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RUSVM Parasitology > Phthiraptera, Siphonaptera, Hemiptera > Flashcards

Phthiraptera, Siphonaptera, Hemiptera Flashcards

1
Q

What is the life cycle of Phthiraptera (Lice)

A

Egg
3nymph stage
Adult

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2
Q

What are the suborders of Phthiraptera?

A

Ischnocera (Mallophaga)

Anoplura

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3
Q

What are the species of Ischnocera?

A

Trichodectes canis
Felicia subrostrauts
Damalinia bovis
Damalinia ovis

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4
Q

Common name of trichodectes canis?

A

Dog biting louse

Dog chewing louse

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5
Q

What are the features of Ischocera?

A

Biting, chewing lice
Mandible > thorax
Feed on skin, fur, feathers

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6
Q

Host of trichodectes canis?

A

Dog

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7
Q

Life cycle of trichodectes canis

A

Female lay eggs > 3 nymph stages -> adults

Require host to finish life cycle

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8
Q

Site of infestation of trichodectes canis?

A

Hair and skin

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9
Q

Trichodectes canis can vector _______________

A

D. Caninum (dog tapeworm)

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10
Q

Dog
Pruritus
Hair loss due to scratching

A

Trichodectes canis

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11
Q

Treatment of trichodectes canis?

A

avoid contact with brushes, combs, and blankets

MCL

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12
Q

Common name of Felicola subrostratus

A

Cat biting louse

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13
Q

Host of felicola subrostraus

A

Cat

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14
Q

ID

Cat 
Beige/yellow 
Transverse brown bands
Triangular anterior portion of head 
Small legs
A

Felicola subrostraus

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15
Q

Site of infection of felicola subrostraus?

A

Skin, face, pinnate, back

Seen in elderly or chronically ill animals
Long haired breeds

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16
Q

Common name of Damalinia bovis?

A

Cattle biting louse

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17
Q

Host of Damalinia bovis

A

Cattle

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18
Q

Site of infestation of Damalinia bovis?

A

Head, poll, neck, shoulders, rump, tail

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19
Q

What is the life cycle of Damalinia Bovis

A

Winter favors proliferation

  • thick coat
  • cattle housed
  • parthenogenesis

Summer - low numbers

  • thin prelate
  • skin surface temp high
  • sunlight is leathal
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20
Q

What causes chronic dermatitis in cattle, in large numbers intensive causes irritation a pruritius, sign of malnutrition or chronic disease

A

Damalinia bovis

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21
Q

Treatment of Damalinia bovis

A

Ectoparasiticides

MCL

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22
Q

Common name of Damalinia ovis

A

Biting louse of sheep

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23
Q

Host of Damalinia ovis?

A

Sheep and goat

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24
Q

Site of infestation of Damalinia ovis?

A

Wool

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25
Q

What is the most pathogenic lice of sheep causing sheep to lose body condition, damage fleece, and attracts blowflies.

A

Damalinia ovis

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26
Q

What are the characteristics of Anoplura lice ?

A 
Bloodsucking lice (more pathogenic) 
Pointed noses
Head< thorax
Slow moving
Clasping to hair shaft
Lice of mammals
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27
Q

What species belong to the suborder anoplura ?

A

Linognathus spp
Solenopotes spp
Haematopinus spp

28
Q

Common name of Linognathus setosus?

A

Dog sucking louse

29
Q

Host of Linognathus setosus

30
Q

Pathogenesis and clinical signs of Linognathus setosus?

A

Heavy infestation - anemia

Loss of body condition and damage to skin

31
Q

Common name of Linognathus vituli?

A

Long nosed cattle louse

32
Q

Host of Linognathus vituli?

33
Q

Site of infestation of Linognathus vituli ?

A

Dewlap, head, neck

Gregarious -dense isolated clusters

34
Q

Pathogenesis of Linognathus vituli?

A

Heavy infestation- pruritus, anemia, and weakness

Sign of malnutrition or chronic disease

35
Q

Linognathus pedalis and Linognathus ovillus host?

A

Sheep and goat

36
Q

What anopluran lice of sheep is found on the lower region of hindlimbs, scrotum, and belly?

A

Linognathus pedalis

37
Q

What anopluran lice of sheep os found on the face, ears, cheeks, neck, and body of heavy wool breeds?

A

Linognathus ovillus

38
Q

What is the pathogenesis of Linognathus pedalis / Linognathus ovillus?

39
Q

What is the common name of Solenopotes capillatus?

A

Little blue cattle louse

40
Q

Host of Solenopotes capillatus?

41
Q

ID
Cattle
Bluish Louse
1.2-1.5mm

Neck, head, shoulders, dewlap, back and tail

A

Solenopotes capillatus

42
Q

Common name of Haematopinus eurysternus?

A

Short nosed cattle louse

43
Q

Host of Haematopinus eurysternus?

44
Q

ID

Cattle
Dense isolated clusters around head, ears, eyes, and nostrils
Anopluran
Large louse

A

Haematopinus eurysternus

Short nosed cattle louse

45
Q

Pathogenesis of Haematopinus eurysternus ?

A

Anemia

Weight loss

46
Q

Common name of Haematopinus suis?

A

Sucking louse of pigs

47
Q

Host of HAematopinus suis

48
Q

Site of infection of Haematopinus suis

A

Skin folds of neck and jowl
Flanks
Inside of legs

49
Q

Pathogenesis of Haematopinus suis?

A

Heavy infestation - restlessness leading to drop of production
Anemia (rare)
Skin damage from scratching and reduces value of hides

50
Q

What is the most common treatment form anopluran lice?

A

MCL
Ectoparasiticides
Avoiding contact with brushes, combs, blankets

51
Q

What are the species of Siphonaptera?

A

Ctenocephalides felis
Ctenochepalides canis
Echidophagia spp

FLEAS

52
Q

Host of Ctenocepalides felis?

A

Dog and cat

53
Q

Site of infestation of Ctenocephalides felis?

A

Skin, back, ventral abdomen, and inner thighs

54
Q

Pathogenesis of Ctenocephalidies felis?

A

Flea bit allergy or flea allergy dermatitis (FAD)

Vector disease

55
Q

Treatment and prevention of Ctenocephalides felis?

A

Insecticides- usually don’t treat all life stages
breaking life cycle

Environment control

  • vacuum
  • mow lawn and rake clippings/leaves
  • foggers, dusting powders, and sprays
56
Q

Common name of ctenocephalides canis?

57
Q

Host of ctenocephalidies canis?

A

Dog, cat, rat, rabbit, fox, and human

58
Q

Common name of Echidnophaga spp?

A

Sticktight flea

59
Q

Host of Echidnophaga spp?

A

Domestic and wild fowl

60
Q

Site of infection of Echidnophaga spp?

A

Head, comb, wattles, and eyes

61
Q

Pathogenesis and clinical signs of Echidnophaga spp?

A

Irritation
Blood loss
Anemia

62
Q

Common name of Cimex spp?

63
Q

Host of cimex spp?

A

Nesting bird, human, bat

64
Q

Life cycle of Cimex spp?

A

Egg -> nymph (molt 5 times) -> adult
Hide during day
Feed on host at night

Can survive >5months without blood meal

65
Q

Pathogenesis of Cimex spp?

A

Bloodsuckers
Allergic reactions to bites
Massive infestation can lead to blood loss

RUSVM Parasitology (12 decks)

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