Fluke: Paramphistomatidae Flashcards
1
Q
What is the final host?
A
Ruminants
2
Q
Where in the final host do the fluke locate?
A
Rumen
3
Q
What is the intermediate host?
A
Aquatic snail
4
Q
Describe the life cycle of the rumen fluke
A
- Fasciola infect snails and remain within them for 4 weeks
- Metacercaria are shed from snail and ingested by ruminants
- Juveniles excyst in the duodenum and attach to the intestinal wall where they remain and feed for 6 weeks
- Adults migrate to the forestomachs where they lay eggs that are then excreted in faeces
5
Q
What is the prepatent period?
A
7-10 weeks`
6
Q
Describe the pathogenesis
A
Juveniles cause disease. Attachment to duodenal mucosa causes necrosis, haemorrhage, erosion of mucosa.
Results in gastroenteritis, oedema, haemorrhage and ulceration.
7
Q
List 5 clinical signs of rumen fluke
A
- Foetid diarrhoea
- Anaemia, hypoalbuminaemia
- Intense thirst, annorexia
- High mortality
- Damaged intestine may be shed with juveniles still attached
8
Q
How is it diagnosed?
A
PM
9
Q
How can it be treated?
A
Oxyxlozanide
