TheadulttapewormisTheprotoscolex attachesfoundin the smalltothehost'sintestineandintestine of the caninedevelops into atapeworm.***生活史(definitive)host.(Lifecycle)The definitive host isinfected whenitingeststhe hydatid cyst(protoscoleces).Eggs are passed inthe host's feces.The eggs are ingestedbyan intermediateThe larva develops intohost. Many speciesa hydatid cystofwarmbloodedvertebrates can beinfected.医学寄生虫学ThelarvahatchesfromThe larvae can bedistributed to almostthe egg in the smallintestine,penetratestheany organ, but theintestinal lining,andliveristhe most新疆华病原生物学enters the blood stream.common
***生活史 （Life cycle）
***生活史要点终宿主：犬、狼、豺等犬科食肉类动物国终宿主食入棘球坳，其内每个原头都可发育为一条成虫。成虫寄生部位：小肠国感染阶段：棘球坳国■感染方式：经口食入病原生物学新疆维吾尔自治区精品课程
p 终宿主：犬、狼、豺等犬科食肉类动物 终宿主食入棘球蚴，其内每个原头蚴都可发育为 一条成虫。 p 成虫寄生部位：小肠 p 感染阶段：棘球蚴 p 感染方式：经口食入 ***生活史要点