Ticks

Question 1

• Soft tick
• One host
• Western US
• Most domestics and people
• Larva and nymphs feed in ear canal, adults lack mouth parts and don’t feed

Answer 1

Otobius megnini

-Spinous ear tick

Question 2

• Soft tick
• Gulf coast and Mexican boarder
• Wild and domestic birds
• Causes annoyance, decreased production, anemia or exsanguination in severe cases
• Can go from egg to adult in 30 days
• Can survive 2 years without blood meal

Answer 2

Argas persicus

Question 3

• Hard tick
• Eastern half of US
• Larvae and nymphs feed on rodents, adults feed on deer, dogs, horses, humans
• Transmits Borrelia burgdorferi–> Lyme disease
• Also vector for Anaplasma phagocytophilium, in dogs and horses
• Always takes several days to feed

Answer 3

Ixodes scapularis

-Deer tick

Question 4

• Hard tick
• Three host
• Pacific coast
• Larvae and nymphs feed on rodents, adults feed on deer, dogs, horses, cattle, humans
• Transmits Borrelia burgdorferi–> Lyme disease
• Also vector for Anaplasma phagocytophilium, in dogs
• Always takes several days to feed

Answer 4

Ixodes pacificus

-Western black legged tick

Question 5

• Hard tick
• Three host tick
• Eastern US
• Adults prefer to feed on large livestock, larvae and nymphs on fox sized animals
• Can cause severe anemia
• Vector for Erlichia chafeensis, and Erlichia ewingii, in dogs; Cytauxzoon felis, in cats, and tuleremia

Answer 5

Amblyomma americanum

-Lone star tick

Question 6

• Hard tick
• Three host tick
• Eastern US
• Adults prefer to feed on large livestock, larvae and nymphs on fox sized animals
• Vector for Hepatozoon americanum

Answer 6

Amblyomma maculatum

-Gulf coast tick

Question 7

• Hard tick
• 3 host tick
• North western US, but not coastal
• Larvae and nymphs feed on rodents, adults feed on larger animals including dogs and humans
• Can cause tick paralysis, transmit Rocky Mountain spotted fever(Rickettsia rickettsi), and tuleremia
• Also vector for Anaplasma marginale in cattle

Answer 7

Dermacentor andersoni

-Rocky mountain wood tick

Question 8

• Hard tick
• 3 host tick
• North western US, but not coastal
• Larvae and nymphs feed on rodents, adults feed on larger animals including dogs and humans
• Can cause tick paralysis, transmit Rocky Mountain spotted fever(Rickettsia rickettsi), and tuleremia

Answer 8

Dermacentor variabilis

-American dog tick

Question 9

• Hard tick
• One host tick
• Moose, other wild ruminants, cattle, horses
• Entire continental US and Alaska
• Massive infestations: causes itching–> hair loss–> white appearance–> ghost moose
• Infestations usually noticed in spring, picked up the infestation wherever animal was previous fall

Answer 9

Dermacentor albipictus

-Winter tick

Question 10

• Hard tick
• Three host tick
• Throughout US
• Cannot over winter in cold, but can survive indoors
• All stages prefer dogs
• Egg to adult in two months
• Adults can survive a year without feeding
• Vector for Erlichia canis, and babesia canis, in dogs

Answer 10

Rhipicephalus sanguineus

-Brown dog tick

Question 11

• Hard tick
• One host tick
• Has been eradicated from US, must be reported
• Prefers large animals, such as cattle
• Vector for Babesia bovis = Texas cattle fever, and Anaplasma marginale by trans ovarial transmission

Answer 11

Rhipicephalus microplus
and
Rhipicephalus annulatus
-American cattle tick