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Cestodes

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Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Cestodes
Order
Pseudophyllidae
Cyclophyllidae
Family
Diphylobothriidae
Taeniidae
Species
Diphylobothrium Latum
(Broad or fish tapeworm)
Diphylobothrium Mansoni
Taenia Saginata
(Beef tapeworm)
Taenia Solium
(Pork tapeworm)
Geo D
- Common in Europe, in Baltic countries, central Europe & Ireland
- Asia, in Russia, China, Japan & Manchuria
- Africa, in Uganda & Madagascar
- America, in the Great Lakes region & Canada
Far East & USA
A human tapeworm of worldwide distribution
- Worldwide distribution
- Absent where people do not consume pig’s meat (for religious reasons)
- Uncommon in Islamic countries
DH
- Man
- Fish-eating mammals (e.g. dog, cat, bear, fox & other mammals)
Dogs & cats
Man
Man
Habitat
Small intestine
Small intestine
Small intestine attached by suckers
Small intestine attached by suckers & hooks
IH

- Cattle
- Other herbivorous animals
Pig
Morphology
- One of the largest human cestode
- Measuring 3-10 m long with more than 3000 segments

- The adult worm measures up to 10-12 m
- About 1000-2000 segments
- 4-7 m in length
- Has less than 1000 segments (800-1000)
Scolex
- 2.5 x 1 mm in size
- Almond shaped (oblong or spatulate)
- With 2 groves or bothria (slit-like suckers)
- No rostellum or hooks

- Quadrate, 1-2 mm in diameter
- 4 cup-shaped muscular suckers
- No rostellum or hooks

- 1 mm
- Globular ( spherical)
- 4 cup shaped suckers
- Low rostellum with 2 rows of taenoid hooks (alternating large & small hooks 25-30 totally) Mature segment

Similar to Taenia Saginata except:
- Smaller
- Fewer testes
Gravid segment
No gravid segments

- Longer than broad 16-20 mm x 5-7 mm
- Uterus with 15-30 lateral branches
- Separate singly or in stretches (5-6 segments) to pass out with feces or migrate actively through the anal orifice and crawl about the perineum or fall off -

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