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Scientists Reveal How Mosquitoes Are Able to Smell Humans Even Without Antennae_我的网站

A |     据报道，刘扬伟在年度科技日上表示：“富士康不会销售自家品牌的电动汽车。    Mosquitoes use the body odor, heat, and carbon dioxide that humans emit, varying from person to person, to find their next meal. The study, which was published in the scientific journal Cell, reveals that mosquitoes may perceive odors via a variety of distinct pathways, in contrast to animals, which have a single set of neurons that detect each sort of odor.,Female mosquitoes use the variety of odors that people and other animals produce to find the blood that will feed their eggs. The olfactory neurons in the insects' antennae, which are where they take up scents, detect and send scent information to the brain.,Groups of human-odor receptors on the olfactory neurons in the antennae of female mosquitoes (Aedes aegypti) were rendered inactive by the study's lead author Meg Younger and her colleagues at Boston University in Massachusetts using the gene editing tool CRISPR.,"We found that there’s a real difference in the way mosquitoes encode the odors that they encounter compared to what we’ve learned from other animals,” Younger is quoted as saying in the Guardian report on the findings.,According to Younger, the scientists believed that mosquitoes would adhere to the core tenet of olfaction, which states that each neuron expresses only one type of receptor.,“Instead, what we’ve seen is that different receptors can respond to different odors in the same neuron," she added.,This reportedly suggests that mosquitoes can still detect human odors after losing one or more receptors. The researchers asserted that this backup system may have developed as a survival mechanism.,"The mosquito Aedes aegypti is specialized to bite humans, and it is believed that they evolved to do that because humans are always close to fresh water and mosquitoes lay their eggs in fresh water. We are basically the perfect meal, so the drive to find humans is extremely strong," Younger explained,In the end, the researchers argued, knowing how the mosquito brain perceives human odor could be used to influence biting behavior and stop the spread of diseases like malaria, dengue fever, and yellow fever that are transmitted by those insects.,"One major strategy for controlling mosquitoes is to attract them to traps to remove them from the biting population. If we could use this knowledge to understand how human odor is represented in the mosquito antennae and brain, we could develop blends that are more attractive to mosquitoes than we are. We could also develop repellants that target those receptors and neurons that detect human odor," Younger concluded.,Notably, Christopher Potter at Johns Hopkins School of Medicine in Maryland recently found a similar phenomenon in fruit flies, or Drosophila melanogaster.,“If one of these types of olfactory receptors is mutated or no longer functioning, there’s this backup system," Potter is quoted as saying in the New Scientist report. “It’s changing the dogma of what we thought we knew about the olfactory system.”,Science & TechSmell of Blood: Mosquitoes' Scent-Based Host-Seeking Mechanism Revealed16 May, 05:54 GMT。”他还补充说，“我希望有一天我们可以为特斯拉生产电动汽车。”虽然旗下电动汽车业务羽翼未丰，但富士康制定的目标宏大。“根据我们过去在个人电脑和手机市场的纪录……我们所占的市场份额约为40%到45%。”“所以，放开了讲，我们希望能够取得与信息和通信技术(ICT)行业相同的成绩。但我们会先定个小目标，到2025年约占（整体市场的）5%。

B | ”一年前，富士康向公众展示了三款电动汽车原型，分别是Model C电动SUV、Model E电动轿车和Model T电动客车。

C | 据报道，裕隆汽车计划明年开始销售Model C，届时这款纯电动SUV将被命名为纳智捷N7。报道还称，富士康生产的电动客车已经投入使用。报道称，刘扬伟希望富士康能将公司在技术制造方面的专长应用于汽车制造，使得设计时间减半，并将开发成本降低三分之一。富士康的电动汽车业务始于2019年，其已经签署了许多备受瞩目的协议，包括和裕隆汽车以及美国电动汽车初创企业Lordstown Motors组建合资企业。富士康收购了Lordstown Motors位于的俄亥俄州的工厂，当作在美国市场的制造基地。

D | 尽管富士康规模庞大，但有些项目并没有实现承诺。富士康曾计划在美国威斯康辛州投资几十亿美元建设大型液晶显示器工厂。虽然工厂早已经举行奠基仪式并开工建设，但富士康的承诺尚未完全实现。

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Published on:10:49:18