Otodectes cynotis (1)

Question 1

What is the common name?

Answer 1

Ear mite

Question 2

What are the hosts?

Answer 2

Dogs

Cats

Humans

Ferrets

Foxes

Rabbits

Question 3

How do you identify?

Answer 3

Up to 300 micro m

Long legs extend beyond body margin

Copious dark cerumen is observed

Pretarsi/pedicels

 - Short
 - Unsegmented 
 - Large suckers

Question 4

Explain the life cycle

Answer 4

Complete life cycle in ear

PPP: 2-3 weeks

Question 5

What is the site of infestation?

Answer 5

External Ear canal and adjacent areas

Question 6

Describe the Pathogenesis

Answer 6

Kittens and puppies are easily infested - contact with dam

In cats - dry, waxy parchment like material in ears with large number of
mites

Common cause of otitis externa

Irritation

Large amounts of cerumen
- Along with mite debris and blood becomes thick, dark and dry
giving appearance of “coffee grounds”
- Discharge in dogs usually minimal

Question 7

What are the clinical signs?

Answer 7

Shaking head

Scratching ears

Inflammation of ear canals

Question 8

How do you diagnose?

Answer 8

Behavior of animal

Exudate in ear canal

Mites on slide

Mites in ear observed with otoscope

Observed on swabs of ear canal

Question 9

How do you treat?

Answer 9

Topical acaricidal treatments

Question 10

What is important about Otodectes cynotis?

Answer 10

It is ZOONOTIC!

People RARELY infested