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为什么人们总是受到蚊子的骚扰?不要让蚊子灭绝么? « Live in China ...

作者:企业资讯策划团队 来源:rwfb 发布时间:2010-05-31 浏览:418

问:
破坏了许多人类,为什么不能xx蚊子
由它每天都在盯着更不舒服,而不是分青年人和老年人,穷人和富人,美丽的人依然丑陋的人,怎么能这样做

答:
30年的科学家公布了谁蚊子叮咬的奥秘

央视国际(2003年07乐04日14:40)

光明(Guangming)日报消息:天气和越南更多的美国热,恼人的蚊子也日趋活跃。如果我们站在河流或森林的边缘,不久将受到蚊子的袭击。蚊子依靠能够很快发现自己在那里?当几个人分享时,蚊子是经常挂在一些人被蚊子叮咬一个房间,有些人则很少被蚊子叮咬,或不觉得蚊子的存在。这些问题不仅每个人都想知道,也昆虫,研究人员要解决的问题。美国农业研究服务中心的蚊子,昆虫,该部经过30年的不懈努力,终于揭开秘密年。

20岁在上个世纪(Centruy),昆虫,研究人员已经知道人与动物呼出的二氧化碳来吸引蚊子的作用。 1968年,农业服务部门的昆虫研究中心,Yike瑞,谁发现,在汗水乳酸能吸引蚊子。然而,这两种化合物单独使用,或没有在蚊子的吸引力(Attraction)大臂一混合。这证明,必须有其他的化合物是蚊子的引诱。您要分析的果汁成分,研究人员遇到的困难,只有在排放到空气中的物质少量挥发性物质,汗水难以分析。在大量的水在分析工作汗水也是一个严重的干扰。现在,微观分析确定了技术的飞速发展,使得他们的物质分离和鉴定等少量。 1999年,在与佛罗里达大学合作部Boernier蚊子采取的抽样方法,手掌搓手一个小玻璃珠,用气相色谱-组件的汗水质谱鉴定。这种抽样方法有两个好处,以避免在大量的水对干扰分析的汗水,而且也是人类xx角鲨烯排放的痕量元素(Element)的干扰。 2000年,他们进行了补充分析报告。两种化合物的分析鉴定出303。

为了测试蚊子景点的303的化合物,他们设计了一种特殊的气味测量装置进行试验。超过20年前,昆虫研究中心的技术人员发现,当双手触摸玻璃在玻璃上的残留物仍然吸引蚊子。对血液汗水的痕迹对蚊子的吸引力(Attraction)种植橡胶可以维持长达6个小时。这种诱饵他们使用一种代替标准每个组件的性能手臂xx诱惑(Allure),比较测试。经过汗水挥发成分和一个匹配的大量试验相结合的内容,他们发现,乳酸,丙酮和二甲基硫醚的混合物对蚊子有特别强的吸引力(Attraction)。丙酮被释放时脂肪代谢体组成。二甲基硫醚是释放出来的xx分解蛋白质的组成部分。当单独使用这三个组成部分,他们只有温和的蚊子的吸引力(Attraction)。例如,乳酸只能吸引不到20%的蚊子,和C栋,以混合吸引蚊子的80%。但它也不会超过人的手臂,对蚊子的吸引力(Attraction)。二甲基二硫构成引诱剂的主要成分。在二元混合物,在加入这个组件,它变得比一些人更吸引蚊子。它准备在人工引诱剂实验首次发现这种成功的例子。他们的研究目标是迫使一个更强有力的引诱引诱准备,使蚊子远离进入陷阱,以xx蚊子。根据他们的研究,大多数人而言,代谢物排放基本上是相同的成分,但数额为每个化合物有很大不同。这也解释了为什么当蚊子叮咬的人有不同的偏好。然而,目前他们不知道如何将这些物质相互作用来吸引蚊子。例如,在不同浓度的一些化合物具有不同的吸引力(Attraction),在非常低的浓度有吸引力(Attraction),而在高浓度没有增加吸引力(Attraction)。擅自闯入丙酮,乳酸和二甲基二硫不是一个好引诱剂混合在一起。因此,你希望得到更好的引诱仍然有很多工作要做。

Boernier带领的研究小组找到了相当大的引诱身上的汗分泌物,他们也知道如何寻找驱蚊剂的方法。他们利用引诱剂添加其他化合物找到一种方式,以避免驱蚊化合物。这种化合物可诱导的蚊子减少6%的代理活动。随着美国市场,仅销售在蚊子接近或皮肤时,驱蚊剂的作品是从不同的化合物接触,使蚊子感受不到目标的存在。例如,在空气质量化合物,进一步的实验蚊子释放伸出手臂,大部分蚊子不觉得一个人的胳膊,甚至有。它们的感觉器官显然是受到干扰。这项专利的权利和原因,他们没有报告的复合名称的利益。研究结果将有助于控制蚊子的研究进展,为更多,更好的xx性,驱蚊剂。 (中国医学科学院的,过γ)药用植物研究

在夏季适当的环境,将雌蚊在水中产卵后12天,孵化成幼虫,幼虫要求。后四成蛹,幼虫蜕皮后,蛹继续在水中生活两三天,你可以羽化成蚊。在研制一代完成只需大约10-12天的一年,繁殖78代。

看到,蚊子繁殖,而且在不断演变汗?- _ -

答:
青年人和老年人,穷人和富人,美丽或丑陋的人,谁是上帝

表达了自己的公平阿,

答:
你是否认为,如果强劲,适应力强的物种已经灭绝蚊子繁殖,人类的物种可以在这个世界?

答:
{zh0}的办法是让蚊子变异,不再吸人血。

答:
这将破坏生态平衡。

答:
{zh0}的方法是改变蚊子的基因,已不再是吸人血。

Why do people always be subject to harassment by mosquitoes? Not let mosquitoes extinction Mody?

Question:
destroyed so many human species, why can not eliminate mosquitoes
by it every day, staring at more uncomfortable, and not sub-young and old, poor and rich, beautiful people are still ugly people, how can do it

Answer:
the United States for 30 years scientists who unveiled the mysteries of mosquito bites

CCTV International (2003 07 Yue 04 Ri 14:40)

Guangming Daily News: Weather and Vietnam to more heat, annoying mosquito is also increasingly active. If we stand on the edge of the river or the woods, and soon will be subjected to mosquito attacks. Mosquitoes rely on to be able to quickly find ourselves in there? When several people sharing a room when the mosquito is often repeated some people mosquito bites, while some people have very few mosquito bites, or do not feel the presence of mosquitoes. These problems not only everyone wants to know, and also insects, the researchers want to solve. U.S. Agricultural Research Service Center for mosquitoes, insects, the Department after 30 years of unremitting efforts to finally reveal the secret.

age of 20 in the last century, insects, researchers have known people and animals exhale carbon dioxide to attract mosquitoes and the role of. In 1968, the agricultural services division Insects Research Center, Yike Rui, who found that lactic acid in sweat can attract mosquitoes. However, these two compounds used alone or mixed with no one in the arm of the big attraction of mosquitoes. This proves that there must be other compounds are mosquito attractant. You want to analyze the composition of the juice, the researchers encountered difficulties, and only with the sweat of volatile substances emitted into the air in a small amount of material is difficult to analyze. Sweat in large amounts of water on the analytical work is also a serious distraction. Now, micro-analysis identified the rapid development of technology has made it possible for them to such small amounts of material separation and identification. In 1999, the Ministry of Boernier mosquitoes in cooperation with the University of Florida to take a small glass beads with the palm of the hand rub method of sampling, using gas chromatography - mass spectrometry identification of sweat components. This sampling method has the advantage of both to avoid the sweat in large amounts of water on the analysis of the interference, but also the eradication of human squalene emitted interference of trace elements. In 2000, they conducted a supplementary analysis. Analysis of the two compounds were identified out of 303.

In order to test the 303 compounds on mosquito attraction, they designed a special odor measuring device to carry out experiments. More than 20 years ago, insect research center s technical staff had found that, when the hands touch the glass to remain in the residue on the glass to attract mosquitoes. Rub on the cultivation of sweat traces of blood on the attraction of mosquitoes can maintain up to 6 hours. This kind of bait they use to replace the arm as a standard the performance of each component to resist the temptation to compare test. After a sweat volatile composition and content of a combination of a large number of matching tests, they found that lactic acid, acetone and dimethyl disulfide mixture of mosquitoes have a particularly strong attraction. Acetone was released when the body composition of fat metabolism. Dimethyl sulfide is released when the bacteria break down the protein components. When these three components used alone, they have only moderate for mosquito attraction. For example, lactic acid can only attract less than 20% of the mosquitoes; and C-tung mixed in order to attract 80% of the mosquitoes. But it also does not exceed the person s arm, pairs of mosquitoes appeal. Dimethyl disulfide constitute the main component of attractant. In the binary mixture, after adding this component, it becomes more than some people are more attractive to mosquitoes. It is prepared in an artificial attractant experiment found the first successful example of this. Their research goal is to force the preparation of a stronger attractant lure, so that mosquitoes away from entering traps to eliminate mosquitoes. According to their research, most people, the discharge of metabolites are basically the same ingredients, but the amount varies for each compound vary greatly. This also explains why, when mosquitoes bite people have different preferences. However, at present they do not know how these substances interact to attract mosquitoes. For example, some compounds in different concentrations have different attraction; at a very low concentration there is attraction, while at high concentrations did not increase their attraction. Arbitrarily into acetone, lactic acid and dimethyl disulfide is not a good attractant mixed together. Therefore, you want to get better attractant still a lot of work to do.

Boernier led team found the body sweat secretions with the considerable attractant, they also know how to find insect repellent methods. They use the attractant to add other compounds to find a way to avoid mosquito repellent compound. This compound can induce the activity of agents on the reduction of mosquito 6%. With the U.S. market, sold only in mosquitoes proximity or contact of the skin when the insect repellent works is different from the compound so that mosquitoes do not feel the presence of the target. For example, the release of the compound in air quality, further experimental mosquito extend their arms, most mosquitoes do not feel someone s arm or even there. Their sense organs clearly is subject to interference. As the patent rights and interests of the reason they did not report the name of the compound. The research results will contribute to the progress of mosquito control research to develop more and better security, insect repellent. (Chinese Academy of Medical Sciences researcher of medicinal plants, Guo gamma)

a suitable environment in the summer, the female mosquitoes will be eggs in water, 12 days after hatch into larvae, called larvae. After the larvae molt into pupae after four, pupa continues to live in the water two or three days, you can eclosion adult mosquitoes. The completion of generation of development takes only about 10-12 days a year, on behalf of breeding 78.

see, mosquito fecundity, but also in constant evolution Khan ~-_-

Answer:
both young and old, the poor and the rich, beautiful or ugly person who is God in

expression to his fair A,

Answer:
Do you think that if the mosquito fecundity as strong, highly adaptable species are extinct, the species of mankind can do in this world?

Answer:
The best way is to let mosquitoes variant is no longer suck human blood.

Answer:
This will destroy the ecological balance.

Answer:
The best The approach is to change the mosquito DNA, is no longer suck human blood.04-12-31

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