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Animal Parasitology > Exam 5 > Flashcards

Exam 5 Flashcards

1
Q

Piercing stylets

A

Mandibles

Maxillae

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2
Q

Sucking channel

A

Labrum

Hypopharynx

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3
Q

Telmophagic

A

Drinking from a pool of blood

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4
Q

Which insects use cutting and sponging

A

Horsefly

Black fly

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5
Q

Sponging only

A

Housefly

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6
Q

What helps lice digest and reproduce

A

Symbionts in gut

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7
Q

Pediculosis

A

Heavy infestation of lice

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8
Q

What insect isn’t know for being a parasite for any vectors?

A

Chewing lice

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9
Q

Tibio tarsal claws

A

Sucking lice

Help them stay attached when the host is grooming itself

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10
Q

How many in stars do lice have

A

3 instars

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11
Q

Where does Pediculus humanus oviposit

A

Female lays eggs on clothing not body

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12
Q

What is the disease Pediculus humanus causes

A

Vector of epidemic typhus
(Rickettsia prowazekii)
Fever, aches, rash
Incubation 10-14 days

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13
Q

What type of louse is the only one to transmit pathogens?

A

Pediculus humanus

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14
Q

Is having sex the only way to transmit Pthirus pubis

A

No just the most common

Can also get by sharing clothes, towels, a bed or sitting on a couch or toilet seat

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15
Q

How are fleas compressed?

A

Bilaterally

Adaptive to move through hair

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16
Q

Sensilium

A

Pygidium
Host detecting structure
Air movement
Diff in temp

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17
Q

Holometabolous

A

Complete metamorphosis

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18
Q

How do fleas get on their host?

A

Resilin for jumping

Legs used for grappling hooks

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19
Q

How do fleas locate hosts?

What organs are necessary for this

A

Body warmth, air movement, vibrations of substrate, odors, CO2

Eyes, antennae, sensilium

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20
Q

What flea burrows beneath the skin

A

Tunga penetrans

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21
Q

Stick tight flea

A

Echinophaga gallinea

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22
Q

Enzoctic cycle

A

Rats/mice-> fleas
|
V
Humans

Urban plague

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23
Q

Epizootic cycle

A

Fleas- wild rodents
| |
V V
Humans Accidental host

Sylvatic plague

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24
Q

Oriental rat fleas

A

Xenopylla cheopis

Bubonic plague

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25
Q

Proventriculus block

A

Flea takes a blood meal but it can’t get past the block so it has to regurgitate the now contaminated blood. Spreading the bacteria

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26
Q

True bugs

A

Order Hemiptera

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27
Q

Parts of a kissing bug

A

Right behind head is Pronotum and the triangle is the Scutulum

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28
Q

Kissing bug

Family

A

Triatoma infestans

Reduvidae

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29
Q

Flea family

A

Pulicidae

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30
Q

Common bed bug

A

Cimex lectularis

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31
Q

Bed bug family

32
Q

How are bed bugs flattened?

A

Dorsaventrally

33
Q

How do bed bugs mate?

A

Female has Berlese organ opening and the males penis acts as a dagger to penetrate the integument

34
Q

How many instars in bed bug life cycle

35
Q

Sylvatic

A

Nests, burrows of the host

Tend to feed on wild animals

36
Q

Periodonestic

A

Corrals, coops, stables

Feed on domestic animals, livestock

37
Q

Domestic

A

Human dwellings
Triatoma spp.
Rhodinus spp.

38
Q

Kissing bugs vectors for?

A

Chagas’ disease
Trypanosoma cruzi
Trypomastigote- imbibed by bug
Epimastigote- binary fission
Metacyclic trypomastigotes- vertebrate host (infective stage)
Amastigote- in tissue of host (musculature)
Trypomastigote- to bug (circulates in blood)

39
Q

Mosquito family

40
Q

Autogenous

A

First egg batch —> complete development

41
Q

Anautogenous

A

Blood —> nutrients —> egg development

42
Q

Vitellogenin

A

Blood protein provides amino acids

43
Q

How do the diff mosquitos lay their eggs

A

Anopheles/ Culex - directly on water surface
Aedes- above water on damp substrate
Mansonia- underside of leaf

44
Q

Mosquito larva

A

Not buoyant
4 instars
Spicules penetrate surface to breathe

45
Q

Mosquito pupae

A

Respirator trumpets to breathe
Non feeding
Tumblars
Buoyant- air bubbles

46
Q

Endophagic

A

Feed in enclosures

47
Q

Exophagic

A

Will not feed in enclosures

48
Q

Endophilic

A

Stay on the wall to digest

49
Q

Exophilic

A

Prefer to be outside to digest

50
Q

Bird feeding species

A

Culex pipiens

51
Q

Anyhrophagic

A

Feed on humans

52
Q

How do mosquitos feed

A

Solenophagic

Pierce skin and feed from blood vessel

53
Q

Yellow fever

A

Aedes aegypti

54
Q

Yellow fever pathology

A 
Attacks the liver
Parenchymal cell necrosis
Bilirubin (deposited in skin) 
Jaundice 
Systematic toxemia 
Black vomit

(Trans ovarian transmission )

55
Q

Carlos Finley

A

Started study that led to others connecting dots about yellow fever

56
Q

Water reed
Jesse
James carol

A

Research in yellow fever
One died on accidental exposure
One let himself get infected on purpose- James

57
Q

William Gorgas

A

Army
Panama Canal
Help prevent mosquito transmissions

58
Q

Dengue fever

A

Aedes aegypti

59
Q

DHF

A

Dengue hemorrhagic fever

Internal bleeding

60
Q

DSS

A

Dengue shock syndrome
Break bone fever
Causes the most mortality
More children than adults

61
Q

Heart worm parasite genus

A

Dirofilaria

62
Q

Filiriasis parasite genus

A

Wuchereria

63
Q

Malaria parasite genus

A

Plasmodium

64
Q

West Nile virus

A

Flavivirus

65
Q

Eastern and western equine encephalitis

A

Alpha virus

Can kill a horse in a day

66
Q

Family of hard ticks

67
Q

Family of soft ticks

68
Q

Relapsing fever

A

Soft ticks
Borrelia recurentis
Coxal glands - leak excess salt and water from blood feeding

69
Q

Genes organ

A

In females between the capitalism and scutum

Wax like material around eggs prevent drying out

70
Q

How many I stars in hard ticks

71
Q

Soft tick have how many instars

72
Q

What ticks larvae stays on egg and doesn’t take a blood meal

A

Ornithodoros

73
Q

Example of a 1 host tick

A

Boophilus annulatus
Cattle tick
Texas cattle fever- Babesia
Larva- nymph- adult feed on one host

74
Q

Example of 2 host tick

A

Hyalomma
Cattle tick
Larva- nymph one host
Adult different host

75
Q

Example of 3 host tick

A

90% of hard ticks
All stages feed on diff hosts
Best for pathogens
Dercementer, ixodes, Rhipicephalus

76
Q

Nidocolous

A

Soft ticks

Inhabit dwelling of host

Animal Parasitology (6 decks)

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