(2.3.1)--Section3IntroductiontoTapeworm.ppt

《(2.3.1)--Section3IntroductiontoTapeworm.ppt》由会员分享，可在线阅读，更多相关《(2.3.1)--Section3IntroductiontoTapeworm.ppt（14页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、Section3IntroductiontoTapewormAppearance:flattened,banded.Scolex,neckandstrobilaColor:milkySize:afewmillimeterstomorethan10meters 1.Morphology1.Immature segment2.Mature segment3.Gravid segment1.Thebodyisflatandlong,dividedintosections,eachsectionhasitsownreproductiveorgans2.Nomouthanddigestivetract,

2、completelyrelyonbodysurfacetoabsorbnutrients3.Thefixedorgansareconcentratedatthehead(sucker,smallhook,bothriate)CharacteristicsoftapewormsStrobilaReproductivesystemHermaphroditeReproductivesystemmodel2.ClassificationCestoideaCestodariaEucestodaPseudophyllideaCyclophyllideaCyclophyllideaTaeniidae:Tae

3、nia Echinococcus Hydatigera VersteriaAnoplocephalidae:Moniezia Anoplocephala Paranoplocephala Avitellina ThysanieziaDavaineidae:Davainea Raillietina Cotugnia HouttuyniaDipylidiidae:Dipylidium Amoebotaenia ChoanotaeniaHymenolepididae:Hymenolepis Drepanidotaenia FimbriariaMesocestoididae:Mesocestoides

4、Paruterinidae:Paruterina Anonchotaenia Biuterina Cladotaenia3.DevelopmentIntermediatehostFinalhostdigestivetractAdultEnvironmentEggCysticercoid(arthropod)Cysticerus(mammal)MetacestodeDevelopmentofCyclophyllideaEggMonieziaDipylidiumTaeniidaeCyclophyllideaMetacestodeCysticerusCysticercustenuicollisCysticerusConcavescolexExtendedscolex多头蚴CoenurusConcavescolex（protoscolices）棘球蚴HydatidcystprotoscolicesCysticercoid(arthropod)Concavescolex