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Parasitology I > Trematodes > Flashcards

Trematodes Flashcards

1
Q

What are the normal IH for trematodes?

A

Molluscs (snails and slugs)

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2
Q

DH for fasciola hepatica?

A

Sheep, cattle, goats and other ruminants

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3
Q

IH for Fasciola hepatica?

A

Aquatic snails

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4
Q

Adult fasciola hepatica site of infection?

A

Bile ducts

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5
Q

Immature Fasciola hepatica site of infection?

A

They migrate throughout the liver parenchyma

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6
Q

What stage of Fasciola hepatica does the IH ingest?

A

Miracidia

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7
Q

What stage of Fasciola hepatica is infective to the DH?

A

Metacercariae

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8
Q

DH of Fascioloides magna?

A

Primarily white-tailed deer, also elk, and moose

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9
Q

IH of Fascioloides magna?

A

Aquatic snails

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10
Q

Adult Fascioloides magna site of infection in DH?

A

Cysts in the liver parenchyma

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11
Q

Immature Fascioloides magna site of infection in the IH?

A

They migrate through the liver

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12
Q

Paramphistomum cervi DH?

A

Domestic and wild ruminants throughout the world

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13
Q

IH of Paramphistomum cervi?

A

Aquatic snails

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14
Q

What stage of Paramphistomum cervi is infective to the DH?

A

Metacercariae

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15
Q

DH of Nanophyetus salmincola?

A

Piscivorous (fish-eating) mammals

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16
Q

IH of Nanophyetus salmincola?

A

1st: aquatic snail
2nd: Fish

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17
Q

Nanophyetus salmincola adult site of infection?

A

Small intestine

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18
Q

What stage of Nanophyetus salmincola is ingested by the snail?

A

Miracidium

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19
Q

What stage of Nanophyetus salmincola is ingested by fish?

A

Cercaria

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20
Q

DH for Paragonimus kellicotti?

A

Dogs, cats, wild carnivores

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21
Q

IH for Paragonimus kellicotti?

A 
First = aquatic snail
Second = crayfish
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22
Q

DH adult site of infection of Paragonimus kellicotti?

A

Lung parenchyma

23
Q

What stage of Paragonimus kellicotti is infective to the snails?

A

Miracidia

24
Q

What stage of Paragonimus kellicotti are infective to crayfish?

A

Cercariae

25
Q

What stage of Paragonimus kellicotti is infective to DH?

A

Metacercariae

26
Q

What is the PPP for Paragonimus kellicotti?

A

4-5 weeks for dogs

10 weeks for cats

27
Q

DH for Dicrocoelium dentriticum?

A

Sheep, cattle, goats, and other mammals

28
Q

IH for Dicrocoelium dentriticum?

A 
1st = terrestrial snail
2nd = Ant
29
Q

What is the site of infection of adult Dicrocoelium dentriticum in the DH?

A

Bile ducts and gall bladder

30
Q

What stage of Dicrocoelium dentriticum is infective to snails?

A

Embryonated eggs

31
Q

What stage of Dicrocoelium dentriticum is infective to ants?

A

Cercariae

32
Q

What stage of Dicrocoelium dentriticum is infective to DH?

A

Metacercariae

33
Q

What is the PPP for Dicrocoelium dentriticum?

A

11-12 weeks

34
Q

DH of Platynosomum illiciens?

A

Cats, wild mammals and birds

35
Q

IH of Platynosomum illiciens?

A 
1st = terrestrial snail
2nd = terrestrial isopod (roly polys)
36
Q

PH of Platynosomum illiciens?

A

Lizards, et al. reptiles and amphibians

37
Q

Platynosomum illiciens adult site of infection in the DH?

A

Gall bladder and bile ducts

38
Q

What stage of Platynosomum illiciens is infective to snails?

A

Eggs containing miracidia

39
Q

What stage of Platynosomum illiciens are infective to the DH?

A

Metacercariae

40
Q

PPP of Platynosomum illiciens?

A

2-3 months

41
Q

DH of alaria?

A

dogs, cats, and other carnivores

42
Q

IH of alaria?

A

Aquatic snails and tadpoles

43
Q

PH of alaria?

A

frogs, snakes, mouse, rats, birds, other small mammals and reptiles

44
Q

Adult site of infection in the DH for alaria?

A

Small intestines

45
Q

Immature fluke site of infection in the IH for alaria?

A

Immature flukes in the lungs

46
Q

What stage of alaria is infective to the DH?

A

Mesocercaria

47
Q

DH of Heterobilharzia americana?

A

Dogs, raccoons and bobcats

48
Q

IH of Heterobilharzia americana?

A

Aquatic snails

49
Q

Adult site of infection in DH for Heterobilharzia americana?

A

Mesenteric veins of large and small intestines

50
Q

What stage of Heterobilharzia americana is infective to the IH?

A

Miricidum

51
Q

What stage of Heterobilharzia americana infects the DH?

A

Cercariae

52
Q

What larval stage does Heterobilharzia americana lack?

A

Metacercariae

53
Q

What are the two rickettsial agents that trematodes are known vectors for?

A

Neorickettsia risticii and Neorickettsia helminthoeca

Parasitology I (14 decks)

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