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Parasit Exam 3 > Insects 4 > Flashcards

Insects 4 Flashcards

1
Q

Anoplura

A
  • bloodsucking lice, more pathogenic
  • pointed “noses” head < thorax
  • large
  • dark blue, depending on amount of blood ingested
  • slow moving
  • clasping hair shaft
  • lice of mammals
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2
Q

Linognathus setosus

  • common name:
  • host:
A
  • dog sucking louse

- dogs

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3
Q

Linognathus setosus

  • ID
  • LC
A
  • head narrower than thorax, sucking mouthparts

- LC similar to trichodectes canis

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4
Q

Linognathus setosus

  • site of infestation
  • pathogenesis and lesions
A
  • skin

- heavy infestation can cause severe anemia

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5
Q

Linognathus setosus

  • CS
  • Dx
A
  • loss of body condition and damage to skin

- louse ID

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6
Q

Linognathus setosus

-Tx & prevention

A
  • avoid direct contact w/ brushes, combs & blankets

- MCL

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7
Q

Linognathus vituli

  • common name:
  • host:
A
  • long nosed cattle louse

- cattle

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8
Q

Linognathus vituli

-LC

A

-gregarious, forms dense isolated clusters

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9
Q

Linognathus vituli

-site of infestation

A

-dewlap, head, neck

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10
Q

Linognathus vituli

-pathogenesis, lesions, CS

A
  • heavy infestations can lead to pruritus, anemia and weakness
  • often sign of malnutrition or chronic dz
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11
Q

Linognathus vituli

-Tx & prevention

A
  • various extoparasiticides

- MCLs

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12
Q

Linognathus pedalis
Linognathus ovillus
-host

A

sheep and goat

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13
Q

Linognathus pedalis
Linognathus ovillus
-ID

A

-slow moving, blood sucking mouthparts, tan to bluish black in color

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14
Q

Linognathus pedalis
Linognathus ovillus
-site of infestation

A
  • Linognathus pedalis: inhabits the lower region of hind limbs, scrotum, belly
  • Linognathus ovillus: occurs on the face, ears, cheeks, neck, body of heavy wool breeds
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15
Q

Linognathus pedalis
Linognathus ovillus
-pathogenesis, lesions & CS

A

anemia

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16
Q

Solenopotes capillatus

  • common name
  • host
  • predilection site:
A
  • little blue cattle louse
  • cattle
  • neck, head, shoulders, dewlap, back & tail
17
Q

Solenopotes capillatus

  • ID
  • Dx
A
  • bluish, smallest anopluran louse on cattle

- louse ID

18
Q

Haematopinus eurysternus

  • common name
  • host
  • ID
A
  • short nosed cattle louse
  • cattle
  • anopluran, largest louse genus of domestic mammals
19
Q

Haematopinus eurysternus

-site of infestation

A
  • gregarious
  • form isloated dense clusters
  • head, ears, eyes, nostrils
20
Q

Haematopinus eurysternus

-pathogenesis, lesions, CS

A

serious anemia, weight loss

21
Q

Haematopinus eurysternus

  • Dx
  • Tx
A
  • ID louse
  • various ectoparasiticides
  • MCLs
22
Q

Haematopinus suis

  • common name
  • host
A
  • sucking louse of swine

- pigs

23
Q

Haematopinus suis

-site of infestation

A

-skin, folds of neck and jowl, flanks, insides of legs

24
Q

Haematopinus suis

-pathogenesis & lesions & CS

A
  • heavy infestation leads to restlessness which can result in a drop in production
  • anemia seen, but rare
  • skin damage from scratching reduces values of hides
25
Q

Haematopinus suis

  • Dx
  • Tx & prevention
A
  • ID louse

- Macrocyclic lactones effective

26
Q

Ctenocephalides felis

  • host
  • ID
A
  • dogs & cats
  • Egg: oval, pearly white
  • Larva: worm like
  • Pupa: color varies
  • Adult: dark brown, wingless
27
Q

Ctenocephalides felis]

-site of infestation

A

skin, back, ventral abdomen, inner thighs

28
Q

Ctenocephalides felis

-pathogenesis, lesions/CS:

A
  • flea bite allergy or Flea Allergy Dermatitis (FAD)

- Vectors of a wide range of parasitic and infectious agents

29
Q

Ctenocephalides felis

-Dx

A

-fleas, flea feces, blood on host and in bedding

30
Q

Ctenocephalides felis

-Tx & prevention

A
  • requires breaking life cycle in several places
  • insecticides help, but they do not treat all stages of life cycle
  • sentinel, revolution, frontline, capstar
31
Q

Ctenocephalides felis

-environmental control

A
  • vacuum cleaner indispensable for reducing all stages; vacuum frequently where your pet “hangs out”
  • mow lawn and rake clippings/leaves
  • allow treated pet to roam
  • foggers, dusting powders, sprays
32
Q

Ctenocephalides canis

  • common name
  • host
A
  • dog flea
  • dogs, cats, rabbits, rats, foxes, HUMANS
  • very similar to C. felis
33
Q

Echidnophaga

  • common name
  • host
  • ID
A
  • sticktight flea
  • domestic and wild fowl
  • distinctive blunt head, brown-black
34
Q

Echidnophaga

  • site of infestation
  • pathogenesis & lesions/CS
  • Dx
A
  • usually head, comb, wattles, eyes
  • irritation, blood loss, anemia
  • ID flea
35
Q

Cimex

  • host
  • ID
A
  • nesting birds, humans, bats

- mouthparts are beak-like; designed for piercing and bloodsucking

36
Q

Cimex

  • LC
  • Site of infestation
A
  • Eggs -> nymphs - molt 5 times -> adults
  • Hide in crevices by day, feed on hosts at night
  • survive > 5 months w/o bloodmeal
  • skin
37
Q

Cimex

  • Pathogenesis & lesions/CS
  • Dx
A
  • bloodsuckers
  • allergic rxn to bites
  • massive infestation can lead to blood loss
  • ID bug

Parasit Exam 3 (11 decks)

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