Comprehensive Review Flashcards
1
Q
Identify this parasite of swine
A
Haematopinus suis
The sucking louse of swine
2
Q
Neurocysticercosis is associated with which parasite?
Which form is ingested by humans?
A
Taenia solium
Humans ingest the oncosphere
3
Q
Which swine parasite causes “milk spots”?
A
Ascaris suum
4
Q
What is the common name for Amblyomma americanum?
A
Lone Star Tick
5
Q
Though Balantidium spp. is not considered a primary pathogen, what is the key clinical sign?
A
dysentery
6
Q
What is the infective stage for Ascaridia spp?
A
Egg with L2
7
Q
Which cestode is associated with the term “Nodular Tapeworm Disease”?
A
*Raillietina *spp.
8
Q
Isospora suis is associated with which age group of pigs? What is the main clinical feature?
A
1-2 week old piglets, yellow diarrhea
9
Q
Which species transmits Habronema spp. to horses?
A
Stomoxys calcitrans
(Stable fly)
10
Q
Which ruminant parasite has developed resistance to all groups of anthelminthics?
A
Haemonchus contortus
11
Q
What are the sites of infestation for the horn fly? What is the scientific name?
A
Haematobia irritans
Back, sides, and abdomen of cattle
12
Q
What is the common name for Linognathus vituli?
A
Long-nosed cattle louse
13
Q
This protozoan is a major cause of abortion in dairy cows all over the world:
A
*Neospora *spp.
14
Q
What is the infective stage for Teladorsagia circumcinta?
A
L3
15
Q
In which species is Gamma radiation used for control?
A
Screwworm
Cochliomyia hominovorax
16
Q
What is the infective stage for Balantidium spp?
What is the most severe clinical sign?
A
Cyst.
Dysentery
17
Q
What is the infective stage for Leucocytozoon spp?
A
Sporozoite
18
Q
What is the infectivestage for *Sarcocystis neurona *in the final host?
A
Mature sarcocyst
19
Q
What is the most common route of infection for Toxocara canis?
A
Transplacental/prenatal
20
Q
Which parasite is responsible for causing the most severe cutaneous larval migrans in humans?
A
Ancylostoma braziliense
(hookworm)
21
Q
What is the most common lungworm in cats?
A
Aelurostrongylus abstrusus
22
Q
What is the most common tick on dogs in most of North America?
A
Dermacentor spp.
23
Q
Which parasite is considered to be the most important parasite of cattle in the USA?
A
Ostertagia ostertagi
24
Q
Together with Ostertagia, this parasite is the most common nematode of weanling age cattle in North America:
A
*Cooperia *spp.
25
Which parasite could potentially cause the most severe cattle mange?
*Sarcoptes scabiei*
26
Which parasite is considered the most pathogenic of lice infesting sheep?
*Damalinia ovis*
27
What is the most common poultry mite?
*Ornithonyssus* spp. (Fowl mite)
28
Which family of ticks do **hard ticks** belong to?
**Ixodidae**
29
What is the common name for *Ambylomma maculatum*?
Gulf coast tick
30
What is the common name for *Cheyletiella yasguri*?
"walking dandruff"
31
Which species of *Heterakis* spp. is pathogenic?
## Footnote
*Heterakis isolonche *
Infections with H. isolonche may produce diarrhea, emaciation and death.
32
What is the scientific name for the **Red chicken mite**?
## Footnote
*Dermanyssus* spp.
33
What is the #1 cause for abortion in dairy cows all over the world?
*Neospora *spp.
34
Which diagnostic method would you use to diagnose *Sarcoptes scabiei* in pigs?
Ear swab!
35
Identify this parasite in swine. What clinical signs are associated with this parasite in pigs? Where is the larval stage found? What is the diagnostic stage?
*Trichinella spp.*
No clinical signs in pigs. Larval stages are found in muscle.
Diagnostic stage: Coiled L1 in striated muscle.
36
What is the infective stage of *Sarcocystis neurona* for the final host?
Mature sarcocyst
37
Perianal irritation associated with *Oxyuris equi* leads to _what clinical sign_?
Pruritus (itching)
38
How long can Cyanthostomin larvae live in the intestinal wall?
Up to 2.5 years
39
Which parasite may lead to the classic "air hunger" position in an animal?
*Dictyocaulus viviparus *(Cattle lungworm)
40
Which parasite is known to transmit viruses of bluetongue and African horse sickness?
*Culicoides *spp.
41
What is the infective stage for *Parascaris equorum*?
**L2 in egg**
42
At what age are cattle most susceptible to *Babesia bigemina*?
Older animals are more susceptible, younger animals are more immune.
## Footnote
**Inverse Age Susceptibility**
43
From the 1st exam: The primary purpose of a veterinarian is...
to minimize impact on production.
44
What is the main **mite** of sheep?
*Psoroptes ovis*
45
If you hear "Poor Sow Syndrome," which two parasites should immediately come to mind?
*Hyostrongylus *spp. and *Oesophagostomum *spp.
46
When can you find *Dermanyssus gallinae* on the avian host?
night time
| ("night mite")
47
What is the life cycle of **lice**?
Egg --\> Nymph --\> Adult
48
What is the life cycle of **fleas**?
Egg --\> Larvae --\> Pupa --\> Adult
49
What is the life cycle of **flies**?
Egg --\> Larvae --\> Pupae --\> Adult
50
What is the life cycle of **ticks**?
Egg --\> Larvae --\> Nymph --\> Adult
51
What is the life cycle of **mites**?
Egg --\> larvae --\> nymph --\> adult
52
Small white worms measuring 1-1.5 cm were discovered in the cecum of a chicken during necropsy.
What is the parasite? What is the infective stage?
*Heterakis *spp.
L2 in egg is infective
53
Which parasites that we've covered are **reportable**?
* *Psoroptes ovis*
* *Sarcoptes scabiei* in cattle
* *Cochliomyia hominovorax*
* *Rhipicephalus (Boophilus) annulatus* (cattle)
54
Which parasites that we've covered cause **bottle jaw**?
* *Fasciola hepatica*
* *Haemonchus contortus*
* *Ostertagia ostertagi*
* *Teladorsagia*
55
You see these eggs in the feces of a chicken with bloody diarrhea.
What is the parasite? What other signs might you see?
*Eimeria* spp.
Persistent cecal core of clotted blood
56
Which of the following requires a human as one of its hosts?
1. *Taenia solium*
2. *Taenia saginata*
3. *Taenia hydatigena*
4. 1 and 2
5. 2 and 3
4. *Taenia solium* & *Taenia saginata*
57
You remove this louse from a pig.
What could it be? Is it Ischnoceran or Anopluran?
*Haematopinus suis*
Anopluran
58
Which of the following is TRUE about *Trichomonas*?
1. Cysts are the infective stage in pigeons
2. The best diagnostic method is a preputial wash in the bull
3. It is found in the small intestine
4. Birds can get it from a contaminated drinking source
4. Birds can get it from a contaminated drinking source
59
Which of the following is TRUE about *Tritrichomonas*?
1. Cysts are the infective stage in pigeons
2. The best diagnostic method is a preputial wash in the bull
3. It is found in the small intestine
4. Birds can get it from a contaminated drinking source
2. The best diagnostic method is a preputial wash in the bull
60
Farmer Jones has noticed that his chickens have been restless all the time. You look and find this parasite on the chickens.
What is your diagnosis? What is your recommendation for Farmer Jones?
*Ornithyssus* spp.
Remove the chickens, clean the coop, and leave it empty for 2-3 weeks
61
What nematode is known for causing both urticaria and diarrhea?
Strongyloides westeri
62
Which of the following does not allow for transplacental transmission?
1. Strongyloides stercoralis
2. Strongyloides westeri
3. Strongyloides papillosus
4. Strongyloides ransomi
**Strongyloides westeri**
63
What is FAMACHA used for?
it is used to identify animals that need treatment and as a targeted selective treatment protocol
\***remember: this is NOT used to *diagnose* anything!**
64
What is periparturient rise?
An increase in the number of parasite eggs in the feces prior to parturition.
65
You use the McMaster method to look at the amount of eggs per gram as well as fecal culture in Farmer Smith’s 5 cows to determine whether they need to be dewormed at that time and what kind of dewormer they require.
This is an example of what kind of anthelmintic protocol?
Selective
66
You remove this louse from a dog.
What could it be?
*Linognathus setosus*
67
You remove this louse from a sheep.
What could it be?
*Linognathus ovillus* or *Linognathus pedalis*
68
What is the common name associated with Syngamus trachea?
Gapeworm
69
What is the common name associated with Sarcophagidae?
Flesh fly
70
What is the common name associated with Calliphoridae?
Blowfly
71
What is the diagnostic test associated with *Tritrichomonas foetus*
Bovine preputial wash
72
You find this during necrospsy on the liver of a pig who had decreased weight gain and pneumonia. What is your diagnosis?
Ascaris suum
73
You find this during necrospsy on the liver of a turkey who had enterohepatitis and cecal inflammation. What is your diagnosis?
*Histomonas* spp.
74
You see these eggs in the feces of a chicken and on necropsy you see white worms in the **small intestine**.
What is your diagnosis?
*Ascaridia* spp.
75
You see these eggs in the feces of a chicken and on necropsy you see white worms in the **cecum**.
What is your diagnosis?
*Heterakis* spp.
76
You find this parasite near a new cow that you are examining for Dr. Jones. What is it?
*Otobius* spp.
77
You find this parasite near a new cow that you are examining for Dr. Jones.
Where does the larvae live on the host?
*Otobius* spp.
Larvae in ears
78
Which order of Cestoda requires 2 intermediate hosts?
Pseudophyllidea
79
What is the prepatent period?
Time taken for development from infection until the mature adult parasites are producing eggs, larvae or other stages
80
What is the common name for *Ancylostoma *spp?
Hookworm
81
What is the infective stage for *Trichuris* spp?
L1
82
What is the infective stage for *Strongyloides westeri*?
L3
83
What is the infective stage for *Echinococcus granulosus*?
Hydatid cyst
84
What is the infective stage for *Taenia hydatigena*?
Cysticercus
85
What is the infective stage for *Anoplocephala magna*?
Cysticercoid
86
Where do you find Hypoderma bovis in the overwintering stage?
In the epidural fat of the spinal cord
87
Where do you find *Hypoderma lineatum* in the overwintering stage?
Esophagus
88
What is the intermediate host for Mullerius spp in the sheep?
snail
89
What is the intermediate host for Metastrongylus spp in the pig?
Earthworm
90
What is the intermediate host for Moniezia?
Orbatid mite
91
What pathogenicity do you associate with Taenia hydatigena in sheep?
Hepatitis cysticercosa
92
In which trimester does *Sarcocystis* spp cause abortions?
3rd
93
In which trimester does *Neospora* spp cause abortions?
2nd
94
In which trimester does Tritrichomonas spp cause abortions?
1st
95
What is unique about Cryptosporidium?
It can autoinfect
96
What type of mouthparts does Stomoxys calcitrans have?
Piercing/ sucking
97
What is the disease condition in humans for the Zipperworm?
Sparganosis
98
What type of parasite has the following life cycle: Miracidia, Cercariae, Mesocercariae?
Fluke
99
T/F: Trichodectes canis is an ischnocera louse
True
100
What is **coccidiasis **(as opposed to coccidi**_osis_**)?
Coccidi**_asis_**: eggs are present in the feces, but the animal is not suffering from clinical signs
101
What is the best treatment option for a pregnant cow with ticks?
**Eprinomectin** (MCLs)
102
Which type of organisms are parasites of epithelial cells?
Coccidia protozoans
103
What is/are the site(s) of infection for *Damalinia bovis* in cattle?
head, poll, neck, shoulders, back, tail switch
104
What is the infective stage for *Dictyocaulus *spp?
L3
105
What is the infective stage for *Nematodirus* spp?
L3
106
What is the infective stage for *Oesophagostomum *spp?
L3
107
What is the infective stage for *Hyostrongylus *spp?
L3
108
What is the infective stage for *Dipylidium caninum*?
Cysticer**_coid_**
109
Which suborder of lice is slow-moving and (in general) more pathogenic?
**Anoplurans**
110
How many pairs of legs do adult arachnids have? What about arachnid larval stages?
4 pairs in adults
3 pairs in larval stage
