香桃木(Myrtus communis)的粗水提取物对Biomphalaria glabrata小螺具有灭螺活性,在0.5g/l剂量时未呈现活性;在1g/l剂量时,给药24小时呈现100％致死率(ED_(50)=0.7g/l),提示活性化合物为水溶性的。香桃木提取物的黄酮组分对B.glabrata小螺的灭螺活性是粗提取物的10倍,在200ppm浓度,培养8小时,观察型50％死亡率;150ppm浓度,培养24小时,死亡率 The crude water extract of Myrtus communis has anti-spirogenic activity against the snails of Biomphalaria glabrata and does not show activity at doses of 0.5 g/l; at doses of 1 g/l, it gives 100% lethality for 24 hours (ED_) (50) = 0.7 g/l), suggesting that the active compound is water soluble. The flavonoid component of the mellowberry extract had 10 times the molluscicidal activity against the microspike of B. glabrata, which was 10 times higher than the crude extract at a concentration of 200 ppm, 50% mortality observed for 8 hours, and 24 hours for a 150 ppm concentration.