Bovine Insects Flashcards

1
Q

Musca domestica-Common Name

A

House fly

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2
Q

Musca domestica-Hosts

A

Domestic animals and humans

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3
Q

Musca domestica-Identification

A

Adults: 5.5-7.5 mm, light to dark grey, mouthparts for sponging, fleshy retractable proboscis
Eggs: 1 mm, banana shaped, laid in batches

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4
Q

Musca domestica-Life Cycle

A

ELPA.
Female lays eggs in batches of up to 100 eggs in manure or rotting organic material→ egg hatches into larvae→ pupate→ adult
Length depends on temp

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5
Q

Musca domestica-Site of Infection

A

In houses, barns, stables etc.

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6
Q

Musca domestica-Pathogenesis and Lesions/Clinical Signs

A

Mechanical vectors of disease

Annoyance

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7
Q

Musca domestica-Diagnosis

A

Fly id

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8
Q

Musca domestica-Treatment and Prevention

A

Screens, sanitation to reduce breeding places, insecticides to manure piles

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9
Q

Musca autumnalis-Common Name

A

Face fly

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10
Q

Musca autumnalis-Hosts

A

Domestic animals and humans

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11
Q

Musca autumnalis-Identification

A

Adults: 5.5-7.5 mm, light to dark grey, mouthparts for sponging, fleshy retractable proboscis
Eggs: 1 mm, banana shaped, laid in batches

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12
Q

Musca autumnalis-Life Cycle

A

ELPA.
Female lays eggs in batches of up to 100 eggs in cattle feces→ egg hatches into larvae→ pupate→ adult
Length depends on temp

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13
Q

Musca autumnalis-Site of Infection

A

Animal secretions and wounds on animals face

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14
Q

Musca autumnalis-Pathogenesis and Lesions/Clinical Signs

A

Mechanical vector of infectious bovine keratoconjunctivitis and other disease
Annoyance

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15
Q

Musca autumnalis-Diagnosis

A

Id fly

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16
Q

Musca autumnalis-Treatment and Prevention

A

Screens, sanitation to reduce breeding locations, insecticides

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17
Q

Stomoxys calcitrans-Common Name

A

Stablefly, Biting housefly

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18
Q

Stomoxys calcitrans-Hosts

A

Most animals and humans

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19
Q

Stomoxys calcitrans-Identification

A

Adults: 5.5-7.5mm, proboscis rigid, conspicuous and forward projecting, sits on wall head up
Eggs: 1mm, banana-shaped and creamy white

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20
Q

Stomoxys calcitrans-Life Cycle

A

ELPA.
Female lays eggs in batches of up to 100 eggs in decaying organic material→ egg hatches into larvae→ pupate→ adult
Adult feeds on blood 1-2 times a day
Length depends on temp

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21
Q

Stomoxys calcitrans-Site of Infection

A

General

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22
Q

Stomoxys calcitrans-Pathogenesis and Lesions/Clinical Signs

A

Attack cattle, feeding is 3 mins which is often interrupted.

Painful bites, transmits disease, mechanical and biological vector, annoyance

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23
Q

Stomoxys calcitrans-Diagnosis

A

Id fly

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24
Q

Stomoxys calcitrans-Treatment and Prevention

A

Screens, sanitation to reduce breeding sites, insecticides to manure heaps, baits, IPM, animal treatments (insecticides/repellents)

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25
Q

Haematobia irritans-Common Name

A

Horn fly

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26
Q

Haematobia irritans-Hosts

A

Cattle

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27
Q

Haematobia irritans-Identification

A

Adult: 4mm, smallest blood sucking muscids, distinguished from stable fly bc 1/2 size and shorter proboscis
Egg: 1-1.5mm

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28
Q

Haematobia irritans-Life Cycle

A

ELPA.
Eggs laid in feces→ hatch into larvae→ pupate→ adult
adults remain on hosts
Dependent on temp.

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29
Q

Haematobia irritans-Site of Infection

A

Back, sides and abdomen

Cluster around horns when not feeding

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30
Q

Haematobia irritans-Pathogenesis and Lesions/Clinical Signs

A

Feed in thousands, intense irritation, impair milk production and weight gains, transmit cattle helminths, more than 200 flies leads to economic losses

31
Q

Haematobia irritans-Diagnosis

A

Id fly

32
Q

Haematobia irritans-Treatment and Prevention

A

Apply parasitides to host since fly remains on host most of the time
Some insecticide resistance

33
Q

Cochliomyia hominivorax-Common Name

A

New World Screwworm

34
Q

Cochliomyia hominivorax-Hosts

A

Livestock

35
Q

Cochliomyia hominivorax-Identification

A

Adults: 10mm, metallic-blueish green flies, stripes on thorax, orange brown eyes
L3 darkly pigmented tracheal trunks

36
Q

Cochliomyia hominivorax-Life Cycle

A

ELPA.
Eggs laid on fresh, uninfected wounds of host→ eggs hatch into larvae and feed on tissues→ larvae fall to ground and pupate→ adult

37
Q

Cochliomyia hominivorax-Site of Infection

A

Eggs laid on body opening or edges of fresh, uninfected wounds

38
Q

Cochliomyia hominivorax-Pathogenesis and Lesions/Clinical Signs

A

Wounds attract female flies
Causes “blowfly strike”
Foul smelling lesion
Rapidly leads to death of host

39
Q

Cochliomyia hominivorax-Diagnosis

A

Recognition of maggots in lesions
Must report to vet authorities immediately
Place diptera larvae in alchohol

40
Q

Cochliomyia hominivorax-Treatment and Prevention

A

Treat wounds

Releasing sterilized males eradicated screwworm myiasis from USA, Mexico, Caribbean and Central America

41
Q

Hypoderma bovis/lineatum-Common Name

A

Warble fly, heel fly or ox warble

Larvae: Northern Cattle grub (H. bovis) Common Cattle grub (H. lineatum)

42
Q

Hypoderma bovis/lineatum-Hosts

A

Cattle

*Zoonosis

43
Q

Hypoderma bovis/lineatum-Identification

A

Adults: resemble bees, but 1 pair of wings, yellow-orange hairs on abdomen with broad band of black hairs around middle, no functional mouthparts
L3: barrel shaped, 2.5-3 cm, dirty white and turn dark brown
Eggs: H. bovis-laid singly, H. lineatum-laid in rows of 6 or more

44
Q

Hypoderma bovis/lineatum-Life Cycle

A
ELPA
Egg(s) laid on hairs of legs of cattle→ hatch→ burrow into skin and migrate through tissues→ larvae of H. bovis accumulate in epidural fat of spinal cord, H. lineatum accumulate in submucosa of esophagus→ migrate to subcutaneous tissues of the back→ fall to ground and pupate→ adult
45
Q

Hypoderma bovis/lineatum-Site of Infection

A

Third instars, or “cattle grubs”, found in lumps, or “warbles”, on the backs of cattle in spring

46
Q

Hypoderma bovis/lineatum-Pathogenesis and Lesions

A

L3 under skin cause damage and downgrade carcass→economic loss
H. bovis: toxins from dead larvae leading to paraplegia
H. lineatum: death of larvae in esophageal wall leading to bloat

47
Q

Hypoderma bovis/lineatum-Clinical Signs

A

Faulty regurgitation, bloat

Paraplegia

48
Q

Hypoderma bovis/lineatum-Diagnosis

A

Id fly or larvae

49
Q

Hypoderma bovis/lineatum-Treatment and Prevention

A

MCLs kill early stages, timing of treatment critical

50
Q

Damalinia bovis-Common Name

A

Cattle biting louse

51
Q

Damalinia bovis-Hosts

A

Cattle

52
Q

Damalinia bovis-Identification

A

Adult: 3mm, head relatively larger, small claws, reddish brown with dark transverse bands on abdomen
Eggs/nits: whittish

53
Q

Damalinia bovis-Life Cycle

A

ENNNA
Eggs laid→ devel to nymphs→ 3 molts to adult
Requires host for devel.
Favors winter as heat and sunlight are lethal to louse

54
Q

Damalinia bovis-Site of Infection

A

Top of head, curly hair of poll and forehead, neck, shoulders, back, rump, tail switch

55
Q

Damalinia bovis-Pathogenesis and Lesions/Clinical Signs

A

Chronic dermatitis

In heavy infection, irritation and pruritus

56
Q

Damalinia bovis-Diagnosis

A

Id louse

57
Q

Damalinia bovis-Treatment and Prevention

A

Ectoparasiticides, MCLs

58
Q

Linognathus vituli-Common Name

A

Long nosed cattle louse

59
Q

Linognathus vituli-Hosts

A

Cattle

60
Q

Linognathus vituli-Identification

A

Adults: 3-5mm, small pointed head, slow moving with lg. claws
Eggs/nits: elongate, operculate whitish

61
Q

Linognathus vituli-Life Cycle

A

ENNNA
Eggs laid→ devel to nymphs→ 3 molts to adult
Requires host for devel.
Favors winter as heat and sunlight are lethal to louse

62
Q

Linognathus vituli-Site of Infection

A

Head, neck, dewlap

Gregarious and form dense isolated clusters

63
Q

Linognathus vituli-Pathogenesis and Lesions/Clinical Signs

A

Heavy infestations can lead to pruritus, anemia and weakness

Often a sign of malnutrition or chronic disease

64
Q

Linognathus vituli-Diagnosis

A

Id louse

65
Q

Linognathus vituli-Treatment and Prevention

A

Ectoparasiticides, MCLs

66
Q

Haematopinus eurysternus-Common Name

A

Short nosed cattle louse

67
Q

Haematopinus eurysternus-Hosts

A

Cattle

68
Q

Haematopinus eurysternus-Identification

A

Adults: largest louse of domestic animals, 5mm, yellow or greyish brown
Eggs: hard-shelled, opaque, white

69
Q

Haematopinus eurysternus-Life Cycle

A

ENNNA
Eggs laid→ devel to nymphs→ 3 molts to adult
Requires host for devel.
Favors winter as heat and sunlight are lethal to louse

70
Q

Haematopinus eurysternus-Site of Infection

A

Head, ears, around eyes and nostrils

Gregarious and form dense isolated clusters

71
Q

Haematopinus eurysternus-Pathogenesis and Lesions/Clinical Signs

A

Serious anemia, weight loss

72
Q

Haematopinus eurysternus-Diagnosis

A

Id louse

73
Q

Haematopinus eurysternus-Treatment and Prevention

A

Ectoparasiticides, MCLs