Microsoft PowerPoint - Lab_5_Platyhelmintheshttp://pirun.ku.ac.th/~fscibtb
Class Cestoda
Tape worms No digestive system Live in intestine host Superficial segmentation
3 1. Scolex
- rostellum - adhesive organ sucker, bothria
2. Neck - scolex
3. Strobila - 3 Immature proglottid Mature proglottid Gravid uterus , sex organs uterus
Mature proglottid
Taenia spp.
Taeniosis Taenia pisiformis Taenia solium Taenia saginata
Taenia pisiformis Scolex hook 2 sucker 4 1 400 Gravid uterus 11-15
Male sex organs
Testis 3-100 Vas efferens Vas
deferens Vas deferens Cirrus Cirrus Genital atrium Genital pore Genital pore -
Testis
Genital pore
Female sex organs Ootype Ovary 1 2 oviduct ootype Yolk gland yolk duct ootype Mehlis’ gland ootype Uterus ootype Vagina genital pore ootype seminal
receptacle
oviduct Fertilized egg ootype yolk
uterus gravid Gravid 1000 Gravid host
Taenia solium () () Scolex hook 1 Fertilized egg Onchosphere Onchosphere Cysticercus scolex Final host cyst scolex
Scolex of Taenia solium
Cysticercosis
Taenia saginata Scolex hook T. solium 1-2 Gravid uterus 15-20
Fish tape worm, Diphyllobothriosis 60 4 Scolex 2 bothria Genital pore Vitellaria 2 Uterus uterine pore Vagina genital pore Mature proglottid gravid
Diphyllobothrium latum
Life cycle