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UI 607 Parasitology > Midterm > Flashcards

Midterm Flashcards

(104 cards)

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1
Q

What parasite causes Chaga’s dz?

A

Trypanasome cruzi

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2
Q

What is the IH of T. cruzi?

A

kissing bug

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3
Q

What are the CS of acute infection with T. cruzi?

A

fever, edema, lymphadenopathy, romanas sign

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4
Q

What is the main CS of chronic infection with T. cruzi?

A

cardiomegaly

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5
Q

How is T. cruzi diagnosed? (2)

A

stained blood smears, serological testing

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6
Q

What causes Nagana dz in cattle?

A

african trypanosomiasis

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7
Q

What is the IH of afican trypanasomes?

A

tsetse fly

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8
Q

What are the 2 ways to diagnose african trypanasomes?

A

blood smears, in CSF during neurological stage

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9
Q

What does Trypanosoma equiperdum cause?

A

equine syphilis

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10
Q

Which Trypanasome has no IH?

A

T. equiperdum

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11
Q

How is leishmania transmitted?

A

sand flies

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12
Q

Where does leishmania recide in vertebrate hosts?

A

obligate intracellular parasites of macrophages (TQ)

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13
Q

What form of leishmania gives dogs long nails and patchy alopecia?

A

visceral leishmania

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14
Q

What are the main CS of giardia spp?

A

geasy poop, maldigestion

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15
Q

What kind of life cycle is giardia?

A

direct - ingestion of cysts

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16
Q

How is giardia diagnosed?

A

znso4 fecal float

ELISA tests

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17
Q

What kind of parasite is coccidia?

A

obligate intracellular protozoa

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18
Q

What is the difference in appearance of eimeria and isospora?

A

eimeria - 4 sporocysts, each has 2 sporozoites

isospora - 2 sporocysts, each has 4 sporozoites

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19
Q

When does eimeria occur most often in calves?

A

3 weeks to 6 months of age

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20
Q

When does isospora occur most often in piglets?

A

5 to 15 day old piglets

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21
Q

What is the tx of choice for coccidia in dogs and cats?

A

ponazuril

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22
Q

What lifecycles of toxoplasma gondii are in felids?

A

asexual and sexual reproduction

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23
Q

How is toxoplasma gondii spread?

A

ingestion of oocysts of raw meat containing zoites

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24
Q

What protozoan is the leading cause of abortion in cattle?

A

neospora

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25
How is cytauxzoon felis transmitted?
by ticks
26
How can dogs become infected with Hepatozoon americanum?
ingesting tick containing sporulated oocysts
27
Where is the amoeba, Naeglaria found?
freshwater lakes or ponds
28
Who is the DH for neospora? How is it transmitted?
dogs | transplacentally
29
What are the CS of neospora in puppies?
ascending paralysis
30
Who are the IH and DH of sarcocystis spp?
DH - predator | IH - prey
31
What is the cause of EPM in horses?
Sarcocystis neurona
32
What is the DH of sarcocystis neurona?
possums
33
What are the CS of EPM?
assymetrical neurological signs
34
Where does crypto like to live in the host?
microvillus border
35
How can crypto re infect host?
thin walled cyst ruptures
36
What is the time frame and CS of crypto in calves?
caramel diarrhea, 1-2 weeks old
37
What are the two etiological agents of "Black dz" in sheep?
Fasciola hepatica and clostridium novyi
38
Where does fasciola hepatica live?
bile duct
39
What is the pathology of Fasciloides magna in sheep?
destroys liver paranchyma (cant find bile duct)
40
What is the IH of Fasciola hepatica and Fasciloides magna?
snail
41
What parasite uses both ants and snails as IH?
Dicrocylium dendriticum
42
What is the brain eating amoeba that has no treatment?
Naeglaria
43
What is the cause of salmon poisoning in dogs?
Neorickettsia bacteria (from trematode nanophyteus salmincola)
44
What is the 1st and 2nd IH of Paragonimus kellicotti?
1st - snail | 2nd - crayfish
45
What will be seen on radiographs of lungs with dogs or cats infected with lung fluke (paragonimus kellicotti)?
chain link fence appearance
46
What is the IH and DH of Tania saginata?
IH - cattle | DH - people
47
What is the DH and IH of Tania solia?
DH - man | IH - swine or man
48
What happens when man is the IH of Tania solia?
neurocysticercosus
49
What two species of tapeworm have dog as DH and rabbit as IH?
Tania pisiformis | Multiceps serialis
50
What is the DH and IH of Tania taniaformis?
DH - cat | IH - mouse
51
What tapeworm can cause exopthalmus in rabbits?
Multiceps serialis
52
What two tapeworms have dog as DH and sheep as IH?
Multiceps multiceps | Echinococcus granulosus
53
Which tapeworm has a larval form that is a coenurus and has multiple scolex in the wall?
Multiceps multiceps
54
What genus of tapeworm causes hydatid cysts in animals and humans?
Echinococcus
55
Which tapeworm causes hydatid cysts that act like metastatic cancer?
Echinococcus multilocularis
56
What is the DH and IH of Echinococcus multilocularis?
DH - Fox, dog, | IH - rodent, human
57
What are the DH and IH of Diplydium spp?
DH - dogs, cats, humans | IH - fleas or lice
58
What is the head called in the family Pseudophyllidea?
bothria
59
What 2 genus are in the Pseudophyllidea family of tapeworms?
Spirometra and Dyphilobothrium
60
What is the 1st and 2nd IH, and DH for Spirometra spp.?
first IH - copepod 2nd IH - frogs, people DH - dogs, cats
61
What is the 1st, 2nd IH and DH for Dyphilobothrium?
1st IH - copepod 2nd IH - salmonids DH - dogs, cats
62
What is the IH for the stomach worm (physoloptera)?
beetles or crickets
63
What is the DH for physoloptera?
dogs, cats, possums
64
What are the three species of physaloptera that occur in the stomach of cats and dogs?
P. rara P. felidis P. praeputialis
65
When do toxacara eggs become infective in the feces?
2-3 weeks
66
What are the 4 way of transmission of Toxacara canis?
transplacentally fecal - oral transmammary transport host
67
What can Toxacara canis cause in humans?
visceral and ocular larval migrans
68
What is the IH of Spirocerca lupi?
beetles
69
What are the CS of Spirocerca lupi?
all sorts of path - excessive bony growth, cancer
70
Where does S. lupi live in the host?
esophagus
71
What is the IH of Dracunculus?
copepod
72
What is the clinical significance of Dipetalonema reconditum?
confused with microfilaria
73
Where does Dracunculus live and what is the treatment?
skin - surgical removal
74
How is Toxacara cati transmitted?
transmammary
75
What zoonotic disease does T. cati cause?
ocular larva migrans - not common
76
What roundworm infects both dogs and cats?
Toxacara ascaris
77
What is the life cycle and zoonosis for Toxacara ascaris?
doesnt migrate - develops in SI | not zoonotic
78
What is the southern hookworm?
Anclyostoma caninum
79
What is the northern hookworm?
Uncinaria stenocephala
80
What are the CS of hookworm?
pot belly, dull hair coat, vomiting, diarrhea
81
What are the CS of peracute hookworm in puppies?
10-12 day old, black tarry stools, anemia, fecal negative
82
What zoonotic disease does hookworm cause?
cutaneous larval migrans
83
What is the PPP of Trichuris vulpis?
90 days in dogs
84
What is the #1 cause of large bowel diarrhea?
Tricuris vulpis
85
What worm, hook, round, or whip do cats not get?
whipworms
86
What worm causes milk spots in pig liver?
Ascaris suum
87
What parasite causes thin sow syndrome?
Esophogastomum (nodular worm)
88
What is the whipworm of pigs and lives in the cecum?
Trichuris suis
89
What is the IH for Habronema spp?
fly IH
90
What disease can habronema cause in the skin of horses?
summer sores
91
What parasite causes nodules in the stomach of horses?
Draschia
92
What is the most common roundworm found in horses?
Parascaris
93
What parasite resides in the Cr. mesenteric artery of horses?
Strongylus vulgaris
94
What strongly doesnt migrate and has a seasonal life cycle?
Cyasthomes
95
What is the pin worm for horses?
Oxyuris equi
96
What is the horse threadworm and also infects donkeys?
Strongyloides westeri
97
What larval form of heartworm migrates into wound after mosquito bites?
L3
98
When does a heartworm become L5?
70 days
99
What is the PPP from mosquito to microfilaria?
6-7 months
100
What is the IH for moniezia?
orbatid mites
101
What moniezia species infects sheep?
M. expansa
102
Where does anoplocephala magna live in the DH?
upper small intestine
103
Where does Moniezia expansa live in the sheep?
small intestine
104
What anoplocephala tapeworm lives in cattle?
Moniezia benedeni

UI 607 Parasitology (3 decks)

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