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Parasitology > Canine/Feline- Insects: Cuterebra spp. and lice > Flashcards

Canine/Feline- Insects: Cuterebra spp. and lice Flashcards

1
Q

Examples of Insects

A 
Cuterebra spp.
Culicidae
Lice
Fleas
Reduviidae and Cimicidae
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2
Q

Insect characteristics

A

3 pairs of legs
A head
Distinct thorax and abdomen
Pair of antennae

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3
Q

What is the Importance of flies in veterinary

parasitology?

A

Biological transmission of organisms (eg intermediate hosts of nematodes, protozoa, etc)
Mechanical transmission of organisms
Fly strike
Important to veterinary medicine

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4
Q

Family Oestridae Larvae characteristics

A

obligatory parasites
host specific
(Cuterebra, Hypoderma and Oestrus)

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5
Q

Family Oestridae Adults characteristics

A

large hairy flies
nonfunctional mouthparts
short-lived

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6
Q

What are Cuterebra spp.Common name?

A

Rodent or rabbit bot fly, New World skin bot flies.

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7
Q

What are Cuterebra spp.hosts?

A

Rodents, rabbits, squirrels, chipmunks, mice,
dogs, cats.
Zoonosis

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8
Q

What is Cuterebra spp. Identification?

A

Third stage larva and season

3rd stage larva is dark brown and covered with black spines

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9
Q

What is Cuterebra spp.Site(s) of infection

A

Subcutaneous connective tissue, can locate in

nasal and oral regions and migrate to brain

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10
Q

What is Cuterebra spp. Pathogenesis and lesions?

A

Fibrotic cyst forms from larva in subcutaneous tissue. Larva in brain of cat can lead to
infarction

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11
Q

What is Cuterebra spp. Clinical signs?

A

Lump in neck, fur constantly wet, hole drips fluid

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12
Q

What is Cuterebra spp. Diagnosis?

A

Larva can be removed whole from breathing hole
Type 1 hypersensitivity type reaction
Wound heals slowly

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13
Q

What is Cuterebra spp. Treatment and prevention?

A

Several remedies may protect, but are not approved.

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14
Q

What is Culicidae.Common name?

A

Mosquitoes

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15
Q

What is Culicidae Identification?

A

Pair of wings
long thin legs
long proboscis
long antennae

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16
Q

What is Culicidae Pathogenesis and lesions

A

Transmit many diseases and pathogens

17
Q

What is Suborder Ischnocera (Mallophaga) characteristics?

A

Biting, chewing lice
Wide mandible mouthparts
Feed on skin, hair, feathers, other organic material
3 mm, yellow
Rapid movement to move over skin and covering
Often bird lice

18
Q

What is Trichodectes canis common name?

A

Dog biting louse or canine chewing louse

19
Q

What is Trichodectes canis hosts?

A

Dogs

20
Q

What is Trichodectes canis Identification?

A

Yellowish color,
biting/chewing mouthparts,
active louse,
adults 2 mm

21
Q

What is Trichodectes canis life cycle?

A

Female lays eggs, develop to nymphs and adults.

Require host to complete life cycle

22
Q

What is Trichodectes canis site(s) of infection?

A

Hair, Skin

23
Q

What is Trichodectes canis Pathogenesis and lesions?

A

Vector of D. caninum.
Heavy infestations in neglected and underfed animals.
Affects young

24
Q

What is Trichodectes canis susceptible breed?

A

spaniels

25
Q

What is Trichodectes canis Clinical signs?

A

Pruritus.
Dogs scratch, cause loss of hair.
Restless and scratch continuously.
Anemia can occur

26
Q

What is Trichodectes canis Diagnosis?

A

Identification of louse

27
Q

What is Trichodectes canis Treatment and prevention

A

Avoid direct contact with brushes, combs and blankets

Recent products include MCL

28
Q

What is Suborder Anoplura characteristics?

A 
Bloodsucking lice
more pathogenic
Pointed “noses”
Large, 3-5 mm
Dark blue, depending on amount blood ingested
Slow moving
Clasping hair shaft
Lice of mammals
29
Q

What is Linognathus setosus Host?

A

Dogs

30
Q

What is Linognathus setosus Identification?

A

3-5 mm, head narrower than thorax, sucking mouthparts

31
Q

What is Linognathus setosus Life Cycle?

A

Similar to Trichodectes canis
Female lays eggs, develop to nymphs and adults.
Require host to complete life cycle

32
Q

What is Linognathus setosus Site(s) of infection

A

Skin

33
Q

What is Linognathus setosus Pathogenesis and lesions?

A

Heavy infestation can cause severe anemia

34
Q

What is Linognathus setosus Clinical signs?

A

Loss of body

condition and damage to skin

35
Q

What is Linognathus setosus Diagnosis?

A

Louse identification

36
Q

What is Linognathus setosus Treatment and prevention?

A

Avoid direct contact with brushes, combs and blankets

Recent products include MCL

37
Q

What is Linognathus setosus Common Name?

A

Dog sucking louse

Parasitology (23 decks)

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