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Parasitology > Bovine- Musca, Stomoxys, Haematobia and Cochliomyia > Flashcards

Bovine- Musca, Stomoxys, Haematobia and Cochliomyia Flashcards

1
Q

What are examples of Muscidae?

A

Musca domestica: house fly
Musca autumnalis: face fly
Stomoxys calcitrans:stablefly, biting housefly
Haematobia irritans: horn fly

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2
Q

What is Musca domestica Common name?

A

house fly

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3
Q

What is Musca domestica Hosts?

A

domestic animals and humans

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4
Q

What is Musca domestica Identification?

A

adults 5.5-7.5 mm
light to dark grey
sticky hairs on pads of legs
mouthparts fleshy adapted to sponging

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5
Q

What is Musca domestica Life cycle?

A

eggs laid in wet feces or rotting organic material

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6
Q

What is Musca domestica Found?

A

anywhere on animals and humans

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7
Q

What is Musca domestica Importance?

A

mechanical vectors of many disease agents

annoyance

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8
Q

What is Musca domestica Life cycle?

A

potential reproductive capacity is tremendous
One male and one female in 5 months…….
191,010,000,000,000,000,000

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9
Q

What is Musca autumnalis Common name?

A

face fly

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10
Q

What is Musca autumnalis Preferred location on animal?

A

secretions on animal face (induce ocular and nasal discharges)
wounds

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11
Q

What is Musca autumnalis Importance?

A

mechanical vector of infectious bovine keratoconjunctivitis
vector of Thelazia spp. in cattle
extremely annoying to pastured animals
causes reduced production

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12
Q

What is Stomoxys calcitrans Common name?

A

stablefly,

biting housefly

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13
Q

What is Stomoxys calcitrans Hosts?

A

most animals and humans

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14
Q

What is Stomoxys calcitrans Identification

A

adults 5.5-7.5 mm
proboscis rigid, conspicuous and forward projecting
sits on wall head up

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15
Q

What is Stomoxys calcitrans Life cycle?

A

similar to face fly but prefers decaying organic materials

feeds on blood 1-2 times a day

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16
Q

What is Stomoxys calcitrans Found?

A

anywhere on cattle

17
Q

What is Stomoxys calcitrans Pathogenesis, lesions, clinical signs?

A 
attack cattle -- feeding is 3 min which is often interrupted
painful bites
transmits disease organisms
mechanical and biological vector
annoyance
18
Q

What is Musca spp and S. calcitrans Treatment and prevention / Control?

A 
screens
sanitation to reduce breeding sites
insecticides to manure heaps
baits
IPM
animal treatments (insecticides / repellents)
19
Q

What is Haematobia irritans Common name?

A

horn fly

20
Q

What is Haematobia irritans Hosts?

A

cattle

21
Q

What is Haematobia irritans Identification?

A

adults 4 mm
smallest of bloodsucking muscids
distinguish from stable fly being ½ size and shorter proboscis

22
Q

What is Haematobia irritans Life cycle?

A

remain on hosts except when females lay eggs in fresh feces

overwinter (diapause)

23
Q

What is Haematobia irritans Site(s) of infection?

A

back, sides and abdomen

cluster around horns when not feeding

24
Q

What is Haematobia irritans Pathogenesis, lesions, clinical signs?

A 
feed in thousands
causes intense irritation
impair milk production and weight gains
transmit cattle helminths
more than 200 flies leads to economic losses
25
Q

What is Haematobia irritans Treatment and prevention?

A

apply to host since fly remains on host most of time

insecticide resistance

26
Q

What is Myiasis?

A

The infestation of living animals with the
larvae of dipteran flies
Facultative: optional (calliphorids)
Obligatory: can not survive without host (oestrids)
Cutaneous (Lucilia)
Nasal (Oestrus)
Somatic (Hypoderma; Cuterebra)

27
Q

What is Cutaneous myiasis – “fly strike”?

A

Maggots causing fly strike belong to Calliphoridae or Sarcophagidae Family
Calliphoridae include the New World screwworm and the Old World screwworm
Calliphoridae are the blow flies
Sarcophagidae are the flesh flies

28
Q

What is Cochliomyia hominivorax Common name?

A

screwworm

29
Q

What is Cochliomyia hominivorax Hosts?

A

livestock

30
Q

What is Cochliomyia hominivorax Identification?

A

10 mm, bluish green flies
stripes on thorax
orange brown eyes

31
Q

What is Cochliomyia hominivorax Life cycle?

A

larvae feed invasively on living tissue

32
Q

What is Cochliomyia hominivorax Site(s) of infection?

A

eggs laid on fresh, uninfected wounds

33
Q

What is Cochliomyia hominivorax Pathogenesis, lesions, clinical signs?

A

wounds attract female flies
causes “blowfly strike”
foul smelling lesion
rapidly leads to death of host

34
Q

What is Cochliomyia hominivorax Diagnosis?

A

recognition of maggots in lesions

must report to vet authorities immediately

35
Q

What is Cochliomyia hominivorax Treatment and prevention?

A

treat wounds

releasing sterile males

Parasitology (23 decks)

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