Israeli researchers say they have developed a substance that attracts and kills mosquitoes infected with the malaria parasite. 以色列研究人员称他们已研发出一种能够引诱并杀死感染疟疾寄生虫蚊子的物质。 However, the sweet smelling substance is said to be harmless to people and animals. 这种物质闻起来有一种甜味,据说还对人畜无害。 Scientists at Hebrew University in Jerusalem developed the sugary bait by combining fruit juice oils and boric acid. 耶路撒冷希伯来大学的科学家将果汁油和硼酸结合起来制成这种甜饵。 The fruit juice gets the attention of the mosquitoes. 其中含有的果汁能吸引蚊子的注意力。 Boric acid kills the insects when they eat it. 当蚊子吃饵时,硼酸就能杀死它们。 The scientists took the boric acid sweet bait to the West African nation of Mali. 科学家把这种硼酸甜饵带到西非的马里。 They sprayed it on plants near man-made ponds. 把诱饵洒到人工池塘附近的植物上。 Villagers use water from the ponds during the dry season. 那里的村民在旱季要使用这些池塘里的水。 But the area is also home to Anopheles gambiae, the mosquito that carries the most deadly form of malaria. 但这些池塘同时也是携带最致命型疟疾的冈比亚按蚊的栖息地。 The researchers also placed a sweet-smelling spray on grasses near other ponds. 研究人员还在其它池塘附近的草丛中放置甜味喷雾器。 But that spray contained no boric acid. 但这种喷雾器不含硼酸。 Both substances also contained a substance that would mark any mosquito that came in contact with it. 以上两种诱饵均含有一种对触碰过诱饵的蚊子进行标记的物质。 This way the scientists could count the mosquitoes that fed on the bait. 这样科学家便可统计吃过诱饵的蚊子的数量。 Yosef Schlein is an expert on insects that affect human health. 优素福·施莱是研究影响人类健康害虫方面的专家。 Professor Schlein led the sweet bait research. 施莱教授领导这项甜饵研究的。 He says 38 days of results show the sweet boric acid bait proved very effective at killing mosquitoes. 施莱表示,他们为期38天的研究结果显示,这种甜味硼酸饵在灭蚊方面效果显著。 "In Mali, we got down by some 80%, the females, and 90% of the males. 我们在马里消灭了大约80%的雌蚊和90%的雄蚊。 But the area is full of little ponds in there, so it is impossible to stop mosquitoes from flying from an untreated pond to a treated pond." 但那里到处都是小池塘,想阻止蚊子从我们没有处理过的池塘飞到我们处理过的池塘是不可能的。 At the ponds treated only with sweet-smelling bait, Professor Schlein says, more than 75% of mosquitoes fed on the false bait. 施莱教授称,在那些仅被甜味诱饵喷过的池塘处,超过75%的蚊子以假饵为食。 He says most people do not know that female mosquitoes feed on sweet plant nectars to survive. 他表示,大多数人并不知道雌蚊子存活下来是靠吃植物的甜花蜜。 Their blood feedings are part of reproduction. 吸人血只是它们繁殖期的一个组成部分。 The Israeli researchers now hope to develop a bait that is even more desirable to the malaria mosquitoes. 如今以色列研究人员希望研发出一种对携带疟疾寄生虫蚊子更具吸引力的诱饵。 Boric acid is generally safe for human beings and other mammals. 硼酸对人及其它哺乳动物大体上是安全的。 Professor Schlein says scientists might be able to develop a mosquito bait for enclosed spaces. 施莱教授表示,科学家或许可以研发一种可用于密闭空间的蚊子诱饵。 Boric acid has been used to kill other insects including cockroaches, termites and ants inside homes since the middle of last century. 自上世纪中叶开始,硼酸就被用来消灭家宅内的蟑螂、白蚁、蚂蚁等其它昆虫。 A report about the malaria mosquito sweet bait was published in Malaria Journal. 有关这种针对携带疟疾病菌蚊子的甜饵的报告发表在《疟疾杂志》上。