Ch 48 Arthropods 1d

Question 1

What are the two basic families of Sarcoptiform mites?

Answer 1

Sarcoptidae and Psoroptidae

Question 2

What is a characteristic behavior of Sarcoptidae mites?

Answer 2

Burrow or tunnel in epidermis

Question 3

What condition is caused by Sarcoptes scabiei?

Answer 3

Sarcoptic mange

Question 4

Is Sarcoptes scabiei zoonotic?

Answer 4

Yes

Question 5

What is the normal habitat of Demodex sp.?

Answer 5

Hair follicles and sebaceous glands of the skin

Question 6

What is necessary for Demodex infestation to become clinically apparent?

Answer 6

Immunodeficiency

Question 7

What are the clinical signs of Demodex infestation?

Answer 7

• Hair loss
• Thickening of the skin
• Pustule formation

Question 8

How is Demodex diagnosed?

Answer 8

Deep skin scraping

Question 9

Describe the shape of Demodex mites.

Answer 9

Cigar-shaped

Question 10

What type of mites are Psoroptidae?

Answer 10

Nonburrowing mites

Question 11

What do Psoroptidae mites feed on?

Answer 11

• Keratinized scale
• Hair
• Tissue fluids

Question 12

Which species of Psoroptidae is important in sheep?

Answer 12

Psoroptes

Question 13

What is the important species of Chorioptes in cattle?

Answer 13

Chorioptes bovis

Question 14

What is Cheyletiella commonly known as?

Answer 14

Walking dandruff

Question 15

What is Otodectes cynotis associated with?

Answer 15

External ear canal

Question 16

Pentastomids resemble what type of organism?

Answer 16

Helminths

Question 17

What is the scientific name of the canine pentastomid?

Answer 17

Linguatula serrata

Question 18

Where are Pentastomids usually found?

Answer 18

Parasites of snakes and reptiles

Question 19

What is the role of Hirudo medicinalis in veterinary medicine?

Answer 19

Ectoparasite with pathogenic and beneficial roles

Question 20

What is hirudiniasis?

Answer 20

Invasion of the nose, mouth, pharynx, or larynx, or attachment of leeches to the skin

Question 21

What do leeches feed on?

Answer 21

Blood

Question 22

What can happen to a host due to leech feeding?

Answer 22

May become anemic or die from blood loss

Question 23

In what types of water are most leeches found?

Answer 23

Fresh water, a few in salt water

Question 24

What orders of insects are known to parasitize animals?

Answer 24

• Hemiptera
• Mallophaga
• Anoplura
• Diptera
• Siphonaptera

Question 25

What is the term for infestation by lice?

Answer 25

Pediculosis

Question 26

What is the term for infestation by dipterans?

Answer 26

Myiasis

Question 27

What is the term for infestation by fleas?

Answer 27

Siphonapterosis

Question 28

What is the term for infestation by mites or ticks?

Answer 28

Acariasis

Question 29

What are the two types of ticks?

Answer 29

• Hard ticks
• Soft ticks

Question 30

What type of mites burrow into the epidermis?

Answer 30

Sarcoptiform mites

Question 31

What type of mites survive on the surface of the skin?

Answer 31

Nonburrowing mites (Psoroptidae)