High-octane fuel

 作者:海年     |      日期:2019-03-06 06:11:06
FORGET flower power. The “honeydew” excreted by aphids turns out to be a far better fuel for flies than nectar. Trudy Stanfield at Brock University in St Catharines, Ontario, measured how far the biting insects known as blackflies in North America can fly on a single microlitre of nectar or honeydew. She found that nectar can fuel them for an average of just 44 metres, whereas aphids’ honeydew is good for a whopping 243 metres,