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Parasitology > Ticks (Small And Large Animals) > Flashcards

Ticks (Small And Large Animals) Flashcards

1
Q

What is the life cycle of the tick?

A

Egg —> larva —> nymph —> adult

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2
Q

What is the visual difference between the nymph and the adult tick?

A

Genital orifice (small dot on upper back)

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3
Q

Stages of the tick

A
  1. Engorged female
  2. Unfed larva
  3. Fed larva
  4. Unfed lymph
  5. Fed nymph
  6. Unfed adults
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4
Q

What are the 2 families of Ticks?

A
  1. Ioxididae (hard ticks)
  2. Argasidae (soft ticks)
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5
Q

What do Ioxididae (hard ticks) have?

A
  1. Capitulum (mouth): anterior of the body
  2. Scutum: hard shield
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6
Q

How does the scutum differ in males and females?

A

It covers the the whole dorsal side of males
It covers on half of the dorsal in females

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7
Q

What does argasidae (soft ticks) have?

A
  1. Capitulum: not protruding from the body, ventral side
  2. Soft leathery covering
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8
Q

What are the parts of the Capitulum in ticks?

A

Hypostome (teeth)
Chelicera/ae
Basis Capituli

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9
Q

How are ticks classified?

A

Phylum: Arthropoda
Class: arachnada
Order: arthari
Family: argasidae and Ixodidae

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10
Q

What are the common ixodidae (hard) ticks?

A

Dermacentor
Rhipicephalus
Amblyomma
Ixodes

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11
Q

What are the common Argasidae (soft) ticks?

A

Argas
Otobius
Orinthodoros

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12
Q

Dermacentor Variabilis

A

American Dog Tick
East of the Rockies
3 Host tick
Causes rocky mountain spotted fever, tularemia and cyrauzoonosis

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13
Q

Dermacentor Andersoni

A

Rocky Mountain Wood Tick
D: West of the Rockies
3 host tick
Anaplasma marginale (cattle)

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14
Q

Cytauxzoon Felis

A

Pathogenic protozoan for cats transmitted by ticks

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15
Q

Rhicephalus Sanguineus

A

Brown Dog Tick/ Kennel tick
Very common
Distribution: whole U.S.
3 host
Causes Ehrlichiosis, and babeiosis

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16
Q

Amblyomma Americanum

A

Lone star tick
D: Eastern southern U.S. and gulf coast area
3 host tick
Coxella burnetti (Q fever) –> exsaguination
Tularemia, Ehrlichiosis, Star 1, cytauxzoon

17
Q

Ixodes scapularis

A

Black- legged Tick/ Deer Tick
D: Center to e. half of the country
3 host
Lyme disease
Anaplasma phagocytophilum (ruminants, rodents and humans)

18
Q

Ixodes pacificus

A

Deer tick/ western black legged tick
D: west coast, California
3 host
Lyme disease
Anaplasma phagocytophilum (ruminants, rodents and humans)

19
Q

Rhipicephalus (Boophlius) annulatus/ microplus

A

Texas Cattle Fever Tick
D: Mexico- Texas border
1 host (cattle)
Carries babesia bigemina

20
Q

Otobius megnini

A

Spinose Ear Tick
D: SW and E U.S.
1 host soft tick
Inflammation of the ear, rupturing of eardrum in severe cases

21
Q

Argus persicus

A

The Fowl Tick
Southern states (GA, FL, Mexican border)
Multiple host
Borrelia anserine (avian spirochetosis)
Tick paralysis in chickens

22
Q

What are the direct effects of ticks?

A

Lesions
Blood Loss
Tick paralysis

23
Q

Lesions

A

Site for introducing bacteria
Makes the animals susceptible to fly strike
Foreign body reaction

24
Q

Blood loss

A

Exsanguination (animal will bleed out)
Anemia (animal losing blood and becoming weak)

25
Q

Tick Paralysis

A

Amblyomma
Flaccid paralysis (complete paralysis)

26
Q

Dermacentor Nitens

A

Tropical horse tick
D: FL, TX, southeastern area, and Caribbean
1 host tick
Babesia caballi (equine piroplasmosis)

27
Q

What is Tularemia caused by?

A

Francisella tularensis (Amblyomma americanum and Dermacentor variabilis)

28
Q

What is Ehrlichiosis caused by?

A

Ehrlichia canis (Rhipicephalus sanguieus)
E. ewingi and E. chaffensis in (Amblyomma americanum)

29
Q

What is Babeiosis caused by?

A

Babesia canis and B. gibsoni (Rhipicephalus sanguineus)

30
Q

What is Cytauxzoonosis caused by?

A

Cytauxzoon felis (Amblyomma americanum and Dermacentor variabilis)

31
Q

What is lyme disease caused by?

A

Borrelia burgdorferi (ixodes scapularis)

Parasitology (11 decks)

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