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Parasitology > Flies > Flashcards

Flies Flashcards

1
Q

What are the orders of flies?

A

Trichoptera
Diptera

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2
Q

Life cycles of flies

A

Egg —> larva —> pupa —> adult

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3
Q

General characteristics of Trichoptera

A

2 pairs of wings
3 pairs of legs
Distinct head, thorax, abdomen

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4
Q

How does Trichoptera interact with water?

A

Flies lay eggs near water
Larvae are aquatic

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5
Q

What are a species of trichoptera flies?

A

Caddisflies

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6
Q

How are Caddisflies vectors?

A

Neorickettsia ristici is a vector of Potomac Horse Fever

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7
Q

What are the general characteristics of Diptera?

A

1 pair of wings
3 pairs of legs
1 pair of compound eyes
Distinct head, thorax, and abdomen

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8
Q

How are the mouthparts of Diptera.

A

Piercing, lapping (sponging)m, combination, or non-functional

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9
Q

T/F: metamorphosis is complete in Diptera flies

A

TRUE

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10
Q

Where do flies lay eggs on?

A

Host
Water
Decaying organic marterial
Hairs
Open wounds on skin

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11
Q

In Diptera, what are the 3 main groups of flies?

A

Nematocera
Brachycera
Cyclorrapha

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12
Q

Nematocera

A

Culicidae (mosquitos)
Simulidae (black flies)
Ceratopogonidae (midges)
Psychodidae (Sandflies)

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13
Q

Brachycera

A

Tabanidae (horseflies and deer flies)

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14
Q

Cyclorrapha

A

Muscidae (houseflies)
Hippoboscidae (keds)
Sarcophagidae (flesh flies)
Calliphoridae (blowflies)
Oestridae (botflies)

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15
Q

Diptera flies as vectors

A

Some of these flies are important vectors:
Sandflies transmitting leishmania
Mosquito: transmitting dirofilaria

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16
Q

Myiasis- producing flies

A

Myiasis is the infestation of the organs and tissues of man or animals by fly maggots (larvae)
Any feed on living tissue or dead/necrotic tissue

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17
Q

Obligatory Myiasis

A

Dependent upon host, at least for a certain period of its life

18
Q

Facultative myasis

A

Free- living maggots that adapt themselves to parasitic existence

19
Q

Bot flies in horses

A

Gasterophilus intestinalis Gasterophilus hemorrhoidalis (legs)
Gasterophilus nasalis (throat)

20
Q

Bot flies in Cattle

A

Hypoderma bovis
Hypoderma lineatum

21
Q

Bot flies in Ovine/Caprine

A

Oestrus ovis

22
Q

Bot flies in rabbits

A

Cuterebra

23
Q

Bot flies in deer

A

Cephenemiya

24
Q

What are 5 general characteristics of bot flies in cattle and horses?

A

Nonfunctional mouth parts
Adults are bee-like and short-lived
Larvae located within the host
Pupa located beneath surface of the ground

25
Q

Gasterophilus intestinalis distribution, common name, and egg location

A

Common horse bot
Throughout U.S.
Eggs on forelimbs and shoulders

26
Q

Gasterophilus intestinalis larvae

A

L1 and L2 larvae migrate through tongue and interdental spaces
L3 larvae in stomach (margo plicatus)

27
Q

Gasterophilus nasalis distribution, common name, and egg location

A

Throat bot
Rocky Mountain area of US
Under intermandibular region

28
Q

Gasterophilus nasalis larvae

A

L1 and L2 larvae are in gum
L3 larva in ampulla of duodenum

29
Q

Gasterophilus hemorrhoidalis distribution, common name, and egg location

A

Nose bot
Northern part of the US to VA
around the hairs of the lips

30
Q

Gasterophilus hemorrhoidalis larvae

A

L1 and L2 in mouth
L3 larvae I’m stomach and reattach in the rectum

31
Q

General pathogenesis of Gasterophilus

A

Inflammatory reaction as larvae migrate
Irritation at the site of attachment
May cause colic
Flies annoy host

32
Q

Diagnosis of Gasterophilus

A

Finding eggs on the hairs of forelimbs, shoulders, lips, nasal and Mandibular area
Finding L3 larvae in feces
Endoscopy

33
Q

Treatment of Gasterophilus

A

Macrocyclic lactones
Removal of eggs (fine tooth comb, grooming stone)

34
Q

Hypoderma lineatum

A

Common name: common cattle grub
Distribution: universal
Location of eggs: hair on legs of cattle
Larvae: L1 in esophagus, L2 and L3 in subcutaneous tissue of back

35
Q

General pathogenesis of Hypoderma

A

Inflammatory reaction as larvae migrate
Irritation at the site of migration
Ataxia, paralysis
Bloating (esophagus)
Damage to the hide
Flies annoy the host, causing gadding

36
Q

Hypoderma diagnosis

A

Finding eggs on the hairs of the limbs
Finding warbles in the back

37
Q

Treatment for Hypoderma

A

Macrocyclic lactones

38
Q

Genera characteristics of bot flies in sheep/ goats

A

Nonfunctional mouth parts
Short-lived
Larvae located within the host
Pupa located beneath surface of the ground

39
Q

General pathogenesis of oestrus ovis

A

Irritation of nasal passages
Nasal discharge
Erosion of nasal bones
Migrate to brain
Suffocation
False gid (head pressing)

40
Q

Diagnosis of oestrus ovis

A

Finding larvae in nostrils

41
Q

Treatment of oestrus ovis

A

macrocyclic lactones

Parasitology (11 decks)

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