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Parasitology quiz 3 > Taeniid tapeworms (taenia and echinococcus) > Flashcards

Taeniid tapeworms (taenia and echinococcus) Flashcards

1
Q

Taeniid

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
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2
Q

taeniid tapeworms include

A
  • taenia

- echinococcus

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3
Q

taeniid host

A
  • mammals as intermediate host

- adults in carnivores

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4
Q

taeniid lifecycle

A

Hydatid Cyst – Larval metacestode stage w/ huge cysts that develop tens to hundreds of thousands of heads

  • Protoscolices – Each little metacestode head inside hydatid cyst
  • Cysticercus larva in mammals
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5
Q

taeniid transmission

A
  • cysticerci from human taeniids
  • coenuri from canine taeniids
  • hydatid cysts from canine echinococcus
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6
Q

taeniid organ effected

A

liver

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7
Q

taeniid heads

A

Cysticercus – 1 head per bladder

  • Strobilo-cercus – 1 head per bladder but strobilized
  • Coenurus – Multiple heads per bladder
  • Hydatid – Many heads per bladder (smallest heads, biggest cyst)
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8
Q

taenia pisciformis alt name

A

common dog tapeworm

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9
Q

taenia pisciformis taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
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10
Q

taenia pisciformis host

A
  • intermediate rabbit

- final- dog

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11
Q

taenia pisciformis lifecycle

A

Segment released -> Releases egg -> Rabbit eats egg -> Larva develops in abd cavity & liver -> metacestode cysticercus forms -> Head pops out of cyst when its eaten by dog

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12
Q

taenia pisciformis transmission

A

dogs get it by eating rabbits

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13
Q

taenia pisciformis organ

A

liver

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14
Q

taenia taeniaeformis alt name

A

cat tapeworm

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15
Q

taenia taeniaeformis taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
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16
Q

taenia taeniaeformis host

A
  • intermediate rat

- final cat

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17
Q

taenia taeniaeformis lifecycle

A

-strobilocercus metacestode stage that develops in rat livers

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18
Q

taenia taeniaeformis transmission

A

via ingestion of rats

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19
Q

taenia serialis

A
  • intermediate rabbit

- final dogs, ppl sometimes cats

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20
Q

taenia serialis lifecycle

A

coenurus stage in intermediate

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21
Q

taenia serialis organ effected

A
  • sq cysts in rabbits and ppl

- cns cysts in cats

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22
Q

taenia ovis taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
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23
Q

taenia ovis host

A
  • intermediate sheep

- final dogs

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24
Q

taenia ovis lifecycle

A
  • cysticercus in intermediate
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25
Q

taenia multiceps taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
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26
Q

taenia multiceps host

A
  • intermediate sheep

- final dog, ppl

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27
Q

taenia multiceps lifecycle

A

coenurus in intermediate

28
Q

taenia multiceps organ effective

A

massive cysts in brain

29
Q

taenia multiceps location

A

not in North America

30
Q

taenia hydatigena taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
31
Q

taenia hydatigena host

A
  • intermediate ruminants (usually wild cervids like deer)

- final dogs

32
Q

taenia hydatigena lifecycle

A
  • cysticercus in intermediate w/ long neck like extension of bladder w/ scolex at enx
33
Q

taenia hydatagena organ effected

A

liver

34
Q

taenia crassiceps taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
35
Q

taenia crassiceps host

A
  • intermediate rodents (woodchuck)

- foxes final

36
Q

taenia crassiceps lifecycle

A

asexually multiplying in intermediate

37
Q

taenia crassiceps organ effected

A

skeletal muscle, abd cavity

38
Q

taenia saginata alt name

A

beef tapeworm

39
Q

taenia saginata taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
40
Q

taenia saginata host

A
  • intermediate cow

- final human

41
Q

taenia saginata id

A

no hooks

42
Q

taenia saginata transmisssion

A
  • humans eat infected cows

- humans infected w/ cystericercus which becomes adult

43
Q

taenia saginata organ effected

A
  • encysted larva in muscle of cow
44
Q

taenia saginata location

A

world wide

45
Q

taenia asiatica alt name

A

pork liver tapeworm

46
Q

taenia asiatica taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
47
Q

taenia asiatica host

A
  • intermediate pigs

- final humans

48
Q

taenia asiatica id

A

no hooks

49
Q

taenia asiatica organ effected

A
  • cysticerci in livers of pigs
50
Q

taenia asiatica location

A

asia

51
Q

taenia solium alt name

A

pig tapeworm

52
Q

taenia solium taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
53
Q

taenia solium host

A
  • intermediate pig

- final human

54
Q

taenia solium life cycle

A

Pig ingests egg from human feces  Larva hatch & enter their vessels  Cysticerci develop in muscles & infectious to humans by eating raw pork

55
Q

taenia solium id

A

have hooks

56
Q

taenia solium organ effected

A
  • cysticerci can develop in any organ especially brain
57
Q

taenia solium dx

A

significant dx often associated w/ seizures

58
Q

echinococcus granulosus taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
59
Q

echinococcus granulosus host

A
  • intermediate caribou, sheep, kangaroo (respectively)
  • final wolf, dog, dingo (respectively)
  • humans
60
Q

echinococcus granulosus lifecycle

A

metacestode hydatid in intermediate

61
Q

echinococcus granulosus organ effected

A
  • cysts in liver of intermediates
  • brain of intermediates and final
  • cysts in skin of humans
62
Q

echinococcus multilocularis taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- taeniid
63
Q

echinococcus multilocularis host

A
  • intermediate vole, small rodents

- final arctic fox and dogs

64
Q

echinococcus multilocularis lifecycle

A
  • metacestode hydatid in intermediate

- alveolar hydatid bc not normal round cyst and instead make liver look like lungs

65
Q

echinococcus multilocularis organ effected

A
  • liver of intermediate host

- intestines of final host

66
Q

echinococcus multilocularis dx

A
  • very deadly 1 egg untreated can kill you
67
Q

echinococcus multilocularis location

A

northern us and southern Canada

Parasitology quiz 3 (9 decks)

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