Exam II - Rhipicephalus spp.

Question 1

What is the common name for Rhipicephalus spp?

Answer 1

blue tick

Question 2

What is the common name for Rhipicephalus annulatus?

Answer 2

cattle fever tick

Question 3

What is/are the host(s) for Rhipicephalus annulatus?

Answer 3

cattle

Question 4

Describe the Rhipicephalus spp adult

Answer 4

Hexagonal basis capituli. Palps have prominent dorsal ridge and short hypostome. Inornate ticks, eyes present, festoons absent

Question 5

Describe pathogenesis & clinical signs for Rhipicephalus spp

Answer 5

bovine piroplasmosis (Babesia bigemina)* *and gallsickness (Anaplasma marginale)

Question 6

Describe the Rhipicephalus spp life cycle

Answer 6

One host tick. Females lay eggs, develop to larvae which feed and molt to nymphs, and then feed and molt to adults. Adults mate, female lays eggs in secluded places and dies.

Parasitic life cycle requires 20 days

Question 7

How would you diagnose Rhipicephalus spp?

Answer 7

ID the tick

Question 8

Treatment & prevention for Rhipicephalus spp?

Answer 8

parasiticides are effective. This is much easier to control than Amblyomma because Rhipicephalus spp is a 1 host tick.

If lactating dairy cattle, carbamates and organophosphates are applied as sprays or in backrubbers for the control of ticks

Rhipicephalus spp are REPORTABLE ON CATTLE!!! If you see them, submit them to a regulatory vet to determine if cattle need to be quarantined!