Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Ectoparasites > Mites > Flashcards

Mites Flashcards

1
Q

What are the 3 orders of mites?

A

Astigmata, prostigmata and mesostigmata

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 3 families of astigmata mites?

A

Sarcoptidae, knemidokoptidae and psoroptidae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the 2 families of mesostigmata mites?

A

Macronyssidae or dermanyssidae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the 3 families of prostigmata mites?

A

Demodicae, cheyletiellidae and trombiculidae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What species is responsible for feline scabies?

A

Notodores cati

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What species is responsible for sarcoptic mange? Which species suffer from this mite?

A

Sarcoptes scabei.
Dogs - pinnae, elbow and ventrum
Pig - external ear canal and dorsum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why is a biopsy difficult to locate for sarcoptes scabei?

A

Large eggs are found in the epidermis of the skin, and the females burrow into the upper layers of the skin.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the survival off-host and the time of a life cycle of sarcoptes scabei?

A

Survival off-host: 2-3 weeks

Egg -> adult: 17-21 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the clinical signs of sarcoptes scabei?

A 
Intense itching
Inflammation
Hair loss
Self-inflicted wounds
Dried exudate
Death - 2-4 months
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What species is responsible for guinea pig scabies?

A

Trixicarus cavaie

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the species of sarcoptidae?

A

Sarcoptes scabei
Trixicarus cavaie
Notoedres cati

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the species of psoroptidae?

A

Otodectes cynotis
Chorioptes bovis
Psoroptes cuniculi
Psoroptes ovis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the pre-adult period, adult lifespan and off-host survival of psoroptes ovis?

A

Pre-adult period: 10-15 days
Adult lifespan: 20 days
Off-host survival: 16-18 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What control measures are in place against psoroptes ovis?

A 
Dip
Inject
Treat all new arrivals
Check fences and gates
Treat in autumn/Winter
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What disease is caused by psoroptes cuniculi?

A

Ear scab

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the host of psoroptes cuniculi?

A 
Alpaca
Rabbits
Sheep
Goat
Antelope
17
Q

Where can chorioptes bovis be found?

A

Lower legs
Base of tail perineum
Udder

18
Q

What is the host of chorioptes bovis?

A

Camelids
Goats
Horse
Cattle

19
Q

What is the lifecycle and lifetime output of chorioptes bovis?

A

Lifecycle: 3 weeks

Lifetime output: 20 eggs

20
Q

What is the relative pathogenicity of chorioptes bovis in relation to psoroptes?

A

Less pathogenic than psoroptes

21
Q

Where can otodectes cynotis be found?

A

Deep in the ear canals of dogs and cats

22
Q

What is the length of survival and number of eggs produced of otodectes cynotis?

A

Live for: 2-3 weeks

Eggs produced: 15-20

23
Q

What are the species of knemidokoptidae and what diseases are they responsible for?

A

K. gallinae -> depluming itch in birds

K. mutans -> Scaly leg in chickens

24
Q

What is the lifecycle of a demodex mite?

A

18-24 days

25
Q

How is a demodex mite passed between species?

A

Commensal. From the young suckling the dam.

26
Q

Where are demodex mites found?

A

Sebaceous glands and hair follicles.

27
Q

How can the presence of demodex mites be diagnosed?

A

Skin scrapings
Deep skin scrapings.
Hair plucks
Skin biopsy

28
Q

What is the pathogenesis of demodex mites?

A

Follicular epithelium infilitrated with CD3+ & CD8+ t-cells

Decreased Th-1 cell activity, so decreased IL-2 production and it’s receptor.

29
Q

What is the length of survival off-host with cheyletiellidae mites?

A

<10 days

30
Q

What disease is caused by trombiculidae mites?

A

Pruritic skin disease. Due to development of hypersensitivity.

31
Q

Describe the lifecycle of trombiculidae mites.

A

Larvae attaches to host for 3 days and feeds on tissue fluid. Then it falls off to complete it’s lifecycle.

Its is present on vegetation in mid/late summer -> autumn

32
Q

What is the species of Northern Fowl mite?

A

Ornthonyssus sylvarium

33
Q

What is the off-host survival of Ornthonyssus sylvarium?

A

1-3 weeks

34
Q

What is the life cycle on the host of Ornthonyssus sylvarium?

A

5-12 days
Eggs are laid at the base of the feathers.
Only the protonymph and adults feeds.

35
Q

What is the species of red mite?

A

Dermanyssus gallinae

36
Q

What is the off-host survival and lifecyle of dermanyssus gallinae?

A

Off-host survival: 34 weeks

Lifecycle: 7 days, which is off of the host. They feed at night.

37
Q

How are mesostigmata mites managed?

A 
Sprays
Isoazolines
Avoid wild birds
Licenced cleaning products.
Deep clean 
Uncontaminated bedding.
38
Q

What are the clinical signs of mesostigmata mites?

A

Decreased egg production
Death
Severe anaemia
Irritant to the birds

Ectoparasites (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions