protozoa exam 3

Question 1

what is the transmission of apicomplexa

Answer 1

infective stage is sporuylated oocysts in the feces.

Question 2

where does sporogony occur in eimeria?

Answer 2

in the feces outside of the host. not immediately infective

Question 3

who gets eimeria?

Answer 3

poultry and ruminant coccidia. GI issues.

Question 4

what is the pathogenesis of coccidiosis (eimeria and cystiospora)

Answer 4

disease is caused by the destruction of cells after schizogony when the meriozoites emerge and rupture the cells. reoccuring step that can cause severe damage.

Question 5

Eimeria and cystisospora. life cycle? direct? indirect?

Answer 5

direct for both. but cysti can have a paratenic host of a rodent.

Question 6

what is the diagnostic stage of coccidosis (GI)

Answer 6

fecal float. need to see oocysts.

Question 7

what is a tell-tale sign of coccidosis (eimeria or cystisospora)

Answer 7

stained perianal area from feces with diarrhea.

Question 8

what is the domestic host of toxoplasma gondii? what other species is affected?

Answer 8

cats are the DH. they cause abortion in sheep and goat.

Question 9

which lifestages are infective in t. gondii? which is the best in terms of pathogenicity?

Answer 9

sporyulated oocysts, brady and tachyziotes. ingested encysted bradyziotes from mice are the most pathogenic and cause the infection most commonly in cats

Question 10

which stage of toxoplasma gondii is the pathogenic stage?

Answer 10

tachyziotes.

Question 11

Neospora caninum what animals does it affect?

Answer 11

DH is a dog. but cows and some sheep can get it and it will abort fetuses.

Question 12

scarcocystis neurona. what does it cause?

Answer 12

equine protozoal myelencephalitits

Question 13

what is the DH and IH in sarcocystis neurona.

Answer 13

opossum. IH- skunk raccoon, armadillo

Question 14

where does sporogony occur in sarcocystis? (EPM)

Answer 14

in host. feces immediately infective

Question 15

type of lifecycle of sarcocystis?

Answer 15

indirect. carnivore DH and prey IH

Question 16

what life cycle is Toxoplasma

Answer 16

it can be direct, ingestion of sporoulyated oocysts or it can be indirect, ingestion of zoites from rodents

Question 17

what are the domestic tick borne protozoa?

Answer 17

babesia canis (dog- anemia) and cytauxzoon felis (anemia cat).

Question 18

cryptosporidium is intracellular but _______

Answer 18

extracytoplasmic

Question 19

what causing self limiting neonatal diarrhea in calves

Answer 19

cryptosporidium

Question 20

which tick borne protozoa is eradicated from the US

Answer 20

babesia in cattle

Question 21

giardia duodenalis. what is the pathogenic stage?

Answer 21

trohpoziote. sucks and damages mucosa

Question 22

how to diagnose giardia?

Answer 22

fecal smear. have to find cysts and also have diarrhea

Question 23

which flagellated protozoa are zoonotic

Answer 23

giardia (technically), leishmania, t. cruzi

Question 24

tritrichomonas foetus. what does it cause and how do you treat it?

Answer 24

causes early embryonic death, high rate of open cattle, infertility. cull the bulls and give sexual rest to the cows. STP

Question 25

chronic large bowel in cats that is self limiting

Answer 25

T. blagburni

Question 26

T. gallinae presents with what symptoms?

Answer 26

Upper respiratory issues and crop issues

Question 27

where do you find the t. cruzi trypomastigote and amastigote

Answer 27

trypomastigote is extracellular swimming and the amastigote is inside cells with no flagella.

Question 28

how is t. cruzi transmitted

Answer 28

fecal material from kissing bug enters opening on animal. ingestion of the bug. vertical transmission

Question 29

what cells do leishmania bother

Answer 29

monocytes in humans and canines

Question 30

what is the transmission of leishmania? in the us?

Answer 30

biting of the sand fly. in the us, vertical transmission through fox hound bloodlines, and fighting animals.

Question 31

transmission route for cryptosporidium?

Answer 31

oral