13 - Acanthocephala and Liver Flashcards



we went through before I guess - should probably know this pretty well

figure this out using prior slide I guess

(Liver fluckes)
(give normal names)
1-3. in picture
- dicrocoelium dendriticum

- common liver fluke
- giant liver fluke
- large american liver fluke
- lancet fluke

(Fasciola Hapatica)
- cause of what?
- world, most of US - in minnesota?
- DH?
- IH
- liver fluke disease, liver rot or hepatic distomiasis
- no
- sheep, cattle, llamas (human)
- amphibious, right handed snails (Lymnae)



(Life Cycle of Fasciola Hepatica)
- IH - only in what?
- the snail



(Fasciola Hepatica)
(life history)
(juvenile fluke)
- penetrates what?
- migrates to the liver via what?
- then penetrates what?
- intestinal wall
- peritoneal cavity
- liver capsule
(Fasciola Hepatica)
- migrates in hepatic parenchyma for how long?
- enters what to mature in a few weeks?


(Fasciola Hepatica)
(Acute or Chronic)
(Pathogenesis - Acute)
- migration of what where?
- depends on what?
- juvenile flukes in the liver parnchyma
- how many flukes were ingested

(Fasciola Hepatica)
(Acute or Chronic)
(Pathogenesis - Chronic)
- adults where? do what?
- then tell me all the other stuff that happens
- adults in biliary ducts - feed on lining



(Fasciola Hepatica)
(Clinical signs)
- if get enough necrosis can get what?
- then open to what?
- black disease
- clostridium novyi

fluke eggs don’t float…. that’s what they usually do - so they use sedimentation
- What’s the best way to identify fluke eggs on a fecal?

- FLUKE FINDER


(Fascioloides Magna)
- aka?
- causes what?
- DH?
- IH?
- Accidnetal hosts?
- large north american liver fluke
- fascioloidasis
- white tailed deer
- lymnaea, Stagnicola
- sheep, cattle, llama, moose, elk





- can flukes mature in sheep and goats?
- what are required to complete life cycle?

- no
- snails
(Fascioloides Magna)
(Pathogenesis)
- asymptomatic with up to how many flukes?

- 50
(Fascioloides Magna)
(Pathogenesis)
(Cattle, Pigs, Moose)
- flukes, form cysts with a thick wall
- do flukes reach sexual maturity?
- do cysts communicate with bile duct?
- are eggs found in feces?
- can they cause disease?
- they may
- no
- no
- only heavy infections
(look at pic)
- do flukes mature?
- eventually cause what?
- how many flukes to cause death?
- most deaths when?

- no - they continue to migrate
- death of the host
- can be a single one (through major blood vessel)
- winter


(Dicrocoelium Dendriticu)
- aka what?
- DH?
- IH?
- lancet fluke
- ruminants
- 1st a land snail = Cionella
2nd an ant = formica
ants love the slime balls


