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UI 607 Parasitology > Midterm > Flashcards

Midterm Flashcards

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
Q

How is cytauxzoon felis transmitted?

A

by ticks

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26
Q

How can dogs become infected with Hepatozoon americanum?

A

ingesting tick containing sporulated oocysts

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27
Q

Where is the amoeba, Naeglaria found?

A

freshwater lakes or ponds

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28
Q

Who is the DH for neospora? How is it transmitted?

A

dogs

transplacentally

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29
Q

What are the CS of neospora in puppies?

A

ascending paralysis

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30
Q

Who are the IH and DH of sarcocystis spp?

A

DH - predator

IH - prey

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31
Q

What is the cause of EPM in horses?

A

Sarcocystis neurona

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32
Q

What is the DH of sarcocystis neurona?

A

possums

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33
Q

What are the CS of EPM?

A

assymetrical neurological signs

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34
Q

Where does crypto like to live in the host?

A

microvillus border

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35
Q

How can crypto re infect host?

A

thin walled cyst ruptures

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36
Q

What is the time frame and CS of crypto in calves?

A

caramel diarrhea, 1-2 weeks old

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37
Q

What are the two etiological agents of “Black dz” in sheep?

A

Fasciola hepatica and clostridium novyi

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38
Q

Where does fasciola hepatica live?

A

bile duct

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39
Q

What is the pathology of Fasciloides magna in sheep?

A

destroys liver paranchyma (cant find bile duct)

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40
Q

What is the IH of Fasciola hepatica and Fasciloides magna?

A

snail

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41
Q

What parasite uses both ants and snails as IH?

A

Dicrocylium dendriticum

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42
Q

What is the brain eating amoeba that has no treatment?

43
Q

What is the cause of salmon poisoning in dogs?

A

Neorickettsia bacteria (from trematode nanophyteus salmincola)

44
Q

What is the 1st and 2nd IH of Paragonimus kellicotti?

A

1st - snail

2nd - crayfish

45
Q

What will be seen on radiographs of lungs with dogs or cats infected with lung fluke (paragonimus kellicotti)?

A

chain link fence appearance

46
Q

What is the IH and DH of Tania saginata?

A

IH - cattle

DH - people

47
Q

What is the DH and IH of Tania solia?

A

DH - man

IH - swine or man

48
Q

What happens when man is the IH of Tania solia?

A

neurocysticercosus

49
Q

What two species of tapeworm have dog as DH and rabbit as IH?

A

Tania pisiformis

Multiceps serialis

50
Q

What is the DH and IH of Tania taniaformis?

A

DH - cat

IH - mouse

51
Q

What tapeworm can cause exopthalmus in rabbits?

A

Multiceps serialis

52
Q

What two tapeworms have dog as DH and sheep as IH?

A

Multiceps multiceps

Echinococcus granulosus

53
Q

Which tapeworm has a larval form that is a coenurus and has multiple scolex in the wall?

A

Multiceps multiceps

54
Q

What genus of tapeworm causes hydatid cysts in animals and humans?

A

Echinococcus

55
Q

Which tapeworm causes hydatid cysts that act like metastatic cancer?

A

Echinococcus multilocularis

56
Q

What is the DH and IH of Echinococcus multilocularis?

A

DH - Fox, dog,

IH - rodent, human

57
Q

What are the DH and IH of Diplydium spp?

A

DH - dogs, cats, humans

IH - fleas or lice

58
Q

What is the head called in the family Pseudophyllidea?

59
Q

What 2 genus are in the Pseudophyllidea family of tapeworms?

A

Spirometra and Dyphilobothrium

60
Q

What is the 1st and 2nd IH, and DH for Spirometra spp.?

A

first IH - copepod
2nd IH - frogs, people
DH - dogs, cats

61
Q

What is the 1st, 2nd IH and DH for Dyphilobothrium?

A

1st IH - copepod
2nd IH - salmonids
DH - dogs, cats

62
Q

What is the IH for the stomach worm (physoloptera)?

A

beetles or crickets

63
Q

What is the DH for physoloptera?

A

dogs, cats, possums

64
Q

What are the three species of physaloptera that occur in the stomach of cats and dogs?

A

P. rara
P. felidis
P. praeputialis

65
Q

When do toxacara eggs become infective in the feces?

66
Q

What are the 4 way of transmission of Toxacara canis?

A

transplacentally
fecal - oral
transmammary
transport host

67
Q

What can Toxacara canis cause in humans?

A

visceral and ocular larval migrans

68
Q

What is the IH of Spirocerca lupi?

69
Q

What are the CS of Spirocerca lupi?

A

all sorts of path - excessive bony growth, cancer

70
Q

Where does S. lupi live in the host?

71
Q

What is the IH of Dracunculus?

72
Q

What is the clinical significance of Dipetalonema reconditum?

A

confused with microfilaria

73
Q

Where does Dracunculus live and what is the treatment?

A

skin - surgical removal

74
Q

How is Toxacara cati transmitted?

A

transmammary

75
Q

What zoonotic disease does T. cati cause?

A

ocular larva migrans - not common

76
Q

What roundworm infects both dogs and cats?

A

Toxacara ascaris

77
Q

What is the life cycle and zoonosis for Toxacara ascaris?

A

doesnt migrate - develops in SI

not zoonotic

78
Q

What is the southern hookworm?

A

Anclyostoma caninum

79
Q

What is the northern hookworm?

A

Uncinaria stenocephala

80
Q

What are the CS of hookworm?

A

pot belly, dull hair coat, vomiting, diarrhea

81
Q

What are the CS of peracute hookworm in puppies?

A

10-12 day old, black tarry stools, anemia, fecal negative

82
Q

What zoonotic disease does hookworm cause?

A

cutaneous larval migrans

83
Q

What is the PPP of Trichuris vulpis?

A

90 days in dogs

84
Q

What is the #1 cause of large bowel diarrhea?

A

Tricuris vulpis

85
Q

What worm, hook, round, or whip do cats not get?

86
Q

What worm causes milk spots in pig liver?

A

Ascaris suum

87
Q

What parasite causes thin sow syndrome?

A

Esophogastomum (nodular worm)

88
Q

What is the whipworm of pigs and lives in the cecum?

A

Trichuris suis

89
Q

What is the IH for Habronema spp?

90
Q

What disease can habronema cause in the skin of horses?

A

summer sores

91
Q

What parasite causes nodules in the stomach of horses?

92
Q

What is the most common roundworm found in horses?

A

Parascaris

93
Q

What parasite resides in the Cr. mesenteric artery of horses?

A

Strongylus vulgaris

94
Q

What strongly doesnt migrate and has a seasonal life cycle?

A

Cyasthomes

95
Q

What is the pin worm for horses?

A

Oxyuris equi

96
Q

What is the horse threadworm and also infects donkeys?

A

Strongyloides westeri

97
Q

What larval form of heartworm migrates into wound after mosquito bites?

98
Q

When does a heartworm become L5?

99
Q

What is the PPP from mosquito to microfilaria?

A

6-7 months

100
Q

What is the IH for moniezia?

A

orbatid mites

101
Q

What moniezia species infects sheep?

A

M. expansa

102
Q

Where does anoplocephala magna live in the DH?

A

upper small intestine

103
Q

Where does Moniezia expansa live in the sheep?

A

small intestine

104
Q

What anoplocephala tapeworm lives in cattle?

A

Moniezia benedeni

UI 607 Parasitology (3 decks)

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