Parasitology Test 3 - Ticks

Front 1

Side 2: What are the distinguishing features of soft ticks
Side 3: What are the distinguishing features of hard ticks

Back 1

Leathery body without plates or scutum, ventral gnathostome, feed on multiple hosts

Hint 1

Shield or scutum covers part of female, entire male, anterior gnathostomes, multiple hosts (1, 2, or 3)

Front 2

Side 2: What species is infected by Argas
Side 3: What disease is transferred

Back 2

Birds primarily

Hint 2

Fowl borreliosis (B. anserina)
Tick paralysis (chickens)
Anemia, secondary infection

Front 3

Side 2: What species is infected by Otobius megnini
Side 3: What is the common name

Back 3

Cattle ear canal (may bite other hosts, including man)

Hint 3

Spinose ear tick

Front 4

Side 2: What stages do Otobius megnini go through (which of these stages feed)
SIde 3: What stages do Argas go through

Back 4

Larvae, 2 nymphal stages, adult
Larvae and nymphs

Hint 4

Egg, adult (<30 days)

Front 5

Side 2: What are the reproductive properties of Argas
Side 3: Otobius megnini

Back 5

Lay clutches of 25-100 eggs

Hint 5

Adults mate/drop off - single clutch of eggs

Front 6

Side 2: What is the common name of Amblyomma americanum
Side 3: What disease does it transfer

Back 6

Lone star tick

Hint 6

Cytauzoon
Secondary fly strike, tick paralysis (toxins), tick worry, damage to hides

Front 7

Side 2: What is the common name of Rhipacephalus sanguines
Side 3: What disease does it transfer

Back 7

Brown dog tick

Hint 7

Ehrlichia (transstadial), Babesia canis (transstadial, transovarial)

Front 8

Side 2: What is the common name of Dermacentor variabilis
Side 3: What disease does it transfer

Back 8

American dog tick

Hint 8

Rocky Mountain Spotted Fever (transovarial)
Babesia gibsoni rash = damaged vascular endothelium

Front 9

Side 2: What is the common name of Ixodes scapularis
Side 3: What disease does it transfer

Back 9

Black-legged tick, deer tick

Hint 9

Lyme disease
Babesia microti

Front 10

Side 2: What is the common name of Rhipcephalus evertsi
Side 3: What disease does it transfer

Back 10

Red-legged tick

Hint 10

Bovine/equine babesia, Theileria Heartwater (Cowdria ruminantium)

Front 11

Side 2: What diseases are spread by Rhipicephalus (Boophilus) annulatus
Side 3: How are these diseases transmitted

Back 11

Bovine babesiosis, anaplasmosis

Hint 11

Transovarially

Front 12

Side 2: What is the life cycle of 3 host hard ticks
Side 3: What are larvae referred to as

Back 12

Larvae on host 1 (small mammal) - feed, drop, molt
Nymph on host 2 (small mammal) - feed, drop molt
Adult on host 3 - mate, feed, drop off
Eggs laid on ground to hatch into larvae

Hint 12

Seed ticks

Front 13

What is the most common tick on dogs in NC

Back 13

Amblyomma americanum (lone star tick)

Front 14

What are the replicative properties of Rhipacephalus sanguineus (brown dog tick)

Back 14

Egg-egg in 1 month
Can breed indoors (indoor kennels)

Front 15

What are the replicative properties of Dermacentor variabilis (american dog tick)

Back 15

7-10 d incubation
Tick must be on you for 24 hours

Front 16

What hard ticks are considered 3-host ticks

Back 16

Amblyomma americanum (lone star tick)
Rhipacephalus sanguineus (brown dog tick)
Dermacentor variabilis (american dog tick)
Ixodes scapularis (black-legged tick, deer tick)

Front 17

Side 2: What hard ticks are considered 2-host ticks
Side 3: What is the lifecycle

Back 17

Rhipicephalus evertsi

Hint 17

Larvae and nymph feed on same host, adult feeds on second host

Front 18

Side 2: What hard ticks are considered 1-host ticks
Side 3: What is the lifecycle

Back 18

Rhipicephalus (Boophilus) annulatus

Hint 18

All stages feed on 1 host, adult female drops off and lays eggs