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Parasitology 3rd kelly > Cestode > Flashcards

Cestode Flashcards

1
Q

dipylidium caninum
Intermediate host ?
Metacestode stage?

A

IH: Larval fleas (ctenocephalides felis/canis and pulex irritans)
canine chewing louse (trichodectes canis)

Metascestode stage: cysticercoid
(1 scolex/Not invaginated)

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2
Q

Metacestode stages

A 
Cysticercoid 
Strobilocercus
Cysticercus
Coenurus
Hydatid cyst
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3
Q

Cysticercoid (Scolices/Vagination)

A

1 scolex NO invagination

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4
Q

Strobilocercus (Scolices/Vagination)

A

1 scolex NO invagination

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5
Q

Cysticercus (Scolices/Vagination)

A

1 scolex INVAGINATED

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6
Q

Coenurus (Scolices/Vagination)

A

MANY scolices, INVAGINATED

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7
Q

Hydatid Cyst (Scolices/Vagination)

A

MANY scolices, INVAGINATED

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8
Q

Identification of cyclophyllidea

A

scolex with 4 acetabula +/- armed

strobila of proglottids

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9
Q

taeniid species with cysticercus metacestode stage

A

Taenid..
ovis
hydatigena,(MC called cysticercus tenuicollis)
pisiformis

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10
Q

taeniid species with strobilocercus metacestode stage

A

Taenid taeniaeformis (MC called cysticercus fasciolaris)

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11
Q

taeniid species with unilocular hydatid cyst metascestode stage

A

Echinococcus granulosus (MC called unilocular hydatid cyst)

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12
Q

taeniid species with multilocular hydatid cyst metacestode stage

A

echinococcus multilocularis (MC called multilocular hydatid cyst)

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13
Q

taeniid species with coenurus metacestode stage

A 
Taenia multiceps (MC called coenurus cerebralis)
 Taenia serialis (MC called coenurus serialis)
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14
Q

taeniid species

A 
T. taeniaeformis
   pisiformis
   ovis
   hydatigena
   multiceps
   serialis
Echinococcus granulosus 
Echinococcus multilochularis
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15
Q

Cyclophyllidea species

A

Dipylidium canincum

Taeniid spp.

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16
Q

Pseudophyllidean species

A

Spirometra mansonoides

diphyllobothrium spp.

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17
Q

IH host and location of Taenia taeniaeformis MC stage (strobilocercus) called cystocercus fasciolaris

A

Rodent

LIVER … ingested by felids

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18
Q

Treatment of Cyclophyllidea (preferred tx for taeniid*)

A

Fenbendazole* praziquantel, episiprantel

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19
Q

IH host and location of T. pisiformis MC stage

(cysticercus) called c. pisiformis

A

Rabbit +/- other rodents

peritoneal cavity

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20
Q

taeniid spp. ID

A

LARGE
sculex often ARMED,
proglottid LONGER than wide with ONE genital pore per proglottid on alternating sides
brown radiating/striated egg with hexacanth embrphore

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21
Q

IH host and location of Taeniia hydatigena MC stage
(cysticercus) called c. tenicollis*
IH symptoms

A

ruminant (sheep/goat) +/- pigs
PERITONEAL CAVITY
hemmoragic/fibrotic migration tracts. Lambs traumatic hepatitis and death

22
Q

IH host and location of Taeniia ovis MC stage

(cysticercus) called c. ovis

A

ruminant (sheep/goat)

SKELETAL AND CARDIAC MUSCLE

23
Q

IH host and location of Taeniia multiceps MC stage
(coenurus) called coenurus cerebralis*
IH symtoms

A

ruminants (sheep/goat)
BRAIN and SPINAL CORD
IH signs depend on age location but lambs acute meningioencephalitis

24
Q

which taeniid spp. use rabbits* / rodents as IH for MC stage

A

taenia taeniaformis (liver) –> cats
t. pisiformis (peritoneal cavity)*
t. serialis (SQ/IM connective tissue)*
+/- echinococcus multilocularis

25
Q

Which taeniid spp. use rumintants (sheep/goats) as IH for MC stage

A

Taenia ovis (skeletal and cardiac muscle)
t. hydatigena (perintal cavity)
t. multiceps (brain/spinal cord)
+/- echinococcus granulosus

26
Q

IH host and location of Echinococcus granulosus MC stage
(unilocular hydatid cyst)
IH symptoms

A

Cattle, sheep +/- horse pigs HUMANS
LUNG LIVER BRAIN
dependent on organ effected

27
Q

chyclophyllidea with zoonotic potential

A 
Dipylidium caninum (DH) SI
Echinococcus granulosus (IH) lung liver brain
Echinococcus multilocularis (IH) lung liver
28
Q

IH host and location of Echinococcus multilocularis MC stage
(multilocular hydatid cyst)
IH symptoms

A

rodents +/- dogs, HUMANS
LUNG LIVER
depending on organ effected (domestic animals usually no CS)

29
Q

IH host and location of Taeniia serialis MC stage

(coenurus) called coenurus serialis IH symtoms

A

Rabbits
SQ and IM connective tissue
IH minimal SC bladders +/- impaired muscle function depending on location

30
Q

taenia ovis MC type and name

A

cysticercus = cysticercus ovis

31
Q

taenia hydatigena MC type and name

A

cysticercus

cysticercus tenuicollis*

32
Q

taenia pisiformis MC type and name

A

cysticercus = cysticercus pisiformis

33
Q

taenia taeniaeformis MC type and name

A

Strobilocercus

cysticercus fasciolaris

34
Q

taenia multiceps MC type and name

A

coenurus

coeneruscerebralis*

35
Q

Taenia serialis MC type and name

A

coenurus = coenerus serialis

36
Q

Echinococcus multilocularis MC type and name

A

multilocular hydatid cyst (with brood capsules and budding daughter cysts)

37
Q

Echinococcus granulosus MC type and name

A

unilocular hydatid cyst (with brood capsules)

38
Q 
pseudophyllidean characteristics 
(hosts)
A

TWO intermediate hosts AQUATIC

  1. copepod with procercoid
  2. vertebrate (fish/frog) with plerocercoid
39
Q 
pseudophyllidean characteristics 
(pores and eggs/embryo type)
A

MEDIAL genital AND uterine pores!*
Operculated eggs
ciliated embryo= coracidium

40
Q 
pseudophyllidean characteristics
 (scolex)
A

Scolex with two bothria

41
Q 
pseudophyllidean characteristics
 (MC type)
A

(2 MC types)
procercoid
plerocercoid /sparganum

42
Q 
Cyclophyllidean characteristics 
(hosts and MC types)
A 
ONE TERRESTRIAL IH
   (5 MC types)
   Strobilocercus
   cysticercoid
   cysticercus
   coenurus
   Hydatid cyst
43
Q 
Cyclophyllidean characteristics 
(pores and eggs/embryo type)
A

Lateral genital pores

hexacatnth embryo

44
Q 
Cyclophyllidean characteristics 
(scolex)
A

+/- acetabulum (4 suckers) and hooks (armed)

45
Q

life cycle of psedophyllidean

A

OPERCULATED egg in env, ciliated embryo (CORACIDIUM) emerges ingested by copepod (1 IH) –> procercoid in BODY CAVITY. ingested by vertebrate (fish snake frog rate) procercoid migrate to MUSCLE/CONNECTIVE TISSUE –> pleruocercoid/sparganum encyst. ingested by DH ( cats dogs racoon)

46
Q

geographic distribution of spirometra mansonoides

A

Southern US

47
Q

Psudophyllidia with zoonotic potential

A

spirometra mansonides (2nd IH) if ingest infected 1st IH or other 2nd IH (or skin as ointment)

48
Q

geographic distribution of diphyllobothrium spp.

A

North US (great lakes)

49
Q

treatment of psudophyllidians

A

praziquantel

50
Q

only product approved for Echinococcus spp. (granulosus and multilocularis)

A

Praziquantel

51
Q

taeniid spp vs echinococus spp. eggs

A

**CAREFULL!*
indistinguishable, require PCR
echinoccocus species have zoonotic potential (human IH)

Parasitology 3rd kelly (5 decks)

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