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Parasitology > Lecture 24: Roundworm disease I > Flashcards

Lecture 24: Roundworm disease I Flashcards

(48 cards)

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1
Q

What is the epidermis of nematodes covered by

A

Cuticle

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2
Q

Nematodes have a ___ with a separate mouth and anus

A

Complete digestive tract

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3
Q

What is the normal life cycle of nematodes

A
  1. 4 juvenile stages (L1-L4)
  2. L1-3 occur in intermediate host
  3. L3-L4 in definitive host
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4
Q

What is the infective stage for nematodes

A

L3

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5
Q

What does monoxenous mean

A

Acquired via ingestion of infective eggs or larvae

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6
Q

What does heteroxenous mean

A

Ingestion of infected intermediate or paratenic host

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7
Q

What species does A. Suum infect and where

A

Swine and SI- cause liver and lung damage

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8
Q

What species does Parascaris equorum infect

A

Horses

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9
Q

What life cycle do ascaridids have

A

Direct life cycle

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10
Q

How are ascaridids spread

A

Fecal oral transmission

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11
Q

Ascaridids undergo what type of migration in DH

A

Hepato-tracheal migration

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12
Q

Describe hepato-tracheal migration

A

liver—> lungs—> respiratory tree—> pharynx—> SI

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13
Q

What symptoms are present in young pigs with A. Suum infection

A

Respiratory signs (can be fatal), diarrhea, weight loss

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14
Q

What symptoms are present in foals with P. Equorum

A

Respiratory signs, weight loss, constipation, colic, diarrhea

Can be fatal

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15
Q

What diagnostic tool can be used to dx A. Suum or P. Equorum

A

Baermann apparatus

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16
Q

Following image is of pig lungs and liver. What parasite caused this

A

A. Suum

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17
Q

What species does T. Canis infect

A

Dogs

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18
Q

T. Canis is common in what dogs (age)

A

Puppies

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19
Q

How does T. Canis spread to puppies

A

Transplacental (usual mode), transmammary

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20
Q

What species does T. Cati infect

21
Q

What age group is T. Cati common in

22
Q

How do kittens get T. Cati

Study These Flashcards
A

ingestion of infective eggs
Can be transmammary if queen is infected late in pregnancy

23
Q

T. Cati can only spread to kittens transmammary under what circumstances

Study These Flashcards
A

Queen is infected late in pregnancy

24
Q

What species does T. Leonina infect

Study These Flashcards
A

Dogs and cats

25
Where is body do toxocara species infect
SI
26
How does dog or cat become infected with T. Leonina
Ingestive of infected eggs or paratenic hosts (rodents)
27
What symptoms are seen in dog with T. Canis
Respiratory signs, poor growth, distended abdomen, vomiting diarrhea, pale MM, intestinal hemorrhage, peritonitis
28
Can T. Canis be fatal
Yes in puppies
29
What signs are seen in kittens with T. Cati
Distended abdomen, diarrhea, ill thrift
30
What signs are seen in adult cats with T. Cati
Enteritis with vomiting
31
Adult cat presented with vomiting, these worms were found in vomit. What parasite is this
T. Cati
32
What zoonotic risk does toxocara species pose
Visceral larva migrans, ocular larva migrans, neurological larva migrans
33
Puppy presented with respiratory signs, diarrhea, distended abdomen, vomiting. The following egg was found in fecal sample. What parasite is this
T. Canis
34
What species does Ascaridia Gali infect and where
SI of Chickens, turkey, geese and wild birds
35
What is the most common roundworm of domestic poultry
A. Galli
36
Where are larvae of A. Galli located
Mucosa of SI
37
Where are adults of A. Galli located
Lumen
38
Chicken presents with decreased appetite, poor growth, drooping wings, pale combs and wattles, anemia, and diarrhea. The following fecal sample was obtained what is the parasite
A. Galli
39
What is the tx for A. Galli
Fenbendazole
40
What species does Heterakis gallinarum infect and where
Cecum of chickens, turkeys and other Galliform birds
41
What is heterakis gallinarum the vector for
Histomonas meleagridis
42
What species does oxyuris equi parasitize and where
Descending small colon, large colon and cecum of equids
43
Where are oxyuris equid eggs typically found
Perianal skin
44
Where are larvae of O. Equi located
Mucosal crypts of colon and cecum
45
Where are adults of O. Equi located
Lumen of cecum and colon
46
How can you Id O. Equi
Cellophane tape test or Perianal region
47
What is used to tx O. Equi
Benzimidazoles
48
Horse presents with Perianal itching, anorexia, restlessness, and nervousness. You perform cellophane tape test and find these eggs. What parasite is this
O. Equi

Parasitology (28 decks)

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