trema
Cards (37)
- trematodes - leaf shaped parasite with a blind bifurcate intestinal tract
- trematodes are mostly hermaphroditic except schistosomes
- blood flukes (schistosomes)
- lung flukes ( paragonimus)
- Schistosoma spp. - causes schistosomiasis infections or bilharziasis
- acute schistosomiasis (katayama fever)
- acute schistosomiasis (katayama fever) - occus at a time of initial parasite egg laying abouth 2-8 weeks after infection
- chronic schistosomiasis - intermittent dysentery and bowel obstruction and urinary tract diseas
- Schistosoma japonicum - aka oriental blood fluke; endemic in philippines
- intermediate host of Schistosoma japonicum - ocomelania hupensis quadrasi
- cercaria is the infective stage of life cycle of blood flukes
- s. japonicum eggs - ovoidal, rounded, pear shaped; thin shelled
- cercaria (blood flukes) - free swimming in water; forked tail
- blood flukes treatment - praziquantel
- paragonimus westermani - lung fluke
- egg of paragonimus westermani is oval, yellowish brown, thick shelled and flattened operculum
- cercaria of paragonimus westermani is covered with spide; ellipsoidal body and small tail
- life cycle of lung fluke embryonates in water
- adults are found in pars in lungs
- treatment of lung flukes - praziquantel
- fasciolopsis buski - interstinal flukes
- fasciolopsis buski - digenetic trematode (intestine in humans and pigs)
- fasciolopsis buski - aka asia giant intestinal fluke
- fasciolopsis buski causes fasciolopsis infection
- adult egg of F.buski is long elliptic, flesh colored
- treatment of intestinal flukes - praziquantel
- fasciola hepatica and F. gigantica is liver flukes
- F. hepatica is temperate liver fluke
- F. gigantica is tropical liver fluke
- liver flukes common name is the sheep liver fluke
- liver flukes can be found in the bile duct of liver
- definitive host of liver flukes : usual host sheep, liver of mammals
- intermediate host of liver flukes - fresh water snails
- infective stage of liver flukes - encysted metacercaria on vegetation
- diagnostic stage of liver flukes - eggs in stool specimen
- disease of F.hepatica and F.gigantica liver flukes - fascioliasis
- treatment of intestinal flukes - bithionol