Bovine- Musca, Stomoxys, Haematobia and Cochliomyia Flashcards
What are examples of Muscidae?
Musca domestica: house fly
Musca autumnalis: face fly
Stomoxys calcitrans:stablefly, biting housefly
Haematobia irritans: horn fly
What is Musca domestica Common name?
house fly
What is Musca domestica Hosts?
domestic animals and humans
What is Musca domestica Identification?
adults 5.5-7.5 mm
light to dark grey
sticky hairs on pads of legs
mouthparts fleshy adapted to sponging
What is Musca domestica Life cycle?
eggs laid in wet feces or rotting organic material
What is Musca domestica Found?
anywhere on animals and humans
What is Musca domestica Importance?
mechanical vectors of many disease agents
annoyance
What is Musca domestica Life cycle?
potential reproductive capacity is tremendous
One male and one female in 5 months…….
191,010,000,000,000,000,000
What is Musca autumnalis Common name?
face fly
What is Musca autumnalis Preferred location on animal?
secretions on animal face (induce ocular and nasal discharges)
wounds
What is Musca autumnalis Importance?
mechanical vector of infectious bovine keratoconjunctivitis
vector of Thelazia spp. in cattle
extremely annoying to pastured animals
causes reduced production
What is Stomoxys calcitrans Common name?
stablefly,
biting housefly
What is Stomoxys calcitrans Hosts?
most animals and humans
What is Stomoxys calcitrans Identification
adults 5.5-7.5 mm
proboscis rigid, conspicuous and forward projecting
sits on wall head up
What is Stomoxys calcitrans Life cycle?
similar to face fly but prefers decaying organic materials
feeds on blood 1-2 times a day
What is Stomoxys calcitrans Found?
anywhere on cattle
What is Stomoxys calcitrans Pathogenesis, lesions, clinical signs?
attack cattle -- feeding is 3 min which is often interrupted painful bites transmits disease organisms mechanical and biological vector annoyance
What is Musca spp and S. calcitrans Treatment and prevention / Control?
screens sanitation to reduce breeding sites insecticides to manure heaps baits IPM animal treatments (insecticides / repellents)
What is Haematobia irritans Common name?
horn fly
What is Haematobia irritans Hosts?
cattle
What is Haematobia irritans Identification?
adults 4 mm
smallest of bloodsucking muscids
distinguish from stable fly being ½ size and shorter proboscis
What is Haematobia irritans Life cycle?
remain on hosts except when females lay eggs in fresh feces
overwinter (diapause)
What is Haematobia irritans Site(s) of infection?
back, sides and abdomen
cluster around horns when not feeding
What is Haematobia irritans Pathogenesis, lesions, clinical signs?
feed in thousands causes intense irritation impair milk production and weight gains transmit cattle helminths more than 200 flies leads to economic losses
What is Haematobia irritans Treatment and prevention?
apply to host since fly remains on host most of time
insecticide resistance
What is Myiasis?
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)
What is Cutaneous myiasis – “fly strike”?
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
What is Cochliomyia hominivorax Common name?
screwworm
What is Cochliomyia hominivorax Hosts?
livestock
What is Cochliomyia hominivorax Identification?
10 mm, bluish green flies
stripes on thorax
orange brown eyes
What is Cochliomyia hominivorax Life cycle?
larvae feed invasively on living tissue
What is Cochliomyia hominivorax Site(s) of infection?
eggs laid on fresh, uninfected wounds
What is Cochliomyia hominivorax Pathogenesis, lesions, clinical signs?
wounds attract female flies
causes “blowfly strike”
foul smelling lesion
rapidly leads to death of host
What is Cochliomyia hominivorax Diagnosis?
recognition of maggots in lesions
must report to vet authorities immediately
What is Cochliomyia hominivorax Treatment and prevention?
treat wounds
releasing sterile males
