Lecture 9: Mite infestations Flashcards by Jen McGann

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

Parasitiformes (mesostigmata)

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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

Sarcoptiformes (Astigmata)

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

Trombidiformes (prostigmata)

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What type of mite is this

ornithonyssus (mesostigmatid mite)

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What type of mite is this

Sarcopetes (astigmatid mite)

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What type of mite is this

demodex (prostigmatid mite)

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What are chelicerae

Piercing/sucking mouthparts

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What are chelae

On ends of chelicerae, scissor like structures

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Which type of mite are mainly blood feeders

Mesostigmata

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What is the tarsus

Segment at end of leg

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What is the pretarsus in mesostigmatids

Sucker like membrane associated with tarsal claws at end of leg

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What are tarsal claws

End of legs, double claw

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What is the tarsal like in the astimatid mites

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

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Which type of mite have setae

Astigmatid mites

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What are setae

Elongate sensor hairs

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What type of mite have tubercles

Astigmatid

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What are tubercules

Posterior extensions

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How can you prevent mite infestations

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

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What is a potential treatment for mite infestations

Ascaricides

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What is the life cycle for mites

Egg—> larvae—> nymph—> adult

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How many nymphal stages do most mites have

2-3

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What are the nymphal stages in mites

Protonymph, deutonymph and tritonymph

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How long is the entire life cycle of a mite

3 weeks

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How are mites primarily transmitted

Direct contact from host to host

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What are the blood feeding mites (2)

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

What is the host for ornithonyssus sylvarium

Poultry and wild birds

What is the host for dermanyssus gallinae

Wild and domestic birds

What type of mite is this

Ornithonyssus sylvarium

What type of mite is this

Dermanyssus gallinae

What are the piercing tissue feeding mites (1)

1. Eutrombicula alfreddugsei

What is the common chigger harvest mite

Eutrombicula alfreddugsei

What is the host for Eutrombicula alfreddugsei

Many animal species

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

Eutrombicula alfreddugsei

The __form in the Eutrombicula alfreddugsei Mite is parasitic

Larval

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

Stylostome

What mites reside/feed on surface (6)

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

What is the scab mite

Psoroptes ovis

What is the host for Psoroptes ovis

Primarily sheep, cattle and horses

What is the chorioptic mange mite

Chorioptes bovis

What is the host for Chorioptes bovis

Cattle, horses, sheep, goats and rabbits

What is the sheep itch mite

Psorobia ovis

What is the host for Psorobia ovis

Sheep

What is the cattle itch mite

Psorobia Bos

What is the host for Psorobia bos

Cattle

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

Cheyletiella spp

What is the host for Cheyletiella spp.

Dogs, cats, and rabbits

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

Cheyletiella spp.

What is the cat fur mite

Lynxacarus radovskyi

What is the host for lyxacarus radovskyi

Cats

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

Lynxacarus radovskyi

What type of mite is this

demodex

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

Eutrombicula alfreddugsei

What type of mite is this? Resides and feeds on sheep , cattle and horses Results in skin abrasions

Psoroptes ovis

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

Chorioptes bovis

What type of mite is this? Resides/feeds on sheep

Psorobia ovis

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

Cheyletiella

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

Lynxacarus radovskyi

What is the follicle mite

Demodex

What are the hosts for demodex

Most domestic animals

What mite burrows into hair follicles and sebaceous glands

Demodex

What mites burrow into the skin (3)

1. Sarcoptes scabiei 2. Notoedres cati 3. Knemidocoptes mutans

What are the sarcoptic mange mites

Sarcoptes scabiei

What are the hosts for Sarcoptes scabiei

Most domestic animals

What type of mite is this? Burrows into skin

Sarcoptes scabiei

What is the feline scabies mite

Notoedres cati

What is the host for Notoedres cati

Cats

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

Notoedres cati

What is the scaly leg mite

Knemidocoptes mutans

What is the host for Knemidocoptes mutans

Chickens, turkeys and wild birds

What mite burrows under the superficial epidermis of the feet

Knemidocoptes mutans

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

Knemidocoptes mutans

What mite is this? Burrows into superficial epidermis of feet

Knemidocoptes mutans

What mites reside internally (4)

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

What is the ear mite

Otodectes cynotis

What is the host for Otodectes cynotis

Cats and dogs

What mite commonly causes otitis external

Otodectes cynotis

What is the cattle ear mite

Raillietia auris

What is the host for Raillietia auris

Cattle

What mite is this? Infests cattle ears

Raillietia auris

What is the canine nasal mite

Pneumonyssoides canium

What is the host for Pneumonyssoides canium

Dogs

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

Pneumonyssoides caninum

What is the avian nasal mite

Sternostoma tracheacolum

What are the hosts for Sternostoma tracheacolum

Range of wild and domestic birds

What is the blood sucking mite of the respiratory system

Sternostoma tracheacolum

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

Sternostoma tracheacolum

What mite is this? Resides in canine nasal canal

Pneumonyssoides caninum

What mite is this? Results in respiratory illness in birds

Sternostoma tracheacolum

What is the hay itch mite

Pyemotes tritici

Lecture 9: Mite infestations Flashcards

(89 cards)