Class Cestoda

Taenia solium
Taenia saginata
Dipylidium caninum
Hymenolepsis nana
Hymenolepsis diminuta

Species under Order Cyclophyllidea (Class Cestoda)

Diphyllobotrium latum

Species under Order Pseudophyllidea (Class Cestoda)

Platyhelminthes
Cestoda
Cyclophyllidea
Taeniidae
Taenia solium
Pork tapeworm

Taena solium taxonomic classification
P:
C:
O:
F:
SN:
CN:

Taenia solium
scolex
rostellum
hook
sucker

what specie, main part, parts

Taenia solium
rostellum
hooks
sucker
ovary
genital pore
uterus
testes
excretory ducts

what specie, parts

Taenia solium
Phylum Platyhelminthes
Class Cestoda
Order Cyclophyllidea
Family Taeniidae
Taenia solium
Pork tapeworm

what specie and taxonomic classification

rostellum
hooks
sucker
neck
strobila

General characteristics of Taenia solium

Taenia solium
scolex
neck
immature proglottids
strobila
gravid proglottids
mature proglottids

what specie, parts

Taenia solium
Platyhelminthes
Cestoda
Cyclophyllidae
Taeniidae
Taenia solium
Pork tapeworm

what specie, taxonomic classification

Eggs/ gravid proglottids
Embryonated eggs
Oncosphere hatch
Oncosphere develop into cysterci in pig
Humans infected by ingesting raw meat
Scolex attaches to intestine
Adults in small intestine

Life cycle of Taenia solium (Taeniasis)

Eggs or gravid proglottids in feces
Embryonated eggs ingested by human hosts
Oncosphere hatch penetrate intestinal wall
Cysterci may develop in any organ (Cystercosis)

Explain the process of infection of Cystercosis

Taenia solium
Order Cyclophyllidea

what specie can infect the brain, Order

Taenia solium
mature proglottids

what specie, stage

Taenia solium
Gravid proglottid
branched uterus
genital pore
sperm duct

what specie, stage, and parts

Platyhelminthes
Cestoda
Cyclophyllidea
Taeniidae
Taenia saginata
Beef tapeworm

Taenia saginata taxonomic classification
P:
C:
O:
F:
SN:
CN:

lacks rostellum
4 suckers
neck

Characteristics of Taenia saginata (Scolex)

- ______________ unlike in the Taenia solium
- also have _________ in the scolex
- _________ is present posterior to where the suckers are located

Taenia saginata
proglottid
uterus
testes
ovary
genital pore

what species, stage, parts

12
more than 13

what stage

gravid proglottid
uterus
gonopore
Taenia solium
Taenia saginata

what stage, parts, specie

Taenia saginata
Gravid proglottid
uterus
cirrus
gonopore
sperm duct
vagina

what specie, stage, parts

Platyhelminthes
Cestoda
Cyclophyllidea
Dipylidiidae
Dipylidium caninum
Dog tapeworm

Dipylidium caninum taxonomic classification
P:
C:
O:
F:
SN:
CN:

Dipylidium caninum
Flea, louse
Dog, Human
small intestine
Dipylidiasis

Dog tapeworm

SN:
IH:
DF:
OA:
DC:

Dipylidium caninum
Mature proglottid
cirrus pouch
genital pore
vagina
ovary
ootype
testes
vagina
genital pore
cirrus pouch

what specie, stage, parts

Dipylidium caninum
no hook

what specie, part

Dipylidium caninum
egg capsules

what specie, part

Gravid proglottids are passed intact in feces
Proglottids disintegrate and release egg packets
Egg packets containing embryonic eggs are ingested (larval stage of flea)
Oncosphere hatch from eggs, penetrate intestinal wall, Cysticercoid larvae develop
Infected larval stage develop into adult flea
Adult flea w/ infective cysticercoid
Host infected by ingesting fleas
Animals can transmit infected fleas
Humans acquire infection by ingesting infected flea
Scolex attaches to intestine
Adult in small intestine

Life cycle of Dipylidium caninum

Platyhelminthes
Cestoda
Pseudophyllidea
Diphyllobothriidae
Diphyllobothrium latum
Broad/ Fish tapeworm

Diphyllobothrium latum taxonomic classification
P:
C:
O:
F:
SN:
CN

Diphyllobothrium latum
Freshwater fishes
Cats, dogs, man
intestine
Diphyllobothriasis

Broad/ Fish tapeworm

SN:
IH:
DH:
OA:
DC:

Diphyllobothrium latum

Pleroceroid-larva

Diphyllobothrium latum
scolex

what specie and part

Diphyllobothrium latum
gravid proglottid

what specie and part

Diphyllobothrium latum
mature proglottid
uterine pore
cirrus sac
uterus
vitelline glands
ovary
testes

what specie, stage, parts

Diphyllobothrium latum
mature proglottid
cirrus pouch
uterine pore
uterus
ovary
yolk gland

what specie, stage, parts

Diphyllobothrium latum

what species

Unembryonated eggs in feces
Eggs embryonate in water
Coracidia hatch from eggs, ingested by crustaceans
Procercoid larva in crustaceans
Infected crustacean ingested by small freshwater fish
Procercoid larva released, develops into plerocercoid larva
Predator fish eats infected small fish
Human ingests raw infected fish
Adults in small intestine
Proglottids release immature eggs

Diphyllobothrium latum life cycle

Platyhelminthes
Cestoda
Cyclophyllidea
Hymenolepididae
Hymenolepsis nana
Dwarf tapeworm

Hymenolepis nana taxonomic classification
P:
C:
O:
F:
SN:
CN

Vampirolepis nana

Other name for Hymenolepis nana

Hymenolepis nana
adult
scolex
immature proglottids
mature proglottids
gravid proglottids

what specie, stage, parts

Hymenolepis nana
rostellum with hooks
acetabullum
neck

what specie and general parts

Hymenolepis nana
proglottid
genital pore
ovary
3 testes
seminal receptacle

what specie, parts

Hymenolepis nana
egg
polar filaments
hooks
polar thickening

what specie, stage, parts

Hymenolepis nana
Platyhelminthes
Cestoda
Cyclophyllidea
Hymenolepididae
Hymenolepsis nana
Dwarf tapeworm

what specie, taxonomic classification

Hymenolepis nana
beetles, fleas, other insects
humans
small intestine
Hymenolepiasis

Dwarf tapeworm

SN:
IH:
DH:
OA:
DC:

Eggs in feces
Ingested by arthropod intermediate host
Oncospheres hatch and penetrate intestinal wall
Cysticerci ingested by rodent, human
scolex
adults in small intestine
gravid proglottids

Hymenolepis nana life cycle

Platyhelminthes
Cestoda
Cyclophyllidea
Hymenolepididae
Hymenolepsis diminuta
Rat tapeworm

Hymenolepis dimunata taxonomic classification
P:
C:
O:
F:
SN:
CN

Hymenolepis diminuta
Scolex
rostellum
sucker
neck

what specie, main part, parts

Hymenolepis diminuta
mature segment
genital pore
ovary
testes

what specie, main part, parts

Hymenolepis diminuta
egg

what specie, stage

Eggs in feces
Ingested by arthropod intermediate host
Oncospheres hatch and penetrate intestinal wall
Cysticerci ingested by rodent, human
scolex
adults in small intestine
gravid proglottids

Hymenolepis diminuta life cycle