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2. Parasitology > Stomach Worms Of Dogs And Cats > Flashcards

Stomach Worms Of Dogs And Cats Flashcards

1
Q

What are the stomach worms of dogs and cats?

A

Ollulanus tricuspis
Physaloptera rara
Physaloptera praeputialis
Spirocera lupi
Gnathostoma spinigerum

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2
Q

What are the hosts of Ollulanus tricuspis

A

Cats
Wild felids
Foxes
May occur in pigs and dogs

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3
Q

Characteristics of O. Tricuspis

A

Small , less than 1 mm, not easily seen
Males: bursa @ posterior end
Females: tricuspid @ tip of the tail

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4
Q

What is the prepatent period of O. Tricuspis?

A

1 month

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5
Q

Infective stage of O. Tricuspis

A

Host becomes infected by the ingestion of vomitus containing infective L3 larvae

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6
Q

Lifecycle of O. Tricuspis

A

Direct
L3 larvae develop within the uterus of the adult female worm
Larvae expelled into environment through vomitus or complete lifecycle within the host (autoinfection)

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7
Q

What are the clinical signs of O. Tricuspis

A

Increased production of gastric mucous
Vomiting
Anorexia
Weight loss

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8
Q

How do you diagnose O. Tricuspis

A

Examination of vomitus
Baerman technique
Direct smear
Auto- infection

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9
Q

How do you treat O. Tricuspis

A

Fenbendazole

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10
Q

Characteristics of Physaloptera species

A

3-6 cm, easily seen
Prepuce- like cuticular collar @ the anterior end (male and female)
Caudal alae @ posterior end (male)

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11
Q

What is the prepatent period of Physaloptera species?

A

2-3 months

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12
Q

What are the hosts of Physaloptera species

A

Dogs and cats

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13
Q

What are the intermediate hosts of Physaloptera species?

A

Cockroaches, coprophagous beetles (dung beetle) or paratenic host

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14
Q

Infective stage of Physaloptera species

A

Ingestion of L3 in intermediate host

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15
Q

Why are the clinical signs of Physaloptera species?

A

Gastritis
Ulcers in stomach
Vomiting

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16
Q

How are Physaloptera species treated?

A

Pyramtel pamoate
Fendendazole

17
Q

How do you diagnose Physaloptera species?

A

Larvated eggs shed in feces
Fecal sedimentation most effective

18
Q

Eggs of Physaloptera species

A

Larvated eggs shed in feces
Eggs are oval, thick shelled and transparent

19
Q

Where are spirocerca lupi located?

A

Esophagus and stomach
Immature may be found in aorta

20
Q

Characteristics of spirocerca lupi

A

Seen as nodules on esophagus
Red when alive
5-8 cm

21
Q

What is the prepatent period of spirocerca lupi?

A

5-6 months

22
Q

What are the hosts of spirocerca lupi?

A

Dogs and wild canids

23
Q

T/F: spirocerca lupi have a direct life cycle

A

FALSE

24
Q

What are the intermediate hosts if spirocerca lupi ?

A

Corophagous beetles
Chickens, mice, lizards- paratenic hosts

25
Q

What is the infective stage of spirocerca lupi?

A

Ingestion of L3 larvae in intermediate host

26
Q

Clinical signs of spirocerca lupi

A

Dysphagia and vomiting
Esophageal nodules
Fibrosarcoma/ osteosarcoma
Aortic rupture
Discospindylitis (T5-T10 vertebrae)
Hypertrophic pulmonary osteoarthophathy

27
Q

How do you diagnose spirocerca lupi?

A

Fecal sedimentation
Small, larvated paperclip-like egg

28
Q

What order are spirocerca lupi and Physaloptera found in?

A

Spirocerca

29
Q

How do you treat spirocerca lupi?

A

Surgery to remove nodules
Pyrantel pamoate
Ivermectin

2. Parasitology (11 decks)

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