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Parasitology > Lecture 10: Integrated Vet Medicine Review > Flashcards

Lecture 10: Integrated Vet Medicine Review Flashcards

1
Q

What is the Haller’s Organ

A

Sensory organ possessed by hard and soft ticks. Senses humidity, temperature, carbon dioxide and pheromones

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2
Q

Soft or hard ticks:
>2 nymphal stages, fast feeding, multiple hosts, many oviposits

A

Soft

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3
Q

Soft or hard ticks: 1 nymphal stage, slow feeding, feed once, 1-3 hosts, one oviposit

A

Hard

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4
Q

Hard or soft ticks: Nidicolous

A

Soft

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5
Q

Hard or soft ticks: non-Nidicolous

A

Hard

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6
Q

What is the 1 host hard tick life cycle

A

Egg hatches to larvae and larvae attaches to host. Larvae molts to nymph then to adult, feeds and mates then drops off, lays eyes and dies

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7
Q

What two ticks cause bovine babesios

A

Rhipicephalus microplus and rhipicephalus annulatus

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8
Q

What does bovine babesios do to the brain

A

Results in pink brain due to blood vessel distention due to parasitized RBC’s

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9
Q

What is the hard tick life cycle with 2 hosts

A

Egg hatches to larvae, larvae goes to 1st host, feeds and molts to nymph, nymph then drops off to molt to adult

Adult feeds and mates on second host
Drops off, lays eggs and dies

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10
Q

What is the 3 host hard tick life cycle

A

Larvae attaches to first host then drops off to molt into nymph

Nymph feeds on second host then drops off to molt into adult

Adult feeds and mates on second host then falls off lays eggs and dies

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11
Q

What are the important genera of soft (Argasidae) ticks

A

Argas, ornithodoros, and otobuis

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12
Q

What are the important genera of hard (ixodidae) ticks

A

Rhipicephalus, Ixodes, amblyomma, and dermacentor

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13
Q

What is the host for ornithodoros

A

Most mammals

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14
Q

What argasidae has a leathery cuticle and rounder body margin

A

Ornithodoros

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15
Q

What tick spreads epizootic bovine abortion (pajaroellobacter abortibovis)

A

Ornithodoros coriaceus

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16
Q

what type of tick is this

A

Ornithodoros

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17
Q

What ticks cause tick paralysis

A

Dermacentor variabilis, dermacentor andersoni, amblyomma americanum, and Ixodes scapularis

18
Q

Why are ticks good vectors

A

Blood feeders, wide host range, long-lived, few predators, high reproductive potential

19
Q

What tick is a major vector for RMSF, especially in Arizona

A

Rhipicephalus sanguineus (brown dog tick)

20
Q

What tick is a vector for bovine anaplasmosis

A

Dermacentor andersoni

21
Q

What are some clinical signs for bovine anaplasmosis

A

Hemolytic anemia, fever, depression, anorexia

22
Q

What is the vector for Hepatozoon americanum

A

Amblyomma maculatum

23
Q

How can Hepatozoon americanum be transmitted

A

Ingest infected tick, paratenic host

24
Q

What disease and vector cause neutrophilic leukocystosis, periosteal bone proliferation, onion skin cyst, and gamont in WBC

A

Disease: Hepatozoon americanum
Vector: amblyomma maculatum

25
Q

What are the two possible vectors for cytauxzoono Felis

A
  1. Amblyomma americanum
  2. Dermacentor variabilis
26
Q

What is the reservoir species for cytauzoon Felis

A

Bobcat

27
Q

What causes tick paralysis

A

Salivary neurotoxin that inhibits the release of Ach

28
Q

What type of botfly is found in the non-glandular stomach of horses

A

Gasterophilus intestinalis

29
Q

What type of botfly is found in the pylorus/duodenum of horses

A

Gasterophilus nasal is

30
Q

In what type of botfly can cause multifocal cerebral hemorrhage and feline ischemic encephalopathy in cats

A

Cuterebra spp.

31
Q

What is the most common form of cutaneous leishmaniasis in dogs

A

Leishmania infantum

32
Q

What is the vector for Leishmania

A

Sandflies

33
Q

What type of Nematocera are intermediate hosts for heart worm

A

Mosquitoes- anopheles, aedes, and culex

34
Q

What stage of D. Immitis migrates to pulmonary arteries and right heart

A

Adults

35
Q

Who is more susceptible to heartworm, dogs or cats

A

Dogs

36
Q

Are microfilariae more common in cats or dogs

A

Dogs

37
Q

What is the organ of primary concern in dogs with D. Immitis

A

Heart

38
Q

What is the organ of primary concern in cats with D. Immitis

A

Lungs

39
Q

What is the most common ectoparasite of dogs and cats in N. America

A

C. Felis

40
Q

What type of flea is this

A

C. canis

**can differentiate from C. Felis because genial comb is shorter than pronotal comb

In C. Felis they are the same length

41
Q

What type of flea is this

A

C. Felis - genal and pronotal comb are same length

42
Q

What type of mite is this

A

demodex

Parasitology (28 decks)

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