Diagnostic Approach to Common Ectoparasites

Question 1

Steps for diagnosis of ectoparasites (5)

Answer 1

Know which parasite(s) you are looking for, based on host species, history, clinical signs
Select appropriate test(s)
Carry out test correctly and take adequate samples from representative areas
Examine the sample systematically to find the parasite
Identify the parasite!

Question 2

Where to take superficial skin scraping for sheep scab

Answer 2

At leading edge of lesion

Question 3

Species name for sheep scab

Answer 3

Psoroptes

Question 4

How often to repeat skin scrapings for canine/feline demodiciosis and how to do

Answer 4

Monthly
Scrape same site each time
Record life stages and proportion alive/dead

Question 5

Sensitivity for skin scraping for sarcoptes

Answer 5

50%

Question 6

How many legs/ body parts do insects have

Answer 6

3 body parts (head, thorax, abdomen)
3 pairs of legs on adult, attached to thorax

Question 7

Hoe many legs/body parts do arachnids have

Answer 7

2 body parts (gnathosoma, idiosoma)
4 pairs of legs on adult attached to idiosoma