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Parasitology > Unit 2 - Lab > Flashcards

Unit 2 - Lab Flashcards

1
Q

laterally flattened, wingless, and have piercing/sucking mouthparts:

A

fleas

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2
Q

Fleas: complex or simple mouth parts?

A

complex

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3
Q

What is the host preferential like for fleas?

A

have preferences but are not host specific

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4
Q

How do you distinguish C. canis from Ctenophalides felis?

A

C. canis head is more steeply rounded and 1st tooth of genal comb is generally shorter

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5
Q

Most common flea:

A

C. felis

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6
Q

Primary preffered host of Echidnophaga gallinacea:

A

poultry

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7
Q

List three flea species that lack both genal and pronatal combs:

A

Echidnophaga gallinacea, Pulex irritans, Xenopsylla cheopsis

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8
Q

Has an angular head, no genal or pronatal combs:

A

Echidnophaga gallinacea

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9
Q

Where is the E. gallinacea flea most commonly found?

A

South U.S

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10
Q

List the steps of the direct pathology of E. gallinacea in poultry:

A

infest bare areas –> ulcers –> anemia, 2o infections

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11
Q

Primary host of Pulex irritans:

A

mainly humans, swine, (& dogs)

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12
Q

What possible context clue (aside from hosts) can help you distinguish between E. gallinacea and Pulex irritans?

A

E. gallinacea - direct disease (in poultry) P. irritans - minor role in disease transmission

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13
Q

Primary hosts for Xenopsylla cheopsis:

A

rats (main), humans, dogs, other

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14
Q

What disease does Xenopsylla cheopsis transmit?

A

the plague

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15
Q

Where are Xenopsylla flea larvae found?

A

bedding or nests; rarely hosts

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16
Q

What do flea larvae feed on?

A

organic matter (i.e. flea dirt)

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17
Q

Host preferences generally for lice?

A

host-specific

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18
Q

Anoplura

A

sucking louse

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19
Q

Mallophaga

A

chewing/biting louse

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20
Q

Which lice family has a head that is narrower than the thorax?

A

Anoplura

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21
Q

Which lice family has a head that is wider than the thorax?

A

Mallophaga

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22
Q

The short-nosed cattle louse and is considered economically important:

A

Haemotopinus eurysternus

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23
Q

List the sucking lice (Anoplura):

A
  • Haemotopinus eurysternus - Haemotopinus suis - Linognathus spp - Pediculus humanus and Phthirus pubis
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24
Q

How do you tell the difference between Haematopinus and Linognathus since they can both be found on cattle?

A

Haematopinus legs differ in that all the claws are the same size, whereas the first pair of claws on Linognathus are smaller than the other ones.

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25
Q

What is the largest louse of domestic animals that is easily identifiable on pigs?

A

Haematopinus suis

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26
Q

Where are Haematopinus suis eggs laid?

A

on hair

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27
Q

Where are H. suis nits often found?

A

tend to be single, at the base of the hair

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28
Q

What are the important hosts for Linognathus spp.?

A

canids, cattle, sheep, goats

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29
Q

What species of louse is this? Is it an anoplura or mallophaga?

A

Haematopinus suis; Anoplura

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30
Q

What species of louse is this? Is it an Anoplura or Mallophaga?

A

Haematopinus eurysternus; Anoplura

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31
Q

What species of flea is this?

A

Ctenocephalides felis

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32
Q

What species of flea is this?

A

Ctenophalides canis

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33
Q

What species of flea is this?

A

Echidnophaga gallinaceae

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34
Q

What species of flea is this?

A

E. gallinacea

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35
Q

What species of flea is this?

A

Pulex irritans

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36
Q

What species of flea is this?

A

P. irritans

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37
Q

What species of flea is this?

A

Xenopsylla cheopis

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38
Q

What species of flea is this?

A

X. cheopis

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39
Q

What is this?

A

H. suis Nit

40
Q

What species of louse is this? Is it an Anoplura or Mallophaga?

A

Linognathus spp.

41
Q

Has a slender body and subspecies may be specific to the body:

A

Pediculus humanus, Phthirus pubis

42
Q

Infects mainly large animals, including cattle, horses, sheep, and goats:

A

Damalinia

43
Q

List the Mallophaga lice species:

A
  • Damalinia
  • Trichodectes canis
  • Menopon (avian)
44
Q

Where do nits on birds tend to go?

A

Grouped along feather shafts

45
Q

“shaft louse of birds”

A

Menopon spp.

46
Q

Avian species are hosts only to:

A

Mallophagan (biting/chewing) lice!

47
Q

Also remember from lecture that cats are the only domestic mammal host parasitized by:

A

a chewing louse

48
Q

What is the chewing louse species of cats (not shown in lab)?

A

Felicola subrostratus

49
Q

What species of louse is this? Is it an Anoplura or Mallophaga?

A

Pediculus humanus; Anoplura

50
Q

What species of louse is this? Is it an Anoplura or Mallophaga?

A

Phthirus pubis

51
Q

What species of louse is this? Is it an Anoplura or Mallophaga?

A

Damalinia; Mallophaga

52
Q

What species of louse is this? Is it an Anoplura or Mallophaga?

A

Trichodectes canis

53
Q

Have non-functional mouthparts an resemble honey bees:

A

Adult bot flies

54
Q

Creates crater-like lesions produced in the gastric mucosa:

A

G. intestinalis bot flies

55
Q

Most common species of horse bot fly:

A

Gasterophilus intestinalis

56
Q

equine stomach flies

A

gasterophilus spp.

57
Q

cattle grubs; heel flies

A

Hypoderma spp.

58
Q

measure 25-28mm when full grown

A

Hypoderma spp.

59
Q

Why should we treat Hypoderma problems immediately after adult fly activity, and before winter, when louse infestations may warrant louse treatment?

A

Right before larvae move to esophage/spinal cord because toxins from dead/dying larvae will cause adverse reactions in the tissue when combined with ivermectin

60
Q

Large, usually dark, spined, and grub-like

A

Cuterebra spp.

61
Q

Rodent/squirrel bots

A

Cuterebra spp.

62
Q

What happens when Cuterebra get in an accidental host, like cats?

A

can accidentally migrate to the brain

63
Q

Unlike Gasterophilus and Hypoderma, Cuterebra do not lay eggs on this host. Where do they lay them?

A

vegetation/environment

64
Q

What species of louse is this? Is it Anoplura or Mallophaga?

A

Menopon; Mallophaga

65
Q

Adult body of both species is metallic bluish-green and has 3 stripes on the thorax:

A

Cochliomyia homonivorax, Cochliomyia macellaria

66
Q

How do you tell the difference between C. hominovorax and C. macellaria?

A

Middle stripe on C. hominovorax is short, whereas all three stripes on C. macellaria are the same length

67
Q

Which Cochliomyia species is endemic to the U.S.? Non-endemic?

A

Endemic - macellaria

Non-endemic - hominovorax

68
Q

Have an abdomen/thorax that appears metallic, often blue-green to black, with NO stripes

A

blow flies

69
Q

Larvae of blow flies cause what disease?

A

facultative myiasis

70
Q

Stable fly

A

Stomoxys calcitrans

71
Q

House fly

A

Musca domestica

72
Q

Fly with sucking/piercing mouth parts that feed once per day for only a few minutes

A

Stable fly (Stomoxys calcitrans)

73
Q

Have sponging mouthparts and do not bite:

A

House fly (Musca domestica)

74
Q

What diseases are associated with S. calcitrans?

A

Nematode (Habronema microstoma)

75
Q

What diseases are associated with Musca species?

A
  • mechanical (bact and viruses)
  • biological (horse nematodes - Draschia, Habronema)
76
Q

Whose mouthparts are these?

A

Stomoxys calcitrans

77
Q

Whose mouthparts are these?

A

Musca domestica

78
Q

Have piercing/sucking mouthparts like Stomoxys but are much smaller in size:

A

Haemotobia irritans

79
Q

Horn Fly

A

Haemotobia irritans

80
Q

Preferential host for horn flies:

A

cattle

81
Q

Species of fly whose palps are almost are long as its probuscus:

A

H. irritans

82
Q

What’s the main difference in feeding times between the Stable fly and the Horn fly?

A

Stable - feed quickly

Horn - feed for long periods of time

83
Q

Deer fly

A

Chrysops spp.

84
Q

List the mechanical diseases associated with Tabanids:

A
  1. Anthrax
  2. Anaplasmosis
  3. Tularemia
  4. EIA
85
Q

What speices of fly is this?

A

Chrysops spp.

86
Q

What species of fly is this?

A

Tabanid spp.

87
Q

Deer keds/louse flies

A

Lipoptena species

88
Q

Why are Lipoptena sp. also called “louse flies”?

A

dorsoventrally flattened like lice

89
Q

On what hosts, can you typically find deer ked?

A

sheep, deer, and various birds

90
Q

What species of fly is this?

A

Lipoptena (deer ked/louse fly)

91
Q

How should you be able to identify adult male mosquitos?

A

by their bristly antennae

92
Q

Immature stages of mosquitos are:

A

aquatic

93
Q

Females of this mosquito virus are primary vectors for WNV in the U.S.:

A

Culex spp.

94
Q

Mosquito species that may be a vector for various encephalitis viruses and heartworms:

A

Culicine spp.

95
Q
A

Parasitology (13 decks)

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