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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
Which taeniid spp. use rumintants (sheep/goats) as IH for MC stage
Taenia ovis (skeletal and cardiac muscle) t. hydatigena (perintal cavity) t. multiceps (brain/spinal cord) +/- echinococcus granulosus
26
IH host and location of Echinococcus granulosus MC stage (unilocular hydatid cyst) IH symptoms
Cattle, sheep +/- horse pigs HUMANS LUNG LIVER BRAIN dependent on organ effected
27
chyclophyllidea with zoonotic potential
``` Dipylidium caninum (DH) SI Echinococcus granulosus (IH) lung liver brain Echinococcus multilocularis (IH) lung liver ```
28
IH host and location of Echinococcus multilocularis MC stage (multilocular hydatid cyst) IH symptoms
rodents +/- dogs, HUMANS LUNG LIVER depending on organ effected (domestic animals usually no CS)
29
IH host and location of Taeniia serialis MC stage | (coenurus) called coenurus serialis IH symtoms
Rabbits SQ and IM connective tissue IH minimal SC bladders +/- impaired muscle function depending on location
30
taenia ovis MC type and name
cysticercus = cysticercus ovis
31
taenia hydatigena MC type and name
cysticercus | cysticercus tenuicollis*
32
taenia pisiformis MC type and name
cysticercus = cysticercus pisiformis
33
taenia taeniaeformis MC type and name
Strobilocercus | cysticercus fasciolaris
34
taenia multiceps MC type and name
coenurus | coeneruscerebralis*
35
Taenia serialis MC type and name
coenurus = coenerus serialis
36
Echinococcus multilocularis MC type and name
multilocular hydatid cyst (with brood capsules and budding daughter cysts)
37
Echinococcus granulosus MC type and name
unilocular hydatid cyst (with brood capsules)
38
``` pseudophyllidean characteristics (hosts) ```
TWO intermediate hosts AQUATIC 1. copepod with procercoid 2. vertebrate (fish/frog) with plerocercoid
39
``` pseudophyllidean characteristics (pores and eggs/embryo type) ```
MEDIAL genital AND uterine pores!* Operculated eggs ciliated embryo= coracidium
40
``` pseudophyllidean characteristics (scolex) ```
Scolex with two bothria
41
``` pseudophyllidean characteristics (MC type) ```
(2 MC types) procercoid plerocercoid /sparganum
42
``` Cyclophyllidean characteristics (hosts and MC types) ```
``` ONE TERRESTRIAL IH (5 MC types) Strobilocercus cysticercoid cysticercus coenurus Hydatid cyst ```
43
``` Cyclophyllidean characteristics (pores and eggs/embryo type) ```
Lateral genital pores | hexacatnth embryo
44
``` Cyclophyllidean characteristics (scolex) ```
+/- acetabulum (4 suckers) and hooks (armed)
45
life cycle of psedophyllidean
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
geographic distribution of spirometra mansonoides
Southern US
47
Psudophyllidia with zoonotic potential
spirometra mansonides (2nd IH) if ingest infected 1st IH or other 2nd IH (or skin as ointment)
48
geographic distribution of diphyllobothrium spp.
North US (great lakes)
49
treatment of psudophyllidians
praziquantel
50
only product approved for Echinococcus spp. (granulosus and multilocularis)
Praziquantel
51
taeniid spp vs echinococus spp. eggs
**CAREFULL!* indistinguishable, require PCR echinoccocus species have zoonotic potential (human IH)

Parasitology 3rd kelly (5 decks)

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