Arijo A G, Qureshi T A, Pathan Z A
Sindh Agriculture University, Tandojam, Pakistan.
Pak J Biol Sci. 2007 Aug 1;10(15):2606-8. doi: 10.3923/pjbs.2007.2606.2608.
This study was conducted to screen different snail species to determine their susceptibility for different parasitic infections and also to determine LC50 and LC90 values. The screening of snail species infected with Schistosome parasite and mean number of cercariae shed by individual infected snail was 184+12. The experiment on relationship of snail size and dose of Niclosamide showed that juvenile snails were more susceptible to chemical when compared with adult snails. A series of seven experiments indicated that concentration of 0.067 and 0.109 mg L(-1) were required to kill 50 and 90% snails, respectively in an exposure period of 24 h and no death occurred in recovery period.
本研究旨在筛选不同的蜗牛种类，以确定它们对不同寄生虫感染的易感性，并确定半数致死浓度（LC50）和90%致死浓度（LC90）值。对感染血吸虫寄生虫的蜗牛种类进行筛选，单个感染蜗牛排出的尾蚴平均数量为184±12。关于蜗牛大小与氯硝柳胺剂量关系的实验表明，与成年蜗牛相比，幼蜗牛对化学药物更敏感。一系列七次实验表明，在24小时的暴露期内，分别需要0.067和0.109 mg L(-1)的浓度才能杀死50%和90%的蜗牛，且在恢复期没有死亡发生。
