The end of DEET? Scientists are developing a mosquito 'invisibility cloak' that could 取って代わる 伝統的な repellents

• U.S. 研究員s have discovered 実体s that occur 自然に on human 肌 and 封鎖する mosquitoes' ability to smell their 犠牲者s
• The 研究 could be used to help stamp out deadly 病気s such as malaria, which kills だいたい one million people every year
• Some 構内／化合物s 設立する in human sweat attract mosquitoes while 化学製品 構内／化合物s, 含むing 1-methylpiperzine, 封鎖する mosquitoes' sense of smell

By Sarah Griffiths

Published: 13:13 BST, 10 September 2013 | Updated: 11:46 BST, 11 September 2013

U.S. scientists are working on an 'invisibility cloak' for mosquito-疫病／悩ますd people, pets and livestock.

The 研究員s have discovered 実体s that occur 自然に on human 肌 and 封鎖する mosquitoes' ability to smell and 的 their 犠牲者s.

Scientists believe the 研究 could be another step in the fight to stamp out deadly 病気s such as malaria, which kills だいたい one million people around the world every year.

U.S. scientists are working on an 'invisibility cloak' for mosquito-疫病／悩ますd people, pets and livestock. The 研究員s have discovered 実体s that occur 自然に on human 肌 and 封鎖する mosquitoes' ability to smell and 的 their 犠牲者s

Speaking at the 国家の 会合 & 解説，博覧会 of the American 化学製品 Society, 研究 化学者／薬剤師 Ulrich Bernier said that far from 存在 a nuisance, mosquitoes are more deadly to humans than any other animal.

In the U.S. alone, mosquitoes spread rare types of encephalitis, an inflammation of the brain 同様に as transmitting heart worms to pet dogs and cats.

Dr Bernier said: 'Repellents have been the 主要な支え for 妨げるing mosquito bites.'

The most 広範囲にわたって used repellant, DEET, is やめる 効果的な and has been in use for a long time but some people don't like the feel or the smell of the repellant, he said.

'We are 調査するing a different approach, with 実体s that impair the mosquito's sense of smell. If a mosquito can't sense that dinner is ready, there will be no buzzing, no 上陸 and no bite,' he explained.

An 空中の 見解（をとる） of a flooded village in India and a 産む／飼育するing ground for mosquitoes and the spread of malaria, dengue fever and other 病気s. Scientists believe their 研究 could be another step in the fig ht to stamp out malaria, which kills だいたい one million people around the world every year

女性（の） mosquitoes, which suck 血 to 得る a protein needed to produce fertile eggs, can smell people from over 100 feet away.

A person's scent, Dr Bernier explained, comes from hundreds of 構内／化合物s on the 肌, many emitted through sweat and others produced by bacteria.

To identify which of these attract mosquitoes, Bernier and 同僚s at the Mosquito and 飛行機で行く 部隊 at the U.S. Department of 農業's 農業の 研究 Service Centre for 医療の, 農業の, and Veterinary Entomology in Florida, used a special mosquito cage divided by a 審査する.

They sprayed さまざまな 実体s into one 味方する of the cage and 文書d the 影響s in attracting mosquitoes.

Some 構内／化合物s, like lactic 酸性の - a ありふれた 構成要素 of human sweat - were 限定された mosquito 誘惑するs, 製図／抽選 90 per cent of the mosquitoes to the 審査する.

With other 構内／化合物s, however, many of the mosquitoes didn't even take flight or seemed 混乱させるd.

Dr Bernier said: 'If you put your 手渡す in a cage of mosquitoes where we have 解放（する）d some of these inhibitors, almost all just sit on the 支援する 塀で囲む and don't even recognise that the 手渡す is in there.

女性（の） mosquitoes (pictured), which suck 血 to 得る a protein needed to produce fertile eggs, can smell people from over 100 feet away. A person's scent, Dr Bernier explained, comes from hundreds of 構内／化合物s on the 肌, many emitted through sweat and others produced by bacteria

He said that a group of 化学製品 構内／化合物s, 含むing 1-methylpiperzine, 封鎖する mosquitoes' sense of smell.

This may help explain why mosquitoes 飛行機で行く toward some people but not others.

The 実体s have a molecular architecture 設立する in 成分s in dozens of 薬／医学s and other 製品s and they appear suitable for use in cosmetics, lotions, 着せる／賦与するing and other 製品s that 現在／一般に 会社にする／組み込む mosquito repellants, he said.

The Mosquito and 飛行機で行く 部隊 has been doing 研究 on mosquito repellents since the 1940s.

In the 1990s, it 蓄積するd （警察などへの）密告，告訴（状） on 実体s secreted through the human 肌 or formed by bacteria on the 肌 that make some people more attractive to mosquitoes than others.