1. Order Ascaridida (F. Ascarididae) Flashcards

1
Q

Species in family Ascarididae

A

[ APT Bpct]

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2
Q

Milk spots

A

Ascaris suis

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3
Q

Summer cold

A

Parascaris equorum

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4
Q

Pot-bellied appearance

A

Toxocara spp.

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5
Q

Acquired immunity increase with age

A

Ascaris suis

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6
Q

Ascaris suis is most prevalent in what age group of pigs?

A

Fatteners
(3-6 months)

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7
Q

Females produce 200,000 eggs per day

A

Ascaris suis

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8
Q

Ascaris suis eggs can remain in ___ environment for 2-4 weeks

A

DRY

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9
Q

Egg shell
• thick
• coarsely mamillated

A

Ascaris suis

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10
Q

Egg
• sperical
• brown
• thick
• pitted shell

A

Parascaris equorum

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11
Q

Egg
• thick
• smooth shell

A

Toxascaris leonina

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12
Q

The egg undergoes embryonation for 2-3 weeks, and needs high moisture & oxygen levels.

A

Ascaris suis

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13
Q

ADULT or LARVAE of A. suis?

  1. pneumonia
  2. hemorrhage
  3. bronchitis
A

LARVAE

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14
Q

ADULT or LARVAE of A. suis?

  1. mechanical blockage
  2. little mucosal damage
  3. icterus (obstruction of bile duct)
A

ADULT

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15
Q

Undergoes larval migration in LIVER causing: acute/chronic multiple interstitial hepatitis

A

Ascaris suis

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16
Q

Its larvated egg is highly resistant to drying & freezing temperature (last up to 15 years)

A

Ascaris suis

17
Q

Affects mainly YOUNG horses

A

Parascaris equorum

18
Q

Parascaris equorum causes this due to large number of larva breaking into lungs:
1. cough
2. fever
3. anorexia

A

Summer cold

19
Q

Distinctly marked in adults of Parascaris equorum

A

LIPS

20
Q

This plays a role in the transmission of Parascaris equorum, by eating feces.

A

Coprophagia

21
Q

What does intestinal worms of Parascaris equorum cause? (3)

A
  1. Catarrhal enteritis
  2. Obstructive impaction
  3. Perforation
22
Q

Which has NO terminal appendage? Which have terminal appendage?

A

NONE — T. leonina
HAVE — T. canis

23
Q

Does larvae of Toxascaris leonina migrate in dogs & cats?

A

NO, does not migrate.

24
Q

Toxascaris leonina is infective within __ week.

A

1 week

25
Q

Which Baylisascaris spp is zoonotic? (1)

A

Baylisascaris procyonis

26
Q

Baylisascaris of skunks

A

B. columnaris

27
Q

Baylisascaris of bears

A

B. transfuga

28
Q

What is Baylisascaris procyonis in racoons & other procyonids?

A

an intestinal parasite

29
Q

Which animal does Baylisascaris procyonis attain sexual maturity?

A

DOGS

30
Q

What does Baylisascaris procyonis cause in humans?

A

Visceral Larva Migrans