flukes Flashcards
S. japonicum
Common Name
Oriental Blood Fluke
S. japonicum
Reservoir host
Humans and other mammals (dogs,pigs, cats, carabaos, rodents, monkeys)
S. japonicum
Habitat
Superior mesenteric vein of the small intestine
S. japonicum
IH
Oncomelania hupensis quadrasi
S. japonicum
Adult Stages size
Largest
S. japonicum
Location of Ovary
Middle (pyramidal)
S. japonicum
Egg Production
Greatest (3000 eggs per worm pair per day)
S. japonicum
Integumentary Tuberculations
None
S. japonicum
Eggs
Oval with recurved hook or lateral knob
Smallest
S. japonicum
Testes
6-8
Arranged in a single file
Life span
up to 30 years
Schistosomes
Final host
Human
Schistosomes
Infective stage
Forked tail cercaria
Schistosomes
MOT
Skin penetration
S. japonicum
Disease
- Oriental Schistosomiasis
- Snail Fever
- Schistomiasis japonica
S. japonicum
Location
Asia
- China
- Indonesia
- Japan
- Phillipines
S. mansoni
Common Name
Manson’s Blood Fluke
S. mansoni
Reservoir host
Humans, non-human primates
S. mansoni
Habitat
Inferior mesenteric vein of the colon
S. mansoni
IH
Biomphalaria
S. mansoni
Adult Stages size
Smallest
S. mansoni
Location of Ovary
Anterior 1/2
S. mansoni
Egg Production
190-200 eggs/day
S. mansoni
Integumentary Tuberculations
Prominent
rough
S. mansoni
Eggs
Eliptical with lateral spine
S. mansoni
Testes
8-9
arranged in a zigzag row
S. mansoni
Disease
Intestinal Bilharziasis
S. mansoni
Location
Africa and in some parts of South
- America
- Africa
- Madagascar
- West indies
- Suriname
- Brazil
- Venezuela
S. mansoni
Treatment
Praziquantel
S. haematobium
Common Name
Vesical Blood Fluke
S. haematobium
Reservoir host
Humans
S. haematobium
Habitat
Vesical, prostatic, uterine plexuses of the venous circulation
S. haematobium
IH
Bulinus
S. haematobium
Adult Stages
medium
S. japonicum
Treatment
Praziquantel
S. haematobium
Location of Ovary
Posterior 1/2
S. haematobium
Egg Production
30 eggs/day
S. haematobium
Integumentary Tuberculations
Fine
S. haematobium
Eggs
Eliptical with terminal spine
S. haematobium
Testes
4-5
arranged in groups.
S. haematobium
Disease
- Urinary Bilharziasis
- Egyptian Hematuria
S. haematobium
Location
Middle East
- Africa
- Middle east
- India
- Portugal
S. haematobium
Treatment
Praziquantel
Metrifonate
Paragonimus westermani
Common Name
Oriental Lung Fluke
Paragonimus westermani
Final Host
Humans
Paragonimus westermani
Reservoir Host
Dogs, cats, field rats
(Paratenic host - Boars and Pigs)
Paragonimus westermani
Habitat
Lungs
Paragonimus westermani
Life span
20 years
Paragonimus westermani
1st Intermediate Host
2
- Antemelania/Brotia asperata
- Antemelania dactylus
Paragonimus westermani
2nd Intermediate Host
2
- Sundathelphusa philippina/Parathelphusa grapsoides (freshwater crab)
- cray fish. (in other countries)
Paragonimus westermani
MOT
Ingestion of undercooked crabs
Paragonimus westermani
Body color
Reddish brown
Paragonimus westermani
Body Shape
coffee bean shaped
Paragonimus westermani
Tegument
tegument is covered by spines
(Found in pairs or threes,enclosed in fibrotic capsules of the lungs)
Paragonimus westermani
Intestinal Ceca
Wavy
Paragonimus westermani
Testes
lobed
opposite
Paragonimus westermani
Ovary
Lobed (6 long unbranched lobes)
Paragonimus westermani
Embryonation
2-3 weeks up to 7 weeks
(moist soil or water)
Paragonimus westermani
Egg color
golden brown
Paragonimus westermani
Egg distinct features
3
- abopercular thickening; opposite to operculum
- opercular shoulder; on the edge of the operculum
- Wide flat operculum thickening
Paragonimus westermani
Epidemiology
Japan, South Korea, Thailand, Taiwan, China and the Philippines
Paragonimus westermani
Drug of choice
Praziquantel
Bithionol (Alternative)
Fasciolopsis buski
Common Name
Giant Intestinal Fluke
Fasciolopsis buski
Final Host
Humans
Fasciolopsis buski
Reservoir Host
Dogs, pigs, and Rabbit
Fasciolopsis buski
Habitat
Duodenum and Jejunum (Small Intestine)
Fasciolopsis buski
Size
Largest Intestinal Fluke of Man
Fasciolopsis buski
Life span
1year
Fasciolopsis buski
1st Intermediate Host
2
- Genus Segmentina
- Genus Hippeutis
Fasciolopsis buski
2nd Intermediate Host
5
- Trapa bicornis (water caltrop)
- Eliocharis tuberosa (water chestnut)
- Ipomea aquatica (water morning glory)
- Ipomea obscura (kangkong)
- Nymphaea lotus (lotus)
Fasciolopsis buski
MOT
Ingestion of undercooked/raw water plants
Fasciolopsis buski
Body color
Flesh-colored
Fasciolopsis buski
Body Shape
Elongated and oval in shape
Fasciolopsis buski
Tegument
No spines
Fasciolopsis buski
Sucker
Ventral sucker is larger than the oral sucker
Fasciolopsis buski
Intestinal Ceca
simple
Fasciolopsis buski
Testes
- Dendritic
- in tandem
Fasciolopsis buski
Ovary
Branched
Fasciolopsis buski
Embryonation
3 to 7 weeks.
(freshwater)
Fasciolopsis buski
Egg color
Light brown
Fasciolopsis buski
Egg distinct features
3
- Large
- Indistinguishable from Fasciola; hence, if reported, it’s reported as Fascoplopsis/Fasciola
- Hen’s egg appearance
Fasciolopsis buski
Epidemiology
South East Asia, China, Korea, India and Bangladesh
Fasciolopsis buski
Drug of choice
Praziquantel
Echinostoma ilocanum
Common Name
Garrison’s Fluke
Echinostoma ilocanum
Final Host
Humans
Echinostoma ilocanum
Reservoir Host
Dogs, Pigs, Cats, Rats (important)
Echinostoma ilocanum
Habitat
Small Intestine
Echinostoma ilocanum
Size
Smaller than F. buski
Echinostoma ilocanum
Life span
1 year
Echinostoma ilocanum
1st Intermediate Host
2
- Gyrraulus convexiusculus
- Hippeutis umbilicalis
Echinostoma ilocanum
2nd Intermediate Host
2
- Pila luzonica (kuhol)
- Vivipara angularis (susong pampang)