Canine/Feline- Introduction to arachnids

Question 1

What are Arachnids- Acari?

Answer 1

Ticks

Mites

Question 2

What is Ticks and Mites Identification?

Answer 2

Nymphs and adults: 4 pairs of legs
Larvae: 3 pairs of legs
Body: cephalo-thorax and abdomen
No antennae, but palps

Question 3

What is Ticks Life cycle?

Answer 3

ELNA
(depends on the Genus and species)
One host
Two hosts
Three hosts
Eggs are laid in the environment

Question 4

What are Hard (Ixodidae) Ticks characteristics?

Answer 4

Chitinous scutum

Can see the mouthparts from the dorsal surface

Question 5

What are Soft (Argasidae) Ticks characteristics?

Answer 5

Cannot see mouthparts from the dorsal surface

Question 6

Rhipicephalus sanguineus

Answer 6

Hexagonal basis capituli

Short palps

Question 7

Dermacentor variabilis

Answer 7

Rectangular basis capituli

Short palps

Question 8

Ixodes dammini

Answer 8

Rectangular basis capituli

Long palps

Question 9

What is Acari (Mites) Identification?

Answer 9

microscopic, less than 1 mm long
body have scales, spines, setae (hairs) useful in identification
legs may have claws or suckers used to attach to host

Question 10

What is Acari (Mites) Different strategies?

Answer 10

burrow into the host’s epidermis (Sarcoptes, Notoedres)•
non burrowing; entirely on the skin surface (Psoroptes, Cheyletiella, Chorioptes)•
restricted to an area of the body (Otodectes)

Question 11

What is Mites Life cycle?

Answer 11

ELNA
NORMALLY all stages on host
NORMALLY do not leave host