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Parasitology > Lecture 22: Tapeworm Disease I > Flashcards

Lecture 22: Tapeworm Disease I Flashcards

1
Q

Where do tapeworms primarily infect

A

Small intestine

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2
Q

What is the scolex

A

Anchoring organ

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3
Q

What is the proglottid

A

Segment containing hermaphroditic reproductive organs, terminal plogottids contain eggs

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4
Q

What is the basic life cycle of tapeworms/cestodes

A
  1. Eggs passed in feces of definitive host
  2. Metacestode- infective stage, develops in 2nd intermediate host
  3. Definitive host ingests intermediate host or paratenic host
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5
Q

What is the infective stage for tapeworms/cestodes

A

Metacestodes

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6
Q

Which intermediate host do metacestodes develop in

A

2nd

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7
Q

Where do Taenia tapeworms infect and what species are infected

A

Adults infect SI of Felids, canids

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8
Q

Passage of proglottids can cause ___

A

Perianal irritation

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9
Q

How do you dx taenia tapeworms

A

Fecal float

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10
Q

What is the intermediate host of taenia tapeworms

A

Prey species of definitive host

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11
Q

What species does Taenia hydatigena infect

A

Dogs

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12
Q

What are the intermediate host for T. Hydatigena

A

Domestic and wild ruminants, swine

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13
Q

How does T. Hydatigena develop in IH

A
  1. Larvae migrates to liver
  2. Then to abdominal cavity where metacestode encysts
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14
Q

What are some signs of heavy acute infections of T. Hydatigena in IH

A

Hepatitis, peritonitis, pneumonia

Fatal in young animals

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15
Q

identify the genus, adult worms primarily infect SI

A

Taenia eggs

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16
Q

How do you dx T. Hydatigena in sheep

A

MRI or US of liver

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17
Q

What is the tx for T. Hydatigena in dogs and sheep

A

Dogs: praziquantel, epsiprantel, fenbendazole
Sheep; praziquantel

18
Q

What species does T. Taeniaeformis infect

A

Cats

19
Q

What is the intermediate host for T. Taeniaeformis

A

Rodents, rabbits

20
Q

Following is SI of barn cat who actively hunted rodents, what parasite was it infected with

A

T. Taeniaeformis

21
Q

What is tx for T. Taeniaeformis

A

Praziquantel, epsiprantel, fenbendazole

22
Q

Abdominal radiograph of a cat with a suspected intestinal impaction shows loops that resemble a “string of pearls” what parasite could this be

A

T. Taeniaeformis

23
Q

What species does T. Pisiformis infect

A

Dogs

24
Q

What is the intermediate host for T. Pisiformis

A

Rabbits, hares, rodents

25
Q

Describe the development/movement of T. Pisiformis in intermediate host

A
  1. Migrates to liver
  2. Encysts in peritoneal membrane
26
Q

What species do Echniococcus tapeworms infect/ where do they infect

A

SI of Dogs and cats

27
Q

What is the intermediate host for Echinococcus tapeworms

A

Prey of definitive host

28
Q

What species does E. Granulosus infect

A

Dogs

29
Q

What is the intermediate host for E. Granulosus

A

Domestic and wild ruminant, pigs, camelids, equids

30
Q

E. Granulosus cause __cyst in liver and lungs

A

Hydatid cyst in liver and lungs

31
Q

What are hydatid cysts

A

Metacestodes that contain protoscolices that can develop onto adult worms

32
Q

What are some some clinical signs of E. Granulosus

A

Liver: abdominal distention, discomfort, ascites, jaundice
Lung: pneumonia, bronchial compression, cough, dyspnea

33
Q

What is present on the liver and lungs? Parasite commonly infects dogs, intermediate host are ruminants, pigs, camelids, and equids

A

hydatid cysts

34
Q

Why is the control of E. Granulosus important in sheep raising regions of the world

A

Zoonotic hydatid disease

35
Q

How do you dx E. Granulosus in dogs

A
  1. Fecal float
36
Q

How do you dx E. Granulosus in sheep

A

US or CT of liver/lungs

37
Q

What is the treatment for E. Granulosus in dogs

A

Dogs: praziquantel and epsiprantel

38
Q

What species does diplyidium caninum primarily infect and where

A

SI of dogs and cats

39
Q

What is the intermediate host of D. Caninum

A

Fleas, chewing lice

40
Q

How does D. Caninum spread from IH to DH

A

Larvae fleas or lice ingest eggs, metacestodes form and cat/dog ingest during grooming

41
Q

Dog presented with flea infestation and fecal showed these eggs. What are they

A

D. Caninum

Parasitology (28 decks)

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