Ectoparasite Review Questions Flashcards Preview

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Flashcards in Ectoparasite Review Questions Deck (29):
1

Are fleas host specific?

No, they have a predisposition, but will take any they can get.

2

What is FAD?

Flea Allergy Dermatitis
-allergy to saliva of flea, some animals are hypersensitive.

3

Which flea species is most common in dogs and cats?

Ctenocephalides felis
-85% to 90%

4

What is another way of dx'ing fleas if there are no fleas present on an animal?

The presence of "flea dirt". This can be distinguished by moistening a cotton ball with water, and placing sample on the cotton ball. If debris turns red, it is flea dirt.

5

Name two commercial topical flea treatments.

-Advantage (Imidacloprid)
-K9 Advantix (Imidacloprid + Permethrin)

6

What are the two important groups of lice? Which are sucking, and which are biting?

1. Anoplura - Sucking
2. Mallophaga - Biting / Chewing

7

Name the three species of lice which we discussed and give which group they belong to.

Anoplura
-Haematopinus spp.
-Linognathus setosus
-Polyplax spp.

Mallophaga
-Felicola subrostratus
-Trichodectes canis

8

Where are the egg/nits of lice found?

Attached to the hair/feathers on the head, base of ears, and elbow areas. They like dark furred areas.

9

Name two treatments for lice.

1. Ivermectin
2. Permethrins

10

Are all mites pathogenic? If not, why?

No, not all mites are pathogenic. Some of them are normal fauna of mammals.
-Demodex is only a prob if immune suppressed.

11

Cheyletiella spp.

Walking Dandruff

12

Sarcoptes

Scabies

13

Notoedres

Cat Scabies

14

Demodex

Red Mange or Follicular Mange

15

Otodectes

Ear Mites

16

Which mite is found by using the cellophane tape method?

Cheyletiella spp.

17

Which mite causes very severe pruritus and can be recovered by skin scrape, but this method is not always successful at finding the mite?

Sarcoptes scabiei

18

Which mite parasitizes the external ear canal and causes a crusty, thick, black debris?

Otodectes cynotis

19

What are two main tick groups, and which one has a scutum?

1. Argasidae
2. Ixodidae - has a scutum

20

Which tick transmits Lyme disease?

Ixodes scapularis

21

What is the organism that causes Lyme disease?

Borrelia burgdorferi

22

How are tick-borne illnesses dx'ed?

ELISA, serological tests.

23

What are some general signs of tick-borne illnesses?

Fever, lethargy, anorexia.

24

What is the organism that causes Rocky Mt. Spotted Fever?

Rickettsia rickettsii

25

Which fly species is an aggressive blood feeder?

Tabanus spp.
-Horsefly & Deerfly

26

Name two species of fly in which the larval stage is found in the stomach.

Hypoderma spp. - cattle bot fly
Gasterophilus spp. - bot fly (stomach bot of horses)

27

Where is Oestrus ovis larvae usually found?

In the sinuses of sheep.

28

Where is the larval stage of Cuterebra spp. found?

Below the skin (subcutaneous).
-around neck, face, chest of dogs, cats, rabbits, squirrels, mice.
-or in stomach.

29

What is the treatment method for Cuterebra spp.?

Very careful extraction of the larvae. Damaging it will release toxins, and may cause the animal to go into anaphylaxis. Once extracted, the would is treated with antimicrobials.