hosts
lifecycle: indirect
host: 2 intermediate hosts
- terrestrial snails
- ants
MI –> SPO1 –> SPO2 –> CE
(metacaria in ants)
per os infection, rare in humans but can happen
Dicrocoeliosis
Lanceolate fluke disease
small liver fluke
PP
7-9 weeks