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Parasitology > Quiz 6 > Flashcards

Quiz 6 Flashcards

1
Q

What is the genus name for a Whipworm?

A

Trichuris

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2
Q

What does the anterior vs posterior end of this worm look like?

A

anterior end is thinner than posterior

whip-like looking

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3
Q

What kind of esophagus does trichuris have?

A

stichosome esophagus

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4
Q

Which egg looks lemon or brown and is football shaped, with symmetrical bipolar plugs?

A

Trichuris

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5
Q

Is the trichuris resistant in the environment?

A

yes

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6
Q

Which stage is the Trichuris infective?

A

L1

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7
Q

Where are the adults of Trichuris located in the host

A

Cecum/colon

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8
Q

Which Trichuris spp is in dogs and foxes?

A

vulpis

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9
Q

the symptoms of t. vulpis mimick what?

A

Addisons Dz-abnormal Na and K values

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10
Q

Is vulpis zoonotic?

A

yes

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11
Q

Which spp of trichuris gives pigs catarrhal enteritis?

A

suis

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12
Q

Which spp of trichuris occurs in ruminants?

A

discolor

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13
Q

Which two spp of Trichuris occur in cats?

A

serrata and campanula

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14
Q

Does T. discolor cause major ad frequent infections?

A

It does cause frequent but no major infections.

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15
Q

Dx of Trichuris?

A

FF, Fecal Ag ELISA

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16
Q

How do you control Trichuris? What do you need to remember about the eggs?

A

Tx soil then replant grass.
Remove host
Eggs are resistant in environment

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17
Q

What whipworm has a barrel shape without symmetrical bipolar plugs and is not whip shaped?

A

Capillaria

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18
Q

Which capillaria occurs in dogs cats foxes and coyotes?

A

Aerophilia

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19
Q

Where is c. aerophilia located at in the DH?

A

trachea, bronchi, nasal cavity, frontal sinus

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20
Q

Is C. aerophilia zoonotic?

A

yes, presents as bronchial carcinoma

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21
Q

What color is the C. aerophilia eggs?

A

Green tinge, and its not as smooth as whipworm

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22
Q

What is the life cycle of the C. aerophilia?

A

L1 ingested-intestines-lungs. Adults in lungs-coughed up-swallowed-removed in feces back as L1. The DH ingests

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23
Q

What is the facultative C. aerophilia facultative intermediate host?

A

Eartworm. L1 ingested by earthworm, DH eats the eartworm that has the L1 in it.

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24
Q

What spp is the C aerophilia more pathogenic in?

A

Foxes-cough, weakness, poor growth, death due to bronchopneumonia

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25
Q

Dx of C aerophilia?

A

Eggs found in sputum, feces or nasal discharge

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26
Q

How can you control C aerophilia?

A

Keep animals away from shaded areas where an earthworm might be

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27
Q

Where is Capillaria Pearsonema found in the body? and what is this dz called?

A

In the bladder

Urinary Capillariasis

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28
Q

What are the spp and hosts urinary capillariasis found in?

A

plica=dog

feliscati=cat

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29
Q

What kind of Dx test would you run to see this capillaria plica/feliscati?

A

Urine sample

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30
Q

Life Cycle of Capillaria pearsonema?

A

Eggs in urine–L1, earthworm ingests, DH ingests earthworm that contains the L1. The egg has to be ingested by the earthworm for it to hatch from egg

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31
Q

Where is C. boehmi found in the DH? and what is the DH?

A

Nasal capillarasis-frontal sinus, nasal, paranasal sinus.

dog and fox

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32
Q

What is the Life cycle of c. (eucholeus) boehmi?

A

UNKNOWN

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33
Q

Dx of C. boehmi?

A

Feces, nasal wash-eggs covered in tiny pits

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34
Q

What is different about the way the Trichnella spiralis reproduce?

A

They are larviporous

female produce larvae NO EGGS

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35
Q

Who are the hosts for T. spiralis?

A

Pigs, HUMANS, rats, mammals

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36
Q

Where will you find adult/larvae T. spiralis in the host body?

A

Adults: Muscosa of SI

Larvae: Encysted in SM of IH

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37
Q

What is special and about the DH/IH of T spiralis?

A

the DH can also be an IH–pgs are cannibals!

38
Q

What is the life cycle of T. spiralis?

A

DH ingests muscle that has encysted L1 larvae.
L1 liberated by digestive enzymes of DH and travel to SI
M n F mate (male dies after) female produces prelarvae
The prelarvae enter lymphatics-systemic
travel to Sk m, develop into L1 and encyst, wait until eaten by another host.

39
Q

How can humans get T. spiralis?

A

eated raw/poorly cooked pork

40
Q

What are the clinical signs of T. spiralis?

A

diarrhea, enteritis, fever, stiffness (duh, in sk m), muscle pain, dyspnea, eosinophillia, periorbital and facial swelling. Fatal for humans

nonpath in swine

41
Q

Dx T. spiralis

A

Serological ONLY

life cycle? larviparous–so no eggs!!! and no life cycle part is in the enivronment

42
Q

What is the scientific name for the giant kidney worm

A

Dioctophyma renale

43
Q

Who is the direct host for D. renale?

but what else about the hosts?

A

MINK

but it is not host specific-dog, fox, wolf, cat, pig, horse, cattle.

44
Q

which is large in d. renale, male or female?

A

cmon!! females!!!

45
Q

How do the eggs of D renale look?

A

thick, pitted, barrel shapped, yellow-brown, bipolar plugs

46
Q

How is D renale shed?

A

Urine!!! uuhh renal….urine…

47
Q

Is there a kidney D. renale is most likely to affect?

A

YES!! Right

48
Q

Life cycle of D renale

A 
INDIRECT.  
renale...egg is passed in urine. 
ingested by IH (oligochaete annelid)--develops in L3 in IH
IH ingested by DH or PH
L3 travels to Kidney-adult
49
Q

Who is the paratenic host for D renale?

A

frogs, crayfish and fish

50
Q

Clinical signs of D renale?

A 
destruction of kidney
calification of parenchyma of kidney
uremia if they project in ureter
chronic peritonitis with adhesions
destroy the liver surface
51
Q

What is the TX of D renale?

A

Nephrectomy, or surgerical removal of worms

52
Q

What parasite has a bulb shaped esophagus, pointed tail and has a direct life cycle?

A

Oxyuris equi

53
Q

Where are the adults found of O equi in the DH?

A

Lumen of small colon, maybe large colon

54
Q

What is different about the O equi eggs?

A

one operulum, unembryonated

55
Q

What is the life cycle of O equi

A

Direct.

Egg is ingested to SI, hatch, then move to colon.

56
Q

What is special about elimination of O equi

A

They cement egg masses on the skin of the anus/perianal region. the fluid dries and cracks and flakes to ground and the eggs are ingested, hatch in SI and then move to colon

57
Q

What are the clincial signs of O equi?

A

Intense pruritus, hair loss on tail, hyperkeratosis

58
Q

DX o equi?

A

Scotch tape test

59
Q

What is the order name that has facultative parasites?

A

Rhabditiform Nematodes

60
Q

What is the family were the females are the parasite

A

Strongyloides

61
Q

The females of strongyloides have what kind of eggs

A

ovoviviparious

62
Q

Where are the males of strongyloides?

A

Free-livings

63
Q

What is the name of the parasite of strongyloides were the hosts are primates and canids?

A

Stercoralis

64
Q

What is the name of the parasite of strongyloides were the hosts are cats (3)

A

felis, tumefacians, plaiceps

65
Q

What is the name of the parasite of strongyloides were the hosts are ruminants

A

papillosus

66
Q

What is the name of the parasite of strongyloides were the hosts are equines?

A

westeri

67
Q

What is the name of the parasite of strongyloides were the hosts are pigs?

A

ransomi

68
Q

Which strongyloides are zoonotic?

A

Stercoralis, tumefacians

69
Q

What occurs in humans if they get strongyloides?

A

Larvae currens

70
Q

What kind of reproduction do the females of stronyloides have?

A

Parthenogenetic-can develop without a male.

71
Q

How is strongyloides transmitted?

A

Transmammary in most

Oral in cats

Skin penetration

72
Q

What stage of life is it most common to see a strongyloides infection?

A

Young

Older are resistant

73
Q

What is internal autoinfection of the human?

A

L1 can develop in digestive tract to L3 without passing into the environment

74
Q

What external autoinfection?

A

L3 can start to pass out into feces and then re-infect by perianal penetration of skin

75
Q

What is hyperinfection?

A

The extreme chronicity of infection and the explosive development of massive disseminated infection that may overwhelm P with depressed cell-mediated immunity

76
Q

How do you Dx Strongyloides?

A

Baermann Technique-tunnel with bag of fresh poop so the larvae swim out, drown and sink.
You will see the rhabditiform larvae and infective filariform (long esophagus) L3.

77
Q

Thelazia Lacrymalis host?

A

Horse (eyeworm)

78
Q

Where is T lacrymalis found in the host?

A

Conjunctival sac and lacrimal ducts, maybe aqueous humor

79
Q

When will you see problems with Thelazia lacrymalis? and what will you see with it?

A

With heavy infections.

Progessive keratitis, ulceration and increased opacity of cornea which can lead to blindness

80
Q

Diagnosis of thelazia lacrymalis?

A

Seeing the parasite in the eye. L1

81
Q

What is the life cycle of Thelazia lacrymalis?

A

Indirect:
Embryonated eggshatch in the uturs of the worm
L1 travels to surface of the eye in horse-
L1 is picked up by a mucoid fly and the larvae develop into the infective L3 in the fly
L3 deposited around the eye of the horse by the fly
Develops into an adult

82
Q

Thezalia californiensis host?

A

Dog

83
Q

Who is the IH for Thezalia californiensis?

A

Muscoid Latrine Fly and Fruit Flies

84
Q

Is T. californiensis zoonoitc?

A

yes

85
Q

Dx and and life cycle of T californiensis?

A

Same as T. lacrymalis

86
Q

What is the host for Habronema?

A

Equines

87
Q

Where in the host is the Habronema found?

A

Stomach

rarely cecum and colon

88
Q

What do the adults of the habronema look like?

A

Cylindrical buccal capsules

89
Q

What does the egg of the Habronema look like?

A

Long, thin shelled embryonated.

“hot dog” shaped.

90
Q

Life cycle of Habronema?

A

Adults produce eggs that hatch in the intestines OR feces
L1 ingested by maggots (larvae) of flies–Musca domestica and stomoxys
L1 to L3 by the time the adult flies emerge from pupa
L3 migrates to mouth of fly and escape when the fly feeds around the mouth lips or wounds of equines

91
Q

How does the Habronema develop while in the DH

A

Fly is ingested, development of worms in the stomach

Larvae deposited in wounds-CUTANEOUS HABRONEMIASIS

Larvae develop in the eye-Ocular habronemiasis

Larvae enter the blood and travel to lung–Pulmonary Habronemiasis

92
Q

What are summer sores from?

A

cutaneous habronema. Can cause PROUD FLESH–excess granulation tissue

Parasitology (5 decks)

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