Exam II - Amblyomma spp.

Question 1

What is/are the common name(s) for Amblyomma spp?

Answer 1

Lone star tick, gulf coast tick, tropical bont tick, bont tick

Question 2

What is/are the final host(s) for Amblyomma spp?

Answer 2

humans, livestock, dogs, cats

Question 3

Describe the appearance of the Amblyomma americanum adult

Answer 3

Very long palps and hypostome. Ornate scutum, legs have bands of color, eyes and festoons present. A. americanum has a white spot on the scutum (hence its name - the “lonestar tick”)

Question 4

Describe the Amblyomma spp. life cycle

Answer 4

3 host life cycle

Question 5

What is/are the site(s) of infection for Amblyomma spp?

Answer 5

adults prefer head, ears and neck

Question 6

Describe any pathogenesis & clinical signs associated with Amblyomma spp

Answer 6

• long mouthparts = painful bites
• transmit diseases
  
  • rickettsial
  • Hepatozoon americanum by ingestion of A. maculatum

Question 7

Which Amblyomma spp is responsible for transmission of Hepatozoon americanum?

Answer 7

Amblyomma maculatum

Question 8

How would you diagnose Amblyomma spp?

Answer 8

ID the tick

Question 9

Treatment & prevention of Amblyomma spp?

Answer 9

parasiticides are effective, but since it is a 3 host tick, elimination is not really feasible

For lactating dairy cattle, carbamates and organophosphates are applied as sprays or in backrubbers for tick control