Cestoda

Morphology + female male

Eggs

cyclo → embryonated at birth

• has ether oncosphare (has 3 pair hooks) or hexacanth shape

• eggs hatch in IH & develop into larvae stage

• larve stage → metacestode

pseudo → need time before larvea are seen (uembryonated at birth)

• hatch in H2O → coracidium taken by 1 IH

• in IH shead and become procercoid

• taken second host → plerocercoid

differences b/t cyclo + pseudo

Medically important larvae

cysticercoid

cysticercus

coenurus

hydatid

alveococcus

pg 64

PSEUDOPHYLLIDEA

Genus

How many?

Diagnosis

Fam: Diphyllobothriidae

• Diphyllobothrium 5(latum , pacificum , cordatum , ursi , dendriticum , lanceolatum , dalliae)

• Spirometra 4(mansoni , mansomoides , theileri , proliferum )

How many? → up to 15m

has a bothrie

Diagnosis - identify proglottids or eggs in feces

Life cycle

Diphyllobothrium latum

CYCLOPHYLLIDAE

fam: Anoplo-cephalidae

Kjennetegner

Subfam & genus under them

Kjennetegner: 4 suckers + no rostellum

Subfam: Anoplocephala

Anoplocephala (perfoliata , magna)

• single reprod organ

• eggs have pyriform apparatus

Paranoplocephala (mamillana)

• has intermidiet host → oribatid mites

• diagnosis: fecal examination

• egg - pyrifom apparatus

Moniezia (expansa , benedeni)

-

Subfam: Thysanosomatinae

Stilesia (hepatica , vittata)

Thysanosoma (actinoides)

Avitellina (centripunctata)

Thysaniezia (ovilla , giardi)

.

Andrya (cuniculi , dentata , rhopalocephala) rabbits

Cittotaenia (pectinata, denticulata)

Expansa benedeni difference

life cycle

Anoplocephala spp

Monieza expansa

• 4 suckers, reproductive organs double!!!, Interproglottidal glands Eggs polyedric with pyriform aparatus,

IH: oribatid mites(Oribatidae) → oncosphere → body cavity → cysticerkoid → small intestine of ruminants

Fam: Davaineidae

Davainea (proglottina)

Raillietina (echinobotrida , cesticillus , tetragona)

tape worm birds

Davainea (proglottina)

IH

IH →> slug (limax + arion)

have 4-9 segments

more info 72

Fam: Dilepididae

Amoebotaenia ()

• IH earthworm

Choanotaenia (infundibulum)

birds

• IH flys

Fam: Hymenolepididae 5

Hymenolepis (cantaniana , carioca , lanceolata)

Rodentolepis (nana , diminuta , apodemi , asymetrica , microstoma)

Diorchis

Fimbriaria

Vampirolepis

Fam: Dipylidiidae

Dipylidium (caninum) → 2 sets of genital organ

• IH in dogs: flees (ctenocephalides canis)

• lice (Trichodectes canis + Heterodoxus spiniger)

• stage cysti cercoid

Diplopylidium

Joyexiella

life cycle

Dipylidium (caninum)

Fam: Mesocestoididae

Mesocestoides (lineatus , litteratus , vogae)

• 1IH - arthropods - beatels ites

• 2IH - reptile anphibians small mammals

• FH - car

Fam: Taeniidae

Taenia (saginata, solium, asiatica)

• final car

• IH live stock

• often inside gravid segents (the eggs when shed)

Echinococcus (granulosus , equinus , vogeli , oligarthrus , shiquicus , felidis , multiloculares)

Life cysle

Taenis

saginat the LARGEST

Life cycle

Ehinococcus granulosu

DH: dog, fox, wild canids IH: sheep, cattle, camel, pig, deer, buffalo, human! Location: mainly liver, lung

Echinococcosis occurs in 4 forms:

Cystic echinococosis→ granulosus

Alveolar “ → multilocularis

Poly-cystic “ → vogeli

Uni-cystic “ → oligarthrus