樟树和夹竹桃灭螺活性成分的提取与灭螺效果的分析

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1、StudyontheextractionoftheactivecomponentsfromCinnamomumcamphoraandNeriumindicumandtheirkillingeffectsonOncomelaniahupensisAbstract：Snailisthesinglehostoftheschistosome．Killingthesnailisthekeymeantocontroltheschistosome．TlletraditionalmethodtocontrolthesnailiSthechemi

2、calmeans．However,touseplantsandtheirproductstokillthesnailhasbecomeoneoftheimportantmethodstocontrolthespreadofthedisease．WeanalyzedthemolluscicidalactivityofCinnamomumcamphoraandNeriumindicumfromsomeaspectsinthisthesis：theeffectsofkillingsnailsOncomelaniahupensisbyu

3、singsoakingliquidsandtheextractionoftheactivecomponentsfromthetWOplants，themechanismofkillingsnailsandtheinfluenceonfishes．Meanwhile，killingeffectsamongdifferenttemperaturesandtheeffectivecomponentsoncontrollingtheclimbingofahupensisw雠studied．娃hupensiswere如altwiththe

4、soakingliquids娃&惑妇}￡theskinsofstemsandrootsQtC，camphoraandN，indicum．Theresultsshowedthatthesoakingliquidsofc．camphoraandⅣindicumhadevidentkillingeffectonD．hupensisaftertreatingforestablishedtime．Thesoakingliquidsofstemsandrootsat>O．5％concentrationcouldkill35％～100％ofn

5、hupensis．Whentreatedfor72hours。themortalityofj。IhupensisWaSupto7蕊～lO溉。Thesoakingliquidsof1％舳shstemsofecamphoraand挺indicumkiHed80％．85％&hupenMs．respectively,whennhupensiswastreatedfor72hours．Thesoakingliquidsof1％舭shrootsofCcamphoracouldkill100％ofnhupensiswhentre砒edfor7

6、2hours．Soakedbythesamekindofsoakingliquids，themortali移of娃hupensisrose蜥mincreasingoftheconcentration．Andwiththetreatir．timeprolongs，themortalityalsorose，Weobtainedaseriesofpartsofdifferentpolarityfromtwoplants．Thedose-effectandtime-effectweredeterminedbyregressionanal

7、ysis，andthedoseandtimeofLDs0and12)90werecalculated．Ourresearchshowedthatmostofplantextractshadmolluscidalactivitytosomedegree．Especiall弘methanolextract,hexyla鲫lextract，aetherextractofⅣindicumachievedLD908slOVFas64．57，81。28，93。33mg／L，whichreachedthestandardofeffecfive

8、-3．mollusicicidesofWHO．Meanwhile．becausetherewasnoobviouseffectofextractstopreventsnailsfromclimbingup。雠conceivedtheideaofsearching