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Parasitology quiz 2 > protista 4 > Flashcards

protista 4 Flashcards

1
Q

toxoplasma taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
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2
Q

toxoplasma life cycle

A

facultative heteroxenous life cycle (can be single host or multiple)

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3
Q

toxoplasma gondii intermediate host

A
  • birds
  • rodents
  • pigs
  • sheep
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4
Q

toxoplasma gondii final host

A
  • cat

- human

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5
Q

toxoplasma gondii life cycle

A
  • Unsporulated oocysts shed in cat feces -> Sporulate in environ & become infective -> Intermediate hosts (birds, rodents) ingest contaminated soil, water, plants -> Transform into tachyzoites after ingestion -> Become tissue cyst bradyzoites in neural & muscle tissue -> Cats ingest intermediate hosts and get infected or can also get infected by directly ingesting oocysts from environ
  • Pigs & sheep can also ingest cysts in environ then infect ppl
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6
Q

toxoplasma gondii transmission cat

A

Oocysts shed in feces of cats that can cause enteric infection & oocyst production in other cats or infect other vertebrates causing visceral infection w/ small cysts

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7
Q

toxoplasma gondii transmission from environment/ medical

A
  • Ppl can ingest oocysts from soil, vegetables, undercooked meat, blood transfusion & transplants
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8
Q

toxoplasma gondii transmission pregnancy

A
  • Mothers only transmit to fetus if being infected for very first time while pregnant
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9
Q

toxoplasma gondii can be transmitted in what ways broadly

A
  • cat -> cat/ other vertebrate
  • oocysts in soil/ veggies/ undercooked meat/ blood transfusion and transplants -> ppl
  • pregnant mother -> fetus
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10
Q

toxoplasma gondii organ effected

A

-neuro and muscle cysts

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11
Q

toxoplasma gondii organ effected ppl

A
  • tissue cysts in skeletal muscle, myocardium, brain, eyes
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12
Q

toxoplasma gondii dx newborn

A

Severe disease to newborn infants infected in utero (miscarriage, hydro-cephalus, blindness, mental disability)

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13
Q

toxoplasma gondii chronic infection

A
  • Chronic infection w/ bradyzoites (asymp-tomatic)
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14
Q

toxoplasma gondii acute dx

A
  • Acute disease w/ multiple tachyzoites after first exposure (flu like symptoms)
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15
Q

toxoplasma gondii re-crudence

A
  • Re- crudescence (reactivation of bradyzoites into tachyzoites )
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16
Q

toxoplasma gondii dx general

A
  • severe dx to newborn
  • chronic infection
  • acute dx
  • re-crudescence
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17
Q

toxoplasma gondii location

A

everywhere there are cats

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18
Q

toxoplasma gondii infection and timing of pregnancy

A

transmission to fetus less common when infection occurs early in pregnancy but damage to fetus is greater the earlier in pregnancy It occurs

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19
Q

toxoplasma gondii frequency of spread from mother to fetus

A
  • just as common as his, cystic fibrosis, ect from mom to fetus
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20
Q

Neospora taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
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21
Q

toxoplasma gondii taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
22
Q

neospora caninum taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
23
Q

neospora caninum final hosts

A

dogs/ other canids

24
Q

neospora caninum intermediate host

A

cattle

25
Q

neospora canunum final and intermediate host in the wild

A

coyotes are final host and deer are intermediate host in wild

26
Q

neospora caninum transmission

A

dogs ingest tissue cysts in beef then pass oocyts in their feces

27
Q

neospora caninum dx

A
  • abortion in cattle
  • if not aborition chronically infected calf that can then pass dx when they’re pregnant
  • neuro dx in dogs (posterior flaccid paralysis in puppies)
28
Q

neospora caninum tx

A

clindamycin helps w/ clinical signs but does not get rid of parasite in dogs

29
Q

neospora hughesi taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
30
Q

neospora hughesi host

A

horse

31
Q

hepatozoon taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
32
Q

hepatozoon lifecycle

A
  • sexual replication in gut of tick -> production of oocyts with infective sporozoites
  • dogs infected by ingesting tick or eating paratenic host
33
Q

hepatozoon transmission

A

tick infected by taking blood meal that has neuts and monocytes harboring parasitic gamonts

34
Q

hepatozoon dx

A

dogs have schizonts in various tissues then gamonts finally go to wbcs

35
Q

hepatozoon canis taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
36
Q

hepatozoon canis intermediate host

A

dogs

37
Q

hepatozoon canis final host

A

rhipicephalus sanguines (brown dog tick) final host

38
Q

hepatozoon canis life cycle

A

Tick ingests leukocytes containing gamonts -> Sexual repro, zygotic meiosis, sporogony in tick -> Intermediate hosts (dogs) ingest ticks -> Oocysts rupture, release sporocysts that excyst in presence of bile, releasing infectious sporozoites -> Invade host cells

39
Q

hepatozoon canis organ effected

A

subclinical infections, gammons usually found in peripheral blood

40
Q

hepatozoon canis location

A

worldwide

41
Q

hepatozoon canis meronts

A

seen in mult organs of body not seen in dogs in us

42
Q

hepatozoon americanum taxonomy

A 
kingdom- protistis
class- sar- eukaryotes
order- alveolata
family- apicomplexa
group- conoidasida
43
Q

hepatozoon americanum final host

A

amblyomma maculate (gulf coast tick)

44
Q

hepatozoon americanum intermediate hosts

A

dogs

45
Q

hepatozoon americanum paratenic hosts

A

rodens w/ cystozoites

46
Q

hepatozoon americanum reserviours

A

coyotes

47
Q

hepatozoon americanum life cycle

A

-> Merogony (asexual multiplication) -> Meronts mature, rupture, give rise to gamonts that circulate in blood -> Ingested by ticks

48
Q

hepatozoon americanum alt pathway to ingestion

A
  • Paratenic host can instead ingest the tick then dogs eat the paratenic host
49
Q

hepatozoon americanum dx

A
  • severe dx in dogs
  • marked neutrophilic leukocytosis, significant joint pain from periosteal proliferation
  • sometimes hurts so much they don’t eat and die of starvation
50
Q

hepatozoon americanum location

A

united states

51
Q

hepatozoon americanum necropsy

A

onion skin schizonts when examine muscle tissue on necropsy

52
Q

hepatozoon americanum txs

A

no effective treatments but anti-parasitics should be used

Parasitology quiz 2 (7 decks)

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