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Parasitology > Lecture 9: Mite infestations > Flashcards

Lecture 9: Mite infestations Flashcards

1
Q

What order of mites are free living, predatory mites, blood feeders

A

Parasitiformes (mesostigmata)

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2
Q

What order of mites are house dust mites, storage mites, scab/scabies mites, ear mites, fur mites

Live entire life on host

Burrow into epidermis, reside on surface of skin or within ear canal

A

Sarcoptiformes (Astigmata)

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3
Q

What order of mite are chiggers, demodex, follicle mites, itch mites

A

Trombidiformes (prostigmata)

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4
Q

What type of mite is this

A

ornithonyssus (mesostigmatid mite)

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5
Q

What type of mite is this

A

Sarcopetes (astigmatid mite)

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6
Q

What type of mite is this

A

demodex (prostigmatid mite)

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7
Q

What are chelicerae

A

Piercing/sucking mouthparts

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8
Q

What are chelae

A

On ends of chelicerae, scissor like structures

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9
Q

Which type of mite are mainly blood feeders

A

Mesostigmata

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10
Q

What is the tarsus

A

Segment at end of leg

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11
Q

What is the pretarsus in mesostigmatids

A

Sucker like membrane associated with tarsal claws at end of leg

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12
Q

What are tarsal claws

A

End of legs, double claw

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13
Q

What is the tarsal like in the astimatid mites

A

End of some legs, includes pedicel (stalk) and caruncle (sucker)

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14
Q

Which type of mite have setae

A

Astigmatid mites

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15
Q

What are setae

A

Elongate sensor hairs

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16
Q

What type of mite have tubercles

A

Astigmatid

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17
Q

What are tubercules

A

Posterior extensions

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18
Q

How can you prevent mite infestations

A

Clip hair/clean ears
Use medicated shampoos
Regular cleaning of fomites/bedding

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19
Q

What is a potential treatment for mite infestations

A

Ascaricides

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20
Q

What is the life cycle for mites

A

Egg—> larvae—> nymph—> adult

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21
Q

How many nymphal stages do most mites have

A

2-3

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22
Q

What are the nymphal stages in mites

A

Protonymph, deutonymph and tritonymph

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23
Q

How long is the entire life cycle of a mite

A

3 weeks

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24
Q

How are mites primarily transmitted

A

Direct contact from host to host

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25
Q

What are the blood feeding mites (2)

A
  1. Ornithonysus sylvarium (northern fowl mite)
  2. Dermanyssus gallinae (red poultry mite)
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26
Q

What is the host for ornithonyssus sylvarium

A

Poultry and wild birds

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27
Q

What is the host for dermanyssus gallinae

A

Wild and domestic birds

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28
Q

What type of mite is this

A

Ornithonyssus sylvarium

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29
Q

What type of mite is this

A

Dermanyssus gallinae

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30
Q

What are the piercing tissue feeding mites (1)

A
  1. Eutrombicula alfreddugsei
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31
Q

What is the common chigger harvest mite

A

Eutrombicula alfreddugsei

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32
Q

What is the host for Eutrombicula alfreddugsei

A

Many animal species

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33
Q

What mite causes orange crusting dermatosis, intense pruritis, erythema, Papules

A

Eutrombicula alfreddugsei

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34
Q

The __form in the Eutrombicula alfreddugsei Mite is parasitic

A

Larval

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35
Q

When the Eutrombicula alfreddugsei Mite pierces skin it injects saliva that digest host tissue and forms a feeding tube called

A

Stylostome

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36
Q

What mites reside/feed on surface (6)

A
  1. Psoroptes ovis
  2. Chorioptes bovis
  3. Psorobia ovis
  4. Psorobia Bos
  5. Cheyletiella spp
  6. Lynxacarus
37
Q

What is the scab mite

A

Psoroptes ovis

38
Q

What is the host for Psoroptes ovis

A

Primarily sheep, cattle and horses

39
Q

What is the chorioptic mange mite

A

Chorioptes bovis

40
Q

What is the host for Chorioptes bovis

A

Cattle, horses, sheep, goats and rabbits

41
Q

What is the sheep itch mite

A

Psorobia ovis

42
Q

What is the host for Psorobia ovis

43
Q

What is the cattle itch mite

A

Psorobia Bos

44
Q

What is the host for Psorobia bos

45
Q

What is the fur mites, also known as “walking dandruff”

A

Cheyletiella spp

46
Q

What is the host for Cheyletiella spp.

A

Dogs, cats, and rabbits

47
Q

Which external mite that resides and feeds on the surface is highly contagious by direct contact

A

Cheyletiella spp.

48
Q

What is the cat fur mite

A

Lynxacarus radovskyi

49
Q

What is the host for lyxacarus radovskyi

50
Q

What external mite is zoonotic and can cause papular dermatitis in humans

A

Lynxacarus radovskyi

51
Q

What type of mite is this

52
Q

What type of mite is this?
Piercing tissue feeder that causes orange crusting dermatosis

A

Eutrombicula alfreddugsei

53
Q

What type of mite is this?

Resides and feeds on sheep , cattle and horses

Results in skin abrasions

A

Psoroptes ovis

54
Q

What mite is this?
Resides/feeds on cattle, horses, sheep, goats and rabbits

A

Chorioptes bovis

55
Q

What type of mite is this?

Resides/feeds on sheep

A

Psorobia ovis

56
Q

What type of mite is this?
Large and motile, looks like walking dandruff

A

Cheyletiella

57
Q

What type of mite is this?
resides/feeds on cats
Zoonotic causing papular dermatitis in humans

A

Lynxacarus radovskyi

58
Q

What is the follicle mite

59
Q

What are the hosts for demodex

A

Most domestic animals

60
Q

What mite burrows into hair follicles and sebaceous glands

61
Q

What mites burrow into the skin (3)

A
  1. Sarcoptes scabiei
  2. Notoedres cati
  3. Knemidocoptes mutans
62
Q

What are the sarcoptic mange mites

A

Sarcoptes scabiei

63
Q

What are the hosts for Sarcoptes scabiei

A

Most domestic animals

64
Q

What type of mite is this?
Burrows into skin

A

Sarcoptes scabiei

65
Q

What is the feline scabies mite

A

Notoedres cati

66
Q

What is the host for Notoedres cati

67
Q

What type of mite is this?
Burrows into skin of cats

A

Notoedres cati

68
Q

What is the scaly leg mite

A

Knemidocoptes mutans

69
Q

What is the host for Knemidocoptes mutans

A

Chickens, turkeys and wild birds

70
Q

What mite burrows under the superficial epidermis of the feet

A

Knemidocoptes mutans

71
Q

What mite causes inflammation, hyperkeratosis, heavy crusting that can interfere with joint flexion, lameness

A

Knemidocoptes mutans

72
Q

What mite is this?
Burrows into superficial epidermis of feet

A

Knemidocoptes mutans

73
Q

What mites reside internally (4)

A
  1. Otodectes cynotis
  2. Raillietia auras
  3. Pneumonyssoides canium
  4. Sternostoma tracheacolum
74
Q

What is the ear mite

A

Otodectes cynotis

75
Q

What is the host for Otodectes cynotis

A

Cats and dogs

76
Q

What mite commonly causes otitis external

A

Otodectes cynotis

77
Q

What is the cattle ear mite

A

Raillietia auris

78
Q

What is the host for Raillietia auris

79
Q

What mite is this?
Infests cattle ears

A

Raillietia auris

80
Q

What is the canine nasal mite

A

Pneumonyssoides canium

81
Q

What is the host for Pneumonyssoides canium

82
Q

What mite can cause chronic sneezing, epistaxis, nasal itching and discharge

A

Pneumonyssoides caninum

83
Q

What is the avian nasal mite

A

Sternostoma tracheacolum

84
Q

What are the hosts for Sternostoma tracheacolum

A

Range of wild and domestic birds

85
Q

What is the blood sucking mite of the respiratory system

A

Sternostoma tracheacolum

86
Q

What mite can result in chronic respiratory illness, loss of voice, sneezing and shaking of the head

A

Sternostoma tracheacolum

87
Q

What mite is this? Resides in canine nasal canal

A

Pneumonyssoides caninum

88
Q

What mite is this?
Results in respiratory illness in birds

A

Sternostoma tracheacolum

89
Q

What is the hay itch mite

A

Pyemotes tritici

Parasitology (28 decks)

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