Ch 48 Arthropods 1d Flashcards
(31 cards)
What are the two basic families of Sarcoptiform mites?
Sarcoptidae and Psoroptidae
What is a characteristic behavior of Sarcoptidae mites?
Burrow or tunnel in epidermis
What condition is caused by Sarcoptes scabiei?
Sarcoptic mange
Is Sarcoptes scabiei zoonotic?
Yes
What is the normal habitat of Demodex sp.?
Hair follicles and sebaceous glands of the skin
What is necessary for Demodex infestation to become clinically apparent?
Immunodeficiency
What are the clinical signs of Demodex infestation?
- Hair loss
- Thickening of the skin
- Pustule formation
How is Demodex diagnosed?
Deep skin scraping
Describe the shape of Demodex mites.
Cigar-shaped
What type of mites are Psoroptidae?
Nonburrowing mites
What do Psoroptidae mites feed on?
- Keratinized scale
- Hair
- Tissue fluids
Which species of Psoroptidae is important in sheep?
Psoroptes
What is the important species of Chorioptes in cattle?
Chorioptes bovis
What is Cheyletiella commonly known as?
Walking dandruff
What is Otodectes cynotis associated with?
External ear canal
Pentastomids resemble what type of organism?
Helminths
What is the scientific name of the canine pentastomid?
Linguatula serrata
Where are Pentastomids usually found?
Parasites of snakes and reptiles
What is the role of Hirudo medicinalis in veterinary medicine?
Ectoparasite with pathogenic and beneficial roles
What is hirudiniasis?
Invasion of the nose, mouth, pharynx, or larynx, or attachment of leeches to the skin
What do leeches feed on?
Blood
What can happen to a host due to leech feeding?
May become anemic or die from blood loss
In what types of water are most leeches found?
Fresh water, a few in salt water
What orders of insects are known to parasitize animals?
- Hemiptera
- Mallophaga
- Anoplura
- Diptera
- Siphonaptera
