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PARASITOLOGY UNIVET > Pro/meso/meta - stigmatid mites > Flashcards

Pro/meso/meta - stigmatid mites Flashcards

1
Q

What are pro/meso/meta stigmatid parasites?

A

Prostigmatid: Demotex, Cheyletiella spp. , Chigger mites

Mesostigmatid: Dermanyssus spp. (red mites)

Metastigmatid: ticks (argasidae and ixodidae)

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2
Q
A

Prostigmatid mite

Demotex

general morphology: elongated body with short legs,

colorless and transparent appearance, striated hind body,

no hairs or plates on body, very short mouthparts

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3
Q
A

Prostigmatid mite

Demotex

cigar like

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4
Q
A

Prostigmatid mite

Demotex - among hair

morphology: cigar like, colourless

SOS

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5
Q
A

Prostigmatid mites

Demotex mite - in dissolved skin scraping

SOS

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6
Q
A

Prostigmatid

Demotex mites

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7
Q
A

Demodicosis of dog

squamous form

like leishamania, pustules, red colour, scratching

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8
Q
A

Demodicosis of dog

squamous form around eye

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9
Q
A

Pododemodicosis - digital parts of legs

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10
Q

Types of demodicosis of dog

A
  1. Localized/squamous form - alopecia, seborrhoea around eye and muzzle
  2. Generalized or pustular form - continuous lesions on body frequently with pyioderma
  3. Pododemodicosis - distal parts of legs

red mange and pyoderma = generalized

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11
Q
A

Demotex - pustular form

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12
Q
A
  1. Red mange
  2. Pyoderma
  3. Pododemodicosis
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13
Q

Types of demodicosis of cat

A
  1. Local and squamous
  2. Genaralized and pustular
  3. Otitis externa - bad smell, wounds on head, itching
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14
Q
A

Demodicosis of cat

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15
Q
A

Prostigmatid mite

Cheyletiella yasguri (for dog)

morphology: 8 legs, 2 big hooks

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16
Q
A

Prostigmatid mite

Cheyletiella yashuri

2 big hooks

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17
Q
A

Prostigmatid mite

Cheyletiella blakei (for cats)

like: lice, hypoderma bovis,gasterophilus

SOS

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18
Q
A

Cheyletiella egg on hair

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19
Q

SOS

Who sticks eggs on the hair?

A
  1. Fly: Gasterophilus - no legs, small mouthpart
  2. Lice - look like adult lice
  3. Cheyletiella - looks like the adult with hooks
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20
Q
A

Prostigmatid mite

Cheyletiella parasitivorax, Ch. furmani - on rabbits

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21
Q
A

Cheyletiella

22
Q
A

Cheyletiella

23
Q
A

Cheyletiella infestation on a puppy

24
Q
A

Mesostigmatid mite

Dermanyssus ( red mite)

25
Q
A

Mesostigmatid mite

Dermanyssus gallinae

moprhology: long chelicarae and 8 long legs

26
Q
A

Mesostigmatid mite

Dermanyssus gallinae

Egg inside the body –> female adult

27
Q
A

Mesostigmatid mite

Dermanyssus gallinae cliical signs

Left: sucking blood: anemia pale breast muscle

Right: normal colour

28
Q
A

Mesostigmatid mite

Dermanyssus gallinae / red mite

29
Q
A

Mesostigmatid mite

Dermanyssus gallinae/ red mites

30
Q
A

Mesostigmatid mite

Dermanyssus galinae/ red mites

31
Q

SOS

2 types of metastigmata - Argas and Ixodida.

What is their difference ?

A

Argasidae - Soft ticks:

1. No plates or shields on body. 2. Feed several times in nymphal and adult stages. 3. During development –> more nymphal stages

Ixodidae - Hard ticks:

1. Hard shield and stiff plates on body. 2. Feed only once in all phases of development. 3. Development –> one nymphal stage occurs

32
Q
A

Metastigmata

Argas persicus

Gen.Morphology: yellowish brown/greyish colour, leathery, capitulum sunk into the vrentral side, no seexual dimorphism

33
Q
A

Metastigmata

Top: Argas vespertilionis

Below: Argas monachus

34
Q
A

Metastigmata

Argas persicus larvae

morphology: long palps, long claws, body with hair

SOS

35
Q
A

Metastigmata

Argas persicus - soft tick

36
Q
A

Soft ticks under wallpaper - live inside the wall

37
Q
A

Argas miniatus on poultry

Anemia, alopecia, transport of bacteria/virus

38
Q

Main features of hard/ Ixodid ticks in genera:

A
  1. Ixodes spp - dark, plain scutum, no eyes
  2. Haemaphysialis spp - lighter, plain scutum, no eyes
  3. Dermacentor spp - multicoloured shield, scutum ornamented, eyes are present
  4. Rhipicephalus spp - brown scutum, eyes are present

*scutum=shield on back, famale has a smaller one

39
Q
A

Ixodidae

Eggs of tick dermacentor deformed by loss of water

40
Q
A

Ixodidae

Hard tick larva (Dermacentor)

Moprhology: larva with 6 legs, long claws, no hair on body, no long palps

41
Q
A

SOS

Hard tick

Haemophysialis sp.

42
Q
A

SOS

Hard tick

Dermacentor reticulatus

43
Q
A

SOS

Hard tick

Dermacentor reticulatus

44
Q
A

SOS

hard tick

Derrmacentor reticulatus

45
Q
A

SOS

Hard tick

Dermacentor - male

46
Q
A

SOS

hard tick

Dermacentor - female

47
Q
A

SOS

Hard tick

Rhipicephalus sp.

48
Q
A

Egg laying females of Dermacentor marginatus ticks

49
Q
A

Tick infections of animals

50
Q
A

Tick infections of animals

51
Q
A

Tick infections of animals

52
Q
A

Lyme disease due to ticks who act as vectors

PARASITOLOGY UNIVET (11 decks)

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