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789
美国华裔科学家发现大量杀死白纹伊蚊方法,但被批评或许需要大量金钱。
美国密歇根州大学一名华裔科学家,在18周内成功将广州两个岛屿的白纹伊蚊大幅减少,然而有关方法被批评无法用在较大范围,而且可能非常昂贵。
白纹伊蚊又称亚洲虎蚊,雌性的白纹伊蚊能传播骨痛热症、兹卡病毒等病症。科学家利用崭新灭蚊技术,先令蚊子感染一种打击病毒的细菌,再用微量辐射令它们无法繁殖。
由华裔科学家习志勇和他的团队在广州两个出现登革热疫情的岛屿进行实验,将已受细菌感染的雄性白纹伊蚊释放在这两个岛上,结果该两个岛上的雌性蚊子数量每年大幅减少83%至94%,和气他灭蚊方法的成效相若,其中有数个星期甚至记录不到有雌性白纹伊蚊存在。
习志勇的研究成果在周三发表在《自然》期刊,他表示未试过有其他方法能更有效灭蚊。不过随即有外国学者泼冷水,因为这个方法需要释出大量雄性蚊子,每周需要释出400万只,两年来的实验更释出了2亿只蚊。
世界著名灭蚊专家奥尼尔,对于在这两个细小岛屿内需要释出大量蚊子感到担忧。马里兰大学的生物学家洛维特则表示,这种灭蚊方法不能一劳永逸,他说:“你需要不间断地进行,否则雌性白纹伊蚊会很快回复之前水平。”由于需要定期观察,因此可能需要用很多钱。
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