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CRG RUSVM Parasit > Insects pt 3 > Flashcards

Insects pt 3 Flashcards

1
Q

Cochliomyia hominivorax common name

A

screwworm

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2
Q

Cochliomyia hominivorax Host

A

Livestock

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3
Q

Cochliomyia hominivorax ID

A
  • 10mm, bluish green flies
  • Three stripes on thorax
  • orange brown eyes
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4
Q

Cochliomyia hominivorax life cycle

A
  • Larvae feed invasively on living tissue

- Adult females mate only once in entire life

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5
Q

Cochliomyia hominivorax site of infection

A
  • eggs laid on fresh

- uninfected wounds

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6
Q

Cochliomyia hominivorax Pathogenesis/lesions/CS

A
  • fresh wound attracts female flies
  • Foul smelling lesion
  • rapidly leads to death of host
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7
Q

Cochliomyia hominivorax Diagnosis

A
  • Recognition of maggots in lesions
  • Must report to vet authorities immediately
  • Place dipteran larvae in alcohol
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8
Q

Cochliomyia hominivorax Treatment and prevention

A
  • treat wounds

- releasing sterile males

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9
Q

Cochliomyia hominivorax Recent development

A
  • 7/13/16 start of outbreak
  • affected: key dear from a wildlife refuge in big pine key FL
  • More than 30 years from the last known outbreak
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10
Q

Sarcophagidae common name

A

Flesh flies

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11
Q

Sarcophagidae host

A

any animal

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12
Q

Sarcophagidae ID

A

-adult 2x the size of houseflies

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13
Q

Sarcophagidae Life cycle

A
  • F lay 1st instars in sores, wounds, necrotic tissue, wool soiled with feces or urine
  • Develop to 3rd instars and leave host to pupate
  • Pupae-overwintering stage
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14
Q

Sarcophagidae sites of infection

A
  • skin

- wool

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15
Q

Sarcophagidae Diagnosis

A

Fly ID

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16
Q

Sarcophagidae treatment and prevention

A
  • prevent situations that attract flies
  • sanitation
  • improved husbandry
  • tail docking
  • treat wounds immediately
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17
Q

Insect: Lice (Phthiraptera) life cycle

A

E-N-N-N-E

  • entire life cycle on host
  • Host specific
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18
Q

Lice (Phthiraptera) suborder Ischnocera (mallophage) morphology

A
  • Biting, chewing lice
  • Head>thorax
  • Feed on skin, hairs, feathers, other organic materials
  • 3mm yellow
  • rapid movement to move over skin and covering
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19
Q

Trichodectes canis common name

A
  • dog biting louse

- canine chewing louse

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20
Q

Trichodectes canis host

A

dog

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21
Q

Trichodectes canis ID

A
  • yellowish color
  • Biting/chewing mouthparts
  • active louse
  • adults 2mm
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22
Q

Trichodectes canis life cycle

A
  • Females lay eggs
  • Develop to nymphs and adults
  • require host to complete life cycle
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23
Q

Trichodectes canis sites of infection

A
  • hair

- skin

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24
Q

Trichodectes canis pathogenesis and lesions:

A
  • vector of D. caninum
  • heavy infestations in neglected and underfed animals
  • affects young
25
Q

Trichodectes canis CS

A
  • Pruritus
  • Dogs scratch
  • cause loss of hair
  • restless and scratch continuously
26
Q

Trichodectes canis Diagnosis

A

ID of louse

27
Q

Trichodectes canis treatment and prevention

A
  • avoid direct contact with brushes, combs and blanlets

- MCL

28
Q

Felicola subrostratus common name

A

cat biting louse

29
Q

Felicola subrostratus host

A

cats

30
Q

Felicola subrostratus ID

A
  • Beige or yellow color
  • Transverse brown bands
  • Triangular anterior portion of the head
  • small legs
  • 1-1.5mm
31
Q

Felicola subrostratus predilection site

A
  • Skin
  • face
  • pinnae
  • back
32
Q

Felicola subrostratus Pathogenesis:

A
  • elderly or chronically ill animals

- Longhaired breeds

33
Q

Felicola subrostratus Diagnosis:

A

Louse ID

34
Q

Damalinia bovis common name

A

cattle biting louse

35
Q

Damalinia bovis hosts

A

cattle

36
Q

Damalinia bovis ID

A
  • typical ischnoceran

- reddish brown color

37
Q

Damalinia bovis site of infection:

A

-head, poll, neck, shoulders, rump, tail switch

38
Q

Damalinia bovis life cycle (favorable season):

A
  • winter favors proliferation
  • Thick coat
  • cattle housed
  • parthenogenesis
39
Q

Damalinia bovis life cycle (non-favorable season)

A
  • In summer louse numbers are low
  • Thin pelage limits sheltered habitat
  • Skin surface temp high
  • Sunlight is leathal
40
Q

Damalinia bovis pathogenesis/lesions/CS

A
  • chronic dermatitis
  • in large numbers intensive irritation and pruritus
  • Sign of malnutrition of chronic disease
41
Q

Damalinia bovis Diagnosis

A

ID of louse

42
Q

Damalinia bovis Treatment and prevention

A
  • various ectoparasiticides

- MCLs

43
Q

Damalinia ovis common name:

A

-Bitting louse of sheep

44
Q

Damalinia ovis host

A
  • sheep

- goats

45
Q

Damalinia ovis ID

A

-typically Ischnoceran

46
Q

Damalinia ovis life cycle

A

typical louse

47
Q

Damalinia ovis site of infestation

A

wool over whole body

48
Q

Damalinia ovis pathogenesis and lesions/CS

A
  • most pathogenic of all sheep lice
  • highly active
  • Lose body condition
  • Damage to fleece
  • Attractant for blow flies
49
Q

Damalinia ovis diagnosis

A

-Louse ID

50
Q

Damalinia ovis treatment and prevention

A

-several remedies effective

51
Q

Damalinia caprae common name

A

red louse

52
Q

Damalinia caprae hosts

A
  • goats

- all others similar to Damalinia ovis

53
Q

Ischnocera (avian lice) common name

A

biting chewing lice

54
Q

Ischnocera (avian lice) hosts

A

Domestic and wild fowl

55
Q

Ischnocera (avian lice) ID

A

> 40 species, typical Ischnoceran

56
Q

Ischnocera (avian lice) site of infestation

A

note common name I.E., wing louse, Fluff louse

57
Q

Ischnocera (avian lice) pathogenesis and lesions/CS

A
  • Lice digest Keratin, bite feathers
  • Effects of pediculosis similar among host species
  • Sleeplessness, inappetence, scratching, feather plucking
  • Secondary effects may be more serious than the immediate damage of lice
58
Q

Ischnocera (avian lice) Diagnosis

A

Identification of louse

CRG RUSVM Parasit (4 decks)

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