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Parasitology quiz 3 > Cestodes (tapeworms 1) > Flashcards

Cestodes (tapeworms 1) Flashcards

1
Q

cestodes taxonomy

A

kingdom- Animalia (unikonts)
Group- helminths
phylum- Platyhelminthes
class- cestodes (tapeworms)

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2
Q

cestodes alt name

A

tapeworms

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3
Q

cestodes host

A
  • vertebrates final host

- utilize intermediate hosts

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4
Q

cestodes digeston

A
  • no mouth or gut, abs all nutrients through tegument (syncytium covering body)
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5
Q

cestodes segmentation

A

yes segmented body

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6
Q

cestodes sex organs

A
  • hermaphroditic
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7
Q

cestodes main body features

A
  • Holdfast – Anterior end used to attach and move along intestinal wall
  • Scolex – Head area
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8
Q

cestodes body and repro

A
  • Neck – Germinal area behind scolex serving as source of growth for new segments
  • Proglottids/ Stobila – Segments where immature right behind neck, mature behind immature, gravid after mating behind mature and containing eggs
  • Segments can either routinely release eggs into feces or individual segments detach and passed in feces before releasing eggs
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9
Q

cestode transmission intermediate host

A

Intermediate infected by eating egg or ciliated larvae from egg

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10
Q

cestode transmission final host

A
  • Final host infected by eating larva (meta-cestode) in intermediate host
  • Eggs or segments passed in feces of final host
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11
Q

cestode organ effected

A

adults live in si

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12
Q

cestode dx

A
  • larva are dangerous form

- adults typically minimally pathogenicity

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13
Q

cestodes life cycle 101

A

Egg in feces -> Egg or coracidium eaten by inter-mediate host -> Meta-cestode is final stage in inter-mediate host & disease causing stage -> Final hosts eats inter-mediate & thus also ingests meta-cestode -> Becomes strobilate tapeworm in final host intestines

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14
Q

diphyllobothriidea taxonomy

A

kingdom- Animalia (unikonts)
phylum- Platyhelminthes
class- Cestoda
family- Diphyllobothriidae

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15
Q

diphyllobothriidea host

A
  • 1st intermediate host is freshwater copepod
  • 2nd is vertebrate
  • use paratenic host
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16
Q

diphyllobothriidea lifecycle

A

Trematode like eggs w/ operculum on top

  • Coracidium – Product of embryon-ation (egg in water then develops into this w/ 6 hooklets inside)
  • Procircoid – In swimming invertebrates that eat the coracidium
  • Plerocircoid – Stage in next host (meta-cestode in this case)
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17
Q

diphyllobothriidea transmission

A
  • aquatic

- eggs not infectious when passed

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18
Q

dibothriocephalus latus taxonomy

A

kingdom- Animalia (unikonts)
phylum- Platyhelminthes
class- Cestoda
family- Diphyllobothriidae

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19
Q

dibothriocephalus latus host

A
  • intermediate is fresh water copepod

- final is fish eating mammals (bears, dogs, cats)

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20
Q

dibothriocephalus latus transmission

A
  • ingestion of fish

- use paratenic host in bigger and bigger fish to move up food chain

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21
Q

dibothriocephalus latus dx

A
  • usually no clinical signs

- 50% patients have digestive disturbances

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22
Q

spirometra spp. taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
family- Diphyllobothriidae
genus- spirometra
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23
Q

spirometra spp. host

A
  • intermediate are first copepods then string of paratenic like mice
  • final= bobcats and other wild felids
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24
Q

spirometra spp. id

A

Metacestode Spargana – Mature larvae that have heads like the adults similar to plerocircoid in vertebrate final host

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25
Q

spirometra spp. lifecycle

A
  • Procercoid in copepod
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26
Q

spirometra spp. transmission

A
  • Ingestion of vertebrate intermediate host

- In amphibians, reptiles, warm blooded vertebrates and moves up food chain until back in vertebrates

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27
Q

spirometra mansonoides taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
family- Diphyllobothriidae
genus- spirometra
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28
Q

spirometra mansonoides host

A
  • intermediate copepod
  • paratenic amphibian then rat
  • final = bobcat
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29
Q

spirometra mansonoides lifecycle

A
  • egg -> coracidium
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30
Q

spirometra mansonoides id

A
  • eggs look like those of trematodes
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31
Q

spirometra mansonoides organ infected

A
  • skin, CT
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32
Q

cyclophillidea taxonomy

A

kingdom- Animalia (unikonts)
phylum- Platyhelminthes
class- Cestoda
order- Cyclophyllidea

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33
Q

cyclophillidea host

A
  • usually one intermediate host of insects (fleas, lice, mites ect)
  • can use paratenesis
34
Q

cyclophillidea lifecycle

A

Non-trematode like eggs

  • Come out already embryonated & have 6 hooklets inside to tear through intestines of 1st intermediate host
  • Cysticercoid – Stage that uses invertebrates
  • Meta-cestode Cysticercus - larva develops adult head while in insect and head in fluid filled cyst (bladder)
  • Meta-cestode Coenurus – Asexual multiplication in cyst of larva
35
Q

cyclophillidea transmission

A

terrestrial

  • usually pass segments full of eggs
  • eggs infectious when passed
36
Q

mesocestoides spp.

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- Mesocestoididae
37
Q

mesocestoides spp. host

A
  • 1st intermediate unk (possible ants)
  • 2nd is wildlife vertebrate (amphibian, reptile, bird, mammal)
  • final = dogs, cats, raccoons, opossums
38
Q

mesocestoides spp. lifecycle

A
  • Egg in parauterine organ
  • Tetra-thyridium – Metacestode larval stage w/ 4 suckers & no hooks on holdfast in 2nd intermediate
  • Larva can undergo crazy asexual multiplication
39
Q

mesocestoides spp. organ effected

A

abd cavity

40
Q

mesocestoides spp. fun fact

A
  • can actually see them in abd fluid
41
Q

dipylidium caninum alt name

A

flea tapeworm

42
Q

dipylidium caninum taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- Dipylidiidae
43
Q

dipylidium caninum host

A
  • intermediate flea

- final dogs and cats

44
Q

dipylidium caninum lifecycle/ id

A
  • grows to metacestode cysticercoid stage in flea
45
Q

dipylidium caninum transmission

A
  • ingestion of infected flea

- segments crawl out of anus to disperse eggs

46
Q

anoplocephalids taxonomy

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

anoplocephalids host

A

herbivores

48
Q

anoplocephalids life cycle

A

eggs shed in feces

49
Q

anoplocephalids transmission

A

via ingestion of free-living arthropod containing cysticercoid metacestode

50
Q

anoplocephalids pathogenicity

A

typically non-pathogenic

51
Q

moniezia expansa taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- Anoplocephalids
52
Q

moniezia expansa host

A
  • intermediate free living mite

- final sheep

53
Q

moniezia expansa transmission

A

via ingestion fo mite

54
Q

moniezia benedeni taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- Anoplocephalids
55
Q

moniezia benedeni host

A
  • intermediate free living mite

- final cattle

56
Q

moniezia benedeni transmission

A
  • via ingestion of mite
57
Q

anoplocephala magna taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- Anoplocephalids
58
Q

anoplocephala magna host

A

final horses

59
Q

anoplocephala magna lifecycle

A

cysticercoid metacestode in mite

60
Q

anoplocephala magna transmnission

A

via ingestion of orbited mite

61
Q

anoplocephala magna organ effected

A

jejunum

62
Q

anoplocephala magna dx

A

hemorrhagic enteritis

63
Q

anoplocephala magna geography

A

worldwide

64
Q

anoplocephala perfoliata taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- Anoplocephalids
65
Q

anoplocephala perfoliata host

A
  • final horses
66
Q

anoplocephala perfoliata life cycle

A

cysticercoid metacestode in mite

67
Q

anoplocephala perfoliata transmission

A

via ingestion of orbatid mite

68
Q

anoplocephala perfoliata organ

A

ileo-cecal junction

69
Q

anoplocephala perfoliata dx

A

intussusceptions

70
Q

anoplocephala perfoliata location

A

world wide

71
Q

paranaplocephala mamillana taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- Anoplocephalids
72
Q

paranaplocephala mamillana host

A
  • final horses
73
Q

paranaplocephala mamillana life cycle

A

cysticercoid metacestode in mite

74
Q

paranaplocephala mamillana transmission

A

via ingestion of orbited mite

75
Q

paranaplocephala mamillana organ effected

A

duodenum

76
Q

paranaplocephala mamillana location

A

worldwide

77
Q

thysanosoma spp. taxonomy

A 
kingdom- Animalia (unikonts)
phylum- Platyhelminthes 
class- Cestoda 
order- Cyclophyllidea
family- Anoplocephalids
78
Q

thysanosoma spp. host

A
  • intermediate booklice

- final sheep

79
Q

thysanosoma spp. lifecycle

A

cysticercoid metacestode in booklice

80
Q

thysanosoma spp. transmission

A

via ingestion of booklice

81
Q

thysanosoma spp. organ effected

A

bile ducts

82
Q

thysanosoma spp. location

A

Rocky Mountains

Parasitology quiz 3 (9 decks)

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