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Parasitology > Lecture 8: Ticks > Flashcards

Lecture 8: Ticks Flashcards

1
Q

What are the two major tick families of veterinary important

A

Argarsidae and ixodidae

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2
Q

What is the head known as in ticks

A

Gnathosoma or capitulum

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3
Q

What is the basis capitali

A

Near body

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4
Q

What 3 structures make up the mouthparts

A

Chelicerae, hypostome, palps

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5
Q

What are chelicerae

A

Cutting blades for laceration

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6
Q

What is the hypostome

A

Barbed penetrating sucking organ

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7
Q

What are the palps

A

Accessory sensory organ

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8
Q

Identify 1-4

A
  1. Chelicerae
  2. Hypostome
  3. Palps
  4. Basis capituli
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9
Q

What is the body called in ticks

A

Idiosoma

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10
Q

How many legs do ticks have

A

8

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11
Q

What are the respiratory organs openings called

A

Spiracles

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12
Q

What is the scutum

A

Dorsal shield

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13
Q

What are festoons

A

Grooves on the back margin

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14
Q

Ixodidae or argasidae: dorsally visible capitulum (mouth parts)

A

Ixodidae

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15
Q

Ixodidae or argasidae: capitulum visible ventrally

A

Argasidae

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16
Q

Ixodidae or argasidae: scutum and festoons absent

A

Argasidae

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17
Q

Ixodidae or argasidae: scutum or festoons present

A

Ixodidae

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18
Q

Ixodidae or argasidae: eyes present on dorsal side

A

Ixodidae

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19
Q

Ixodidae or argarsidae: eyes present on lateral surfaces

A

Argasidae

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20
Q

Ixodidae or argasidae: long feeding time

A

Ixodidae

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21
Q

Ixodidae or argasidae: short feeding time

A

Argasidae

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22
Q

Ixodidae or argasidae: non-Nidicolous, targets smaller rodents, larger mammals

A

Ixodidae

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23
Q

Ixodidae or argasidae: Nidicolous, target birds, bats and some cattle

A

Argasidae

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24
Q

Ixodidae or argasidae: short lifespan

A

Ixodidae

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25
Q

ixodidae or argasidae: long lifespan

A

Argasidae

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26
Q

Ixodidae or argasidae: 3 basic life stages, single blood meal and moult between stages, female dies after mating

A

Ixodidae

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27
Q

Ixodidae or argasidae: up to as many as 11 stages, multiple blood meals between stages. Female lays many batches of eggs throughout lifespan

A

Argasidae

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28
Q

What is trans ovarian transmission

A

One host ticks can transmit diseases by being passed from adult female tick to her larvae through infection of eggs/ovaries

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29
Q

What is transstadial transmission

A

Two-three host ticks: infection acquired by nymph that then feeds on host, transmitted to host and then adult ticks feed on host

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30
Q

What are the soft ticks

A

Argasidae

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31
Q

What are the 4 genera of veterinary importance in argasidae

A
  1. Argas
  2. Ornithodoros
  3. Otobuis
  4. Carios
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32
Q

Where are Argas spp found in U.S.

A

Gulf of Mexico and Mexican border

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33
Q

What is the host for Argas persicus

A

Domestic fowl and several wild birds

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34
Q

What diseases does Argas transmit

A
  1. Borellia anserina
  2. Aegyptianella pullorum
  3. Tick paralysis
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35
Q

what type of tick is this

A

Argas

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36
Q

What is the host for ornithodoros hermsi

A

Rodents

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37
Q

Where is ornithodoros hermsi found

A

Rocky Mountain and pacific coast

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38
Q

What is the host of ornithodoros coriaceus

A

Deer and cattle

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39
Q

Where is ornithodoros coriaceus found in U.S.

A

California and Oregon

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40
Q

What diseases does ornithodoros transmit

A

Pajaroellobacter abortibovis (epizootic bovine abortions), Borellia spp.

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41
Q

What type of tick is this?

A

Ornithodoros

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42
Q

What type of tick is this

A

Argas

43
Q

What is the spinose ear tick

A

Otobuis megnini

44
Q

What do Otobuis megnini parasitize

A

Ear canals of cattle and horses

45
Q

Which type of argasidae tick is a one host tick

A

Obtains

46
Q

What type of tick is this

A

Otobuis

47
Q

What type of tick is this

A

otobuis

48
Q

What are hard ticks

A

Ixodidae

49
Q

What are the 5 genera of ixodidae ticks of veterinary importance

A

Ixodes, rhipicephalus, dermacentor, amblyomma, haemaphysalis

50
Q

What are 1 host ticks

A

Species that complete both molts without leaving host

51
Q

What are two host ticks

A

Engorged nymphs drop off to molt

52
Q

What are three host ticks

A

Engorged nymph and larvae drop off to molt

53
Q

Ixodes are __host ticks

A

3 host ticks

54
Q

What type of scutum do Ixodes have

A

Inornate

55
Q

Do Ixodes have festoons

A

No

56
Q

What are the two main species of Ixodes

A

Ixodes scapularis and Ixodes pacificus

57
Q

What is the deer tick and black legged tick

A

Ixodes scapularis

58
Q

What is the host of Ixodes scapularis

A

White tailed deer

59
Q

What diseases does Ixodes scapularis transmit

A

Lyme, babesiosis, anaplasma, and powassan virus

60
Q

What is the western black legged tick

A

Ixodes pacificus

61
Q

What is the main host of Ixodes pacificus

A

Lizards and small mammals

62
Q

What diseases does Ixodes pacificus transmit

A

Lyme and anaplasma

63
Q

What type of tick is this and how do you know

A

Ixodes tick
Inornate scutum and long palps

64
Q

What type of scutum does the rhipicephalus have

A

Inornate

65
Q

What type of tick is this based on the basis capitula

A

rhipicephalus- hexagonal basis capitula

66
Q

What is the brown dog tick

A

Rhipicephalus sanguineus

67
Q

Rhipicephalus sanguineus are ___ host ticks

A

3 host ticks

68
Q

What is the main host of rhipicephalus sanguineus

A

Dog

69
Q

What diseases does rhipicephalus sanguineus transmit

A

Bebesia canis (canine piroplasmosis)
Ehrlichia
RMSF

70
Q

What is the cattle tick

A

Rhipicephalus annulatus

71
Q

Rhipicephalus annulatus is a __ host tick

A

1

72
Q

What is the host for rhipicephalus annulatus

A

Domestic animals

73
Q

What diseases does rhipicephalus annulatus transmit

A

Babesia bovis and anaplasma

74
Q

What type of tick is this and how do you know

A

Rhipicephalus
Inornate scutum
Short palps

75
Q

Dermacentor are ___host ticks

A

Three

76
Q

What type of scutum do dermacentor ticks have

A

Ornate

77
Q

What type of tick is this based on the basis capitula

A

dermacentor- rectangular basis capitula

**rhipicephalus have hexagonal

78
Q

What tick is most implicated in causing tick paralysis

A

Dermacentor

79
Q

What is the Rocky Mountain wood tick

A

Dermacentor Andersoni

80
Q

What is the host of dermacentor andersoni

A

Dogs and small mammals

81
Q

What diseases does dermacentor andersoni transmit

A

RMSF, tularemia, Colorado tick fever, tick paralysis, Q fever

82
Q

What is the American dog tick

A

Dermacentor variabilis

83
Q

What is the host of dermacentor variabilis

A

Dogs and other mammals

84
Q

What diseases does dermacentor variabilis transmit

A

RMSF, tularemia, and tick paralysis

85
Q

what type of tick is this and how do you know

A

Dermacentor
Ornate scutum and short palps

86
Q

Amblyomma are __host ticks

A

Three

87
Q

What type of scutum do amblyomma have

A

Ornate

88
Q

What is the lone star tick

A

Amblyomma americanum

89
Q

What is the host for amblyomma americanum

A

White tailed deer

90
Q

What diseases does the Amblyomma americanum transmit

A

**cytauxzoon Felis (fatal Protozoal disease of cat

RMSF, tularemia, Ehrlichia, Q fever

91
Q

What is the gulf coast tick

A

Amblyomma maculatum

92
Q

What is the host for amblyomma maculatum

A

Small rodents, birds and mammals

93
Q

What diseases does amblyomma maculatans transmit

A

** Hepatozoon americanum
Rickettsia parkeri

94
Q

Haemaphysalis is __host ticks

A

Three

95
Q

What type of scutum do haemaphysalis have

A

Inornate

96
Q

What type of tick is this and how do you know

A

Haemaphysalis
Palpi have laterally flared second segment

97
Q

What is the rabbit tick

A

Haemaphysalis leporispalustris

98
Q

What is the host for Haemaphysalis leporispalustris

A

Rabbits

99
Q

What diseases does Haemaphysalis leporispalustris Transmit

A

*Theileria (Protozoal disease of large and small ruminants)
RMSF
Tularemia

100
Q

What is tick toxicosis

A

Ascending paralysis caused by absorption of toxins from saliva of engorging female ticks

101
Q

What is ill thrift-“tick worry”

A

Anemia, painful bites, wounds, secondary infections, myasis, toxin absoprtions

102
Q

How do you diagnose tick infections

A

Clinical signs, direct observation and taxonomic ID

103
Q

What is the treatment for tick infestations `

A

Ascarides

Parasitology (28 decks)

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