09 - Cryptosporidium & Sarcocystis Flashcards
1
Q
(Cryptosporidia)
(Cryptosporidium SPecies)
- parasitize what?
- what kind of parasites are they (monoxenous or poly)?
- where located?
A
- vertebrates
- monoxenous
- epicellular (live in close proximity but not inside cell)
2
Q
A
notice yellow text for the exceptions
3
Q
A
4
Q
(Cryptospordidum spp.)
(there are 4 species he wants us to know… esp the 1st one)
(name each type)
- (oocysts 4-5 mM)
infects all mammals
epithelial cells of the intestinal tract (bile ducts)
- (oocysts 8-10 mM)
- infections in cattle and mice (chronic: no symptoms)
- epithelial cells of the digestive glands (abomasum) - infects chickens, epithelial cells of the lungs and intestinal tract
- infects turkeys, epithelial cells of the lungs
A
- parvum
- muris
- baileyi
- meleagridis
(only one we are going to worry about is parvum - so don’t worr about the others)
5
Q
- completion of the life cycle results in the production of what?
- oocysts are shed in the feces fully what?
- oocyts contain how many naked sporozoites?
any sporocysts?
A
- oocysts
- sporulate
- 4
no
6
Q
(Cryptosporidium)
(Transmission)
(fecal/oral route)
- ingestion of what?
- aspiration of what?
- are oocysts environmentally stable?
A
- oocysts
- ooctyst
- yes (>6 months under ideal conditions)
7
Q
(Cryptosporidium)
(Transmission)
A
8
Q
these are rhetorical
A
9
Q
(Cryptosporidium: Cattle)
- typically what age?
- infection lasts how long?
- develop long lasting immunity
A
- 1-3 weeks of age (older calves more likely Eimeria)
- 5 to 10 days (self-limiting in immunocompetent animals)
10
Q
A
11
Q
A
12
Q
A
13
Q
A
14
Q
A
15
Q
A
16
Q
A
17
Q
A
18
Q
(Sarcocystsis)
- What is the definitive host?
- What is the intermediate host?
A
- predator (sexual stages/oocysts (sporocytes) are shed in the feces)
- prey
(herbivorous, issue cysts, muscle cysts (sarcocysts))
this cycle is slightly different
