0s_ l 16
16 Schistosome life cycle
Egg cercariae Snail- intermediate host Schistosoma
Egg Schistosoma Snail- intermediate host cercariae
A=Infective Stage Sporocysts in snail(4 into water and free-swimming A=Diagnostic Stage (successive generations) A rcariae lose tails during penetration and become Penetrate schistosomula Circulation 3,Miracidia penetrate snail tissue A Migrate to portal bloo d in liver and mature into adults(9 ces in unne Eggs hatch releasing miracidia 0 Paired adult worms migrate to S japonicum a LE mavientecics thaut es of te te tectum S. mansoni S haematobium liver and shed in sto c venous plexus of 醫中藥網 Www.zhoNg-yao.Net