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Technofile : Lipstick killer

点击量:   时间:2017-11-05 06:01:08

A red dye used in lipstick will kill fruit flies if they eat it and are then exposed to ultraviolet light. The Agricultural Research Service of the US Department of Agriculture has found a way to induce the flies to eat the dye, by blending it with a mixture of sugars, proteins and some enigmatic “other ingredients”. Beneficial insects such as bees ignore the mixture. In tests in Hawaii and Texas the dye killed almost all the fruit flies preying on citrus,