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Parasitology > Unit 2 - Diptera > Flashcards

Unit 2 - Diptera Flashcards

1
Q

What are the general characteristics of Diptera?

A
  • true flies “two winged”

- complex metamorphosis

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2
Q

Parasitism by fly larvae that can be termed by tissue location

A

Myiasis

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3
Q

Involves fly species whose larvae are always parasitic (screwworms & botflies); require living host for development:

A

Obligatory myiasis

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4
Q

Larvae can either be free-living or parasitic; opportunistic; have the ability to exploit living tissue:

A

Facultative myiasis

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5
Q

What is the main parasitic stage in a Diptera lifecycle?

A

larvae

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6
Q

Location of G. intestinalis eggs:

A

legs, shoulders

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7
Q

Location of G. nasalis eggs:

A

intermandibular region

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8
Q

Location of G. haemorrhoidalis eggs:

A

lips

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9
Q

Where in the host are Gasterophilus intestinalis larvae (bots) found?

A

nonglandular stomach

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10
Q

Where in the host are Gasterophilus nasalis larvae (bots) found?

A

pylorus and duodenum

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11
Q

Where in the host are Gasterophilus hemorrhaidlis larvae (bots) found?

A

duodenum and rectum

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12
Q

Gasterophilus

A

Horse bots

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13
Q

Pathogenesis of Gasterophilus spp.

A

little path - some stomach rupture, splenic abscess, peritonitis

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14
Q

Diagnosis and treatment of horse bots?

A

remove feces and attached eggs

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15
Q

List some of the common names for Cuterebra:

A

rabbit bots, rabbit warbles, rodent bots

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16
Q

What are some common hosts for Cuterebra spp?

A

rodents, squirrels, rabbits, dogs, cats, etc.

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17
Q

Important point about the Cuterebra life cycle:

A

adults lay eggs in host habitat

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18
Q

Cuterebra pathogenesis:

A

larvae get into fur and enter via natural opening; burrow into SQ

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19
Q

Cattle grubs

A

hypoderma

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20
Q

Common names for adult hypoderma?

A

heel flies, gad flies, warble flies

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21
Q

Common names for Hypoderma larvae?

A

grubs, warbles, wolves

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22
Q

How are Hypoderma lineatum eggs laid on host?

A

in rows on legs

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23
Q

How are Hypoderma bovis eggs laid on host?

A

singly on legs

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24
Q

Where in the host are H. lineatum larvae (grubs) found?

A

esophagus

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25
Where in the host are H. bovis larvae (grubs) found?
spinal cord
26
Hypoderma pathogenesis:
injury when + trying to escape flies; production/value loss
27
Hypoderma tx:
immediately after fly activity stops and with Macrocyclic lactones
28
Sheep nasal fly bot/sheep nose bot/sheep gadfly/sheep botfly/etc.
Oestrus ovis
29
Common host of Oestrus ovis:
sheep
30
Clinical signs of Oestrus ovis:
usually subclinical - sometimes sneezing, nasal discharge, blockage
31
Important point about Oestrus ovis life cycle:
all stages occur in the nasal cavity
32
Tx for this bot fly is typically not necessary:
Oestrus ovis
33
Primary screwworm fly:
Cochliomyia hominovorax
34
Secondary screwworm fly:
Cochliomyia macellaria
35
List some types of blowflies that cause cutaneous myiasis:
1o and 2o blowflies (Phaenicia, Phormia, Lucilia)
36
Common names for face flies (Musca autumnalis):
raven fly, yellow bellies
37
What is the veterinary importance of Musca autumnalis (face flies)?
- can transmit eye worm thelazia | - perform mechanical and biological transmission
38
Major problem in chicken houses, dairy barns, and swine operations
Musca domestica (house flies)
39
Veterinary importance of Musca domestica?
pathogen transmission
40
stable fly, dog fly
Stomoxys
41
horn fly
Haemotobia
42
horse fly
Tabanus
43
deer fly
Chrysops
44
sheep ked
Melophagus
45
deer keds - also attach horses, etc.
Lipoptena
46
horse louse flies
Hippobosca
47
As adults, Muscidae are:
blood feeders
48
Stomoxys site of infection on host:
backs of cows, dairy cattle, dogs, horses, humans
49
Haemotobia site of infection:
beef cattle, horses
50
Stomoxys repro activity?
breed in manure w/ fee
51
Haemotobia repro activity?
breed in manure only
52
Have large eyes ("green heads") and livestock fighting them off may not graze well:
Horse flies (Tabanus)
53
Have banded wings; larvae feed on organic matter in soil:
Deer flies (Chrysops)
54
What's true of the adult flies in the Tabanidae family (Tabanus and Chrysops)?
only adult females are blood feeders
55
Vector for malaria:
anopheline (nonhuman primates, man, birds) and/or culicine (birds)
56
Malaria vertebrate hosts:
birds, nonhuman primates, man
57
Organism for malaria:
plasmodium
58
Organism for heartworm:
D. immitis
59
Vertebrate host for heartworm:
dogs (mainly)
60
Heartworm vectors:
anopheline, culicine
61
Organisms for elephantiasis:
Wuchereria, Brugia
62
Vertebrate host for elephantiasis:
Wuchereria - man | Brugia - man, primates, dog, cats
63
Vectors for elephantiasis:
mosquitos
64
Organism for yellow fever:
virus
65
Vertebrate host for yellow fever:
nonhuman primates and man
66
Vector for yellow fever:
culicine
67
Organisms for equine encephalitides (EEE, WEE, VEE):
virus(es)
68
Vertebrate host for equine encephalitides:
equines, humans, etc.
69
Vector for equine encephalitides:
various
70
Mosquito genera of importance:
Anophelinae, culicinae
71
Mosquito breeding sites:
usually require water
72
Only females are blood feeders; not all are parasitic:
mosquitos
73
Mosquito importance regarding direct disease:
nuisance, allergies, blood loss
74
Mosquito importance regarding indirect disease:
nematodes, viruses, protozooans, etc.
75
Mosquito importance regarding medicine:
#1 vector of human importance
76
Lay egg rafts, standing water breeders/flood water
Culicoides
77
1/2 spp. feed on mammals, 1/2 feed on birds, and some on reptiles and amphibians:
Culicoides
78
Which mosquito species is a vector for heartworm, encephalitis, yellow fever, and chikanguya?
Culicoides
79
Also known as biting midges, biting gnats, etc:
Culicoides
80
Also know as black flies, buffalo gnats, etc:
Simulium
81
small stout-bodies mosquitoes with a hump on their thorax, short antennae, breed in running water, and are known as daytime biters:
Simulium
82
What diseases can Simulium mosquitoes be a vector for?
vesicular stomatitis, onchoceriasis, avian hemosporidians
83
Lutzomyia, Phlebotomus:
sand flies
84
Small, dull-colored, nocturnal mosquitoes that are weak flies:
Lutzomyia, Phlebotomus
85
Vet med importance of Lutzomyia and Phlebotomus?
vesicular stomatitis, Leishmania
86
Kissing Bugs
Trypanasoma cruzi

Parasitology (13 decks)

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