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Parasitology > Diptera - cyclorrhapha - Oestridae, muscidae, hippoboscidae > Flashcards

Diptera - cyclorrhapha - Oestridae, muscidae, hippoboscidae Flashcards

1
Q

Bot flies

A

Oestridae

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2
Q

Flies

A

Muscidae

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3
Q

Louse flies

A

Hippoboscidae

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4
Q

Blowflies

A

Calliphoridae

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5
Q

Features of oestridae

A

large vestigial mouth parts - can’t feed lay eggs or viviparous (live young) Parasitic larvae 3 larval stages pupate on ground

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6
Q

Horse bots scientific name 3 species

A

Gasterophilus -intestinalis (common) -nasalis (throat) -haemorrhoidalis (nose - rare)

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7
Q

Features of Gasterophilus intestinalis

A

yellow egg anywhere on front of body hatch when licked

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8
Q

Features of Gasterophilus nasalis

A

pale eggs laid between mandibles hatch spontaneously

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9
Q

features of Gasterophilus haemorrhoidalis

A

black eggs laid around lips hatch spontaneously

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10
Q

Gasterophilus intestinalis instars

A

1st - migrate through mouth and gums 2nd - attach in stomach 3rd - in stomach

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11
Q

Features of Gasterophilus intestinalis larvae

A

red, in stomach, 2 rows of spines

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12
Q

Features of Gasterophilus nasalis larvae

A

yellow, occur in duodenum, 1 row of spines

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13
Q

lifecycle in horse

A

9-12 months passed in faeces pupate in soil

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14
Q

Treatment of Gasterophilus

A

organophosphates (dichlorvos, trichlorphon) macrocyclic lactones (ivermectin, moxidectin)

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15
Q

Control of Gasterophilus

A

treat in winter when flies are absent washing/grooming of little value

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16
Q

What larvae is this?

A

Gasterphilus intestinalis

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17
Q

Nasal bot of sheep and goats

A

Oestrus ovis

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18
Q

Features of Oestrus ovis

A

viviparous (live young)

lay eggs on external nares

larvae crawls into nasal cavity

3rd instar sneezed out

active in summer

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19
Q

Oestrus ovis effects on sheep

A

annoy sheep when laying eggs

chronic nasal discharge

predisposes to pneumonia

20
Q

Treatment of Oestrus ovis

A

organophosphates

macrocyclic lactones

trematocides (rafoxanide, closantel)

21
Q

What is this fly?

A

Hypoderma bovis (warble fly of cattle)

22
Q

Warble flies

A

Hypoderma bovis - Nprthern cattle grub

Hypoderma lineatum - common cattle grub

Not presant in Australia

23
Q
A
24
Q

Lifecycle of hypoderma

A
25
Q

Warble fly of deer and its effects?

A

Hypoderma diana

snow deer

26
Q

Other bots

A
27
Q

housefly

A

musca domestica

28
Q

bush fly

A

Musca vetustissima

29
Q

Muscidae

subfamily Stomoxinae

A

Stomoxys calcitrans - stable fly

Haematobia exigua - buffalo fly

30
Q

House fly significance

A

musca domestica

involved in mechanical transmission of pathogens

intermediate hosts of nematodes and cestodes

can cause nasal scald and fly dermatitis

31
Q

The bush fly significance

A

musca vetustissima

overwinter in northen Australia

cause similar problem to M. domestica

32
Q

The Stable fly

A

Stomoxys calcitrans - breed in decaying organic matter

33
Q

stomoxys calcitrans effect on host

A

both sexes feed on blood

bite anything

34
Q

The buffalo fly

A

Haematobia exigua

introduced from south africa

feed on cattle, buffalo, horses and dogs

35
Q

Haematobia exigua lifecycle features

A

flies remain on host (die if away for 1-2 days)

leave host to lay eggs

breed in cow dung

emerging flies only have 1-2h to find host

need blood meal to breed

adults live 10-20 days

need >20 degees

lifecycle take 7-11 days

36
Q

Spread of haematobia exigua

A

spread on cattle

blow up to 7km in wind

limited distribution due to temp and humidity

37
Q

Haematobia exigua effects on host

A

painful bite

cattle rub to relieve irritation

2000-3000=heavy infection

loss of condition or delayed fattening

decreased milk production

Vector of Trypanosoma evansi and Stephanofilaria sp.

38
Q

Control of haematobia exigua

A

fly traps (funnel trap)

ear tags impregnated with insecticides

insecticides (ivermectin) which persist in dung

dung beetles

*integrate control (reduce reliance on chemicals)

39
Q

What is this?

A

Melophagus ovinus - the sheep ked

40
Q

Hippoboscidae features

A

parasitic (blood feeders)

feet with strong claws

females viviparous

larvae pupate immediately

41
Q

What is this?

A

Hippobosca equina

42
Q

What is this?

A

Ornithomya avicularia

43
Q

Features of melophagus ovinus

A

No wings!

Lives in wool

pupal case attatched to wool

pupae hatch in 19-36 days

live for 4-5 months

44
Q

Melophagus ovinus effect on host

A

blood feeders

cause anaemia

stain wool

transmit Trypanosoma (protozoan)

45
Q
A
46
Q
A

Parasitology (30 decks)

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