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Study on the Application Saponin in the Prevention and Cure of Shistosomiasis I.Using Tea Saponin as the Mollucicide to Oncomelania ,the Intermediate Host of Schistosmiasis Zhang Shushang,Zhou LiHong,Zhu Jinhua (Hunan Institute of Parasitic Disease,Yueyang 414000) Xia Chuunhua,Zhu Juanfen,LiuRongxiang (Tea Reaearch Institute,Chinese Academy of Agricultural Sciences,Hangzhou 310008) Abstract According to the experiments on Oncomelania,the intermediate host of Schistosom mansoni,tea saponin, used as the molluscicide,showedeffective efficacy on the adult and juvenile snails and the snail eggs.Mortalities of 100% was obtained by immersing the molluse and their eggs with 2.5-5.0mg/L tea saponin solution,and of 82%-90% by spraying the adult snails with tea saponin under the dosages of 5-20%g/m2.Tea saponin showed much lower toxicity to freshwater fish than Niclosamide,and its easy availability,low price botanieal origin and nonpollution made its broad developing prospects.Toxicity and operation techniques of tea saponin as the molluscicide was detailed. Key words:Tea saponin,Oncomelania,Toxicity Ç° ÑÔ ÈÕ±¾ÑªÎü³æ²¡ÊÇÒ»ÖÖ¼ÄÉú³æ²¡£¬ÒÑÔÚÎÒ¹úÄÏ·½12¸öÊ¡ÊÐ×ÔÖÎÇøÊ¢ÐУ¬Ñ¬È¾ÑªÎü³æÕß´ï1200ÍòÈË£¬ÓÐÂÝÃæ»ý148Íò©O£¬²¢ÇÒÈÔÔÚÉìÕÅÀ©Õ¹£¬ÑÏÖØΣº¦ºÍÍþв×ÅÎÒ¹úÈËÃñµÄ¿µ½¡ºÍÉúÃü£¬ìî³ý¶¤ÂÝÊÇ·ÀÖÎѪÎü³æ²¡µÄÒ»ÏîÖ÷Òª²½·¥£¬ÆäÖÐÒ©ÎïÃðÂÝÊÇÄ¿½ñµÄÖ÷ÒªÃðÂݲ½·¥¡£º£ÄÚ³£ÓõÄÃðÂÝÒ©ÎïÎåÂÈ·ÓÄÆ£¬¶ÔÈËÐó¶¾ÐÔ´ó£¬ÓС°ÈýÖ¡±×÷Óã¬ÇÒÎÛȾÇéÐΣ¬ÌìÏÂÎÀÉú×éÖ¯ÒÑեȡÉú²úºÍʹÓá£ÂÈÏõÁø°·É±ÂÝЧ¹ûËäºÃ£¬µ«¼ÛÇ®ÌÚ¹ó£¬Æä50%¿ÉʪÐÔ·Û´ï6ÍòÔª/¶ÖÒÔÉÏ£¬ÏÖÔÚ¾¼ÃÉÏÄÑÒÔÔâÊÜ¡£×·ÇóÒ»ÖÖ×ÊÔ´¸»ºñ£¬Äܾ͵ØÈ¡²Ä£¬²¢ÇÒ¶ÔÇéÐÎÎÞÎÛȾµÄ×ÔȻֲÎïɱÂݼÁ£¬ÒÑÊǵ±ÎñÖ®¼±¡£ ÏÖÔÚÌìÏÂÉÏÑо¿µÄÓÐÓÃÖ²ÎïɱÂݼÁÖУ¬ÓÐÓÃÒòËؾùΪÔíß°ÀàÎïÖÊ£¬Èç°£Èû¶í±ÈÑÇÑо¿ËùµÄÖ²ÎïɱÂݼÁ¶÷¶àÌؽ¬¹û£¬ÎÒ¹úÕýÔÚÑо¿µÄÊíÝ÷¿ÆÖ²Îï¡£Ðí¶àÖ²ÎïÈçɽ²è¿Æ¡¢¶¹¿Æ¡¢Ã«Ý¹¿ÆµÈ¾ùϵËùº¬µÄÔíß°ÒòËØÆðɱÂÝ×÷ÓᣲèÔíËØÊÇ´Ó²è×ѱýÖÐÌáÈ¡³öÀ´µÄÒ»ÖÖ×ÔȻֲÎïÔíËØ¡£ÏÖÔÚÒѾ֤ʵ£¬²èÔíËØÔÚº£Ë®Àï¶ÔÓãÀàµÈ±äζ¯Îï¾ßÓкÜÇ¿µÄ¶¾ÐÔ£¬²¢ÇÒ×ÊÔ´¸»ºñ£¬¼ÛÇ®µÍÁ®¡£Îª´Ë£¬ÓÚ1993¡ª1994ÄêÔÚʵÑéÊÒ¾ÙÐÐÁ˲èÔíËØɱ¶¤ÂÝʵÑéºÍµË®ÀïµÄÓ㶾ÐÔʵÑ飬ÏÖ±¨¸æÈçÏ£º
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