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Bright Colors: Eat Me at Your Own Risk 鲜艳的色彩风险自负
Pub Date : 2024-03-12 DOI: 10.3389/frym.2024.1270515
Retna Arun, Hannah Gurholt, Udita Bansal, Swanne P. Gordon
Some poisonous animals use bright coloration to protect themselves from other animals that want to eat them. These bright colors are also called warning colors. Frogs, snakes, butterflies, skunks, and more all use warning coloration. But how do the animals get their bright colors and toxic poisons? Warning colors can be passed down to certain animals from their parents, and other animals get them from the foods they eat. Just because some animals have bright colors does not always mean they are toxic. Some animals, also known as mimics, copy the colors of toxic animals so they can protect themselves from being eaten. We will explore how poisonous animals show their true colors, and how non-poisonous animals that display the same signals can also be protected from predators. You may notice similar connections between color and warning signals all around you!
有些有毒动物会用鲜艳的颜色来保护自己,以免被其他动物吃掉。这些鲜艳的颜色也被称为警告色。青蛙、蛇、蝴蝶、臭鼬等都使用警示色。但是,这些动物是如何获得鲜艳的颜色和有毒的毒药的呢?某些动物的警示色可能是父母遗传给它们的,而其他动物则是从它们吃的食物中获得的。某些动物拥有鲜艳的颜色并不总是意味着它们有毒。有些动物(也称为拟态动物)会模仿有毒动物的颜色,从而保护自己不被吃掉。我们将探讨有毒动物如何显示它们的真实颜色,以及显示相同信号的无毒动物如何保护自己免受捕食者的伤害。您可能会注意到颜色和警告信号之间的类似联系!
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引用次数: 0
The Cycle of Stress: From Individuals to the World and Back 压力的循环:从个人到世界再到个人
Pub Date : 2024-03-12 DOI: 10.3389/frym.2023.1229085
Y. Vodovotz, Julia C. Arciero, P. Verschure, David L. Katz
Stress is a feeling of being worried, scared, or overwhelmed, caused by challenging situations or big life changes. Not all stress is bad, and some kinds of stress, like exercise, can even be good for us. However, when stress is severe or lasts a long time, it can harm our health. Severe stress causes inflammation, which is the body’s way of protecting itself. Inflammation helps the body heal, but long-lasting inflammation can lead to health problems. Stress can also affect the brain, making it hard to think clearly or make good decisions. In our work, we linked all these stress-related factors together (using math) to explain our hypothesis that stress can spread from person to person through our actions, words, and body language—and even over social media—until it affects whole societies and eventually the entire planet! This is a dangerous cycle that can lead to even more stress and inflammation, making problems worse. To break the cycle, we each need to focus on reducing stress in our own lives.
压力是一种担忧、恐惧或不知所措的感觉,由具有挑战性的情况或生活中的重大变化引起。并非所有的压力都是坏事,有些压力,如运动,甚至对我们有益。但是,如果压力过大或持续时间过长,就会损害我们的健康。严重的压力会引起炎症,这是人体自我保护的一种方式。炎症有助于身体愈合,但长期炎症会导致健康问题。压力还会影响大脑,使人难以清晰思考或做出正确的决定。在我们的工作中,我们将所有这些与压力有关的因素联系在一起(使用数学),以解释我们的假设:压力会通过我们的行为、语言和肢体语言--甚至通过社交媒体--在人与人之间传播,直至影响整个社会,最终影响整个地球!这是一个危险的循环,会导致更大的压力和炎症,使问题更加严重。要打破这种循环,我们每个人都需要专注于减少自己生活中的压力。
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引用次数: 0
What Kinds of Organisms Have Lived in a Lake? DNA Tells Us! 湖中生活过哪些生物?DNA 告诉我们
Pub Date : 2024-03-11 DOI: 10.3389/frym.2024.1252490
Cinthya Soledad Manjarrez-Rangel, María Cristina Del Rincón-Castro, E. Piovano, G. Zanor
There are many organisms living in lakes, for example, fish, aquatic plants, microalgae, and bacteria. But have you wondered what organisms have inhabited a lake throughout its history? Are there any species that are no longer found in the lake today? Has the ecosystem changed over time? When they die, most lake organisms leave their remains (pollen, shells, fossils, and DNA). Remains are preserved for many years in the sediments deposited at the lake bottom. Scientists are using an exciting technology that identifies organisms from DNA extracted from sediments that are over 100 years old. In this article, we will tell you how DNA is preserved in sediments at the bottom of lakes and how it is used to find out which organisms were present in the past and which are still living in a lake today.
湖泊中生活着许多生物,例如鱼类、水生植物、微藻和细菌。但您是否想过,在一个湖泊的历史长河中,曾经栖息过哪些生物?湖中是否有如今已不复存在的物种?生态系统是否随着时间的推移发生了变化?大多数湖泊生物死后都会留下遗骸(花粉、贝壳、化石和 DNA)。遗骸在湖底沉积物中保存多年。科学家们正在使用一种令人兴奋的技术,从 100 多年前的沉积物中提取 DNA 来识别生物。在本文中,我们将告诉您 DNA 是如何保存在湖底沉积物中的,以及如何利用它来找出哪些生物在过去曾存在过,以及哪些生物现在仍生活在湖中。
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引用次数: 0
How Will Climate Change Affect Pikas’ Favorite Snacks? 气候变化会如何影响鼠兔最喜欢的零食?
Pub Date : 2024-03-11 DOI: 10.3389/frym.2024.1331857
Emily Monk, Karli Weatherill, Chris Ray, Ashley Whipple, Johanna Varner
Many animals are herbivores, which means they get all their nutrients from eating plants. American pikas are cute rabbit relatives that eat plants in the mountains. But alpine winters are harsh, so pikas spend their entire summer gathering and storing plants to eat under the winter snow. Just like people, pikas in Colorado have a favorite food: a plant called alpine avens. This plant species is a special pika snack because it contains natural preservatives called phenolics, which keep the food fresh all winter. We studied how climate change is affecting this important feature of the pika’s favorite meal. Alpine avens contains more phenolics now than it did 30 years ago, so they preserve better in storage. But there is a catch: these preservatives can be hard to digest. Studies like this help us start to understand the many complicated ways that climate change affects herbivores like pikas.
许多动物都是食草动物,这意味着它们的所有营养都来自于吃植物。美洲鼠兔是一种可爱的兔子亲戚,在山区以植物为食。但是高山地区的冬天非常严寒,所以美洲鼠兔整个夏天都在收集和储存植物,以便在冬天的雪地里食用。就像人类一样,科罗拉多州的鼠兔也有一种最喜欢的食物:一种叫做高山avens的植物。这种植物是鼠兔的一种特殊零食,因为它含有一种叫做酚类的天然防腐剂,可以让食物在整个冬天都保持新鲜。我们研究了气候变化如何影响鼠兔最喜欢的食物的这一重要特征。与 30 年前相比,现在的阿尔卑斯山牛油果含有更多的酚类物质,因此它们在储存过程中保存得更好。但有一个问题:这些防腐剂很难消化。这样的研究有助于我们开始了解气候变化对鼠兔等食草动物的诸多复杂影响。
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引用次数: 0
What Can Tree Swallows Teach Us About Biology? 树燕能告诉我们哪些生物学知识?
Pub Date : 2024-03-11 DOI: 10.3389/frym.2024.1274157
Colleen R. Miller, Jennifer L. Houtz, Nicole Mejia, Natalie J. Morris, M. Pipkin, Anusha Shankar, Jennifer J. Uehling, Jessie L. Williamson, Maren N. Vitousek
Tree swallows are North American birds that can help us understand more about biology. We already know a lot about tree swallows because they are easy to work with. These birds are popular for scientists to study. We know a lot about bird health, migration, and nesting because of tree swallows. However, tree swallows are declining because of climate change, insect loss, and habitat destruction. You can help by becoming a community scientist! Tree swallows are fascinating birds that everyone can help conserve. And along the way, we can learn more about our world.
树燕是北美鸟类,可以帮助我们了解更多生物学知识。我们已经对树燕有了很多了解,因为它们很容易研究。这些鸟类很受科学家的研究。因为树燕,我们对鸟类的健康、迁徙和筑巢有了很多了解。然而,由于气候变化、昆虫损失和栖息地破坏,树燕的数量正在减少。您可以通过成为社区科学家来帮助我们!树燕是一种迷人的鸟类,每个人都可以帮助保护它们。在此过程中,我们可以更多地了解我们的世界。
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引用次数: 0
How Certain Soil Bacteria Can Help Plants Grow Better 某些土壤细菌如何帮助植物更好地生长
Pub Date : 2024-03-11 DOI: 10.3389/frym.2024.1227902
Muhammad Shoib Nawaz, Muhammad Suleman, Barbara J. Campbell
Often, the first thing that comes to mind when we think about bacteria is that they are harmful and cause diseases. However, this is not entirely true. Almost all bacteria are beneficial to humans, animals, or plants. In this article, we focus specifically on the bacteria that benefit plants. You may be surprised to learn that these bacteria are not just helpful to plants, but essential for plant survival. These beneficial bacteria provide plants with necessary nutrients from the soil, reduce the effects of environmental stresses, and protect plants from harmful bacteria and other enemies. That is why these bacteria are known as plant growth-promoting bacteria. As you read, you will learn about the functions and mechanisms of these essential bacteria.
通常情况下,一提到细菌,我们首先想到的就是它们是有害的,会导致疾病。然而,这并不完全正确。几乎所有细菌都对人类、动物或植物有益。在本文中,我们将特别关注对植物有益的细菌。您可能会惊讶地发现,这些细菌不仅对植物有益,而且对植物的生存至关重要。这些有益细菌从土壤中为植物提供必要的养分,减轻环境压力的影响,保护植物免受有害细菌和其他敌人的侵害。因此,这些细菌被称为植物生长促进菌。在阅读过程中,您将了解到这些基本细菌的功能和机制。
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引用次数: 0
Body Image During Puberty: What Happens to How Kids Feel About Their Bodies? 青春期的身体形象:孩子们对自己身体的感觉会发生什么变化?
Pub Date : 2024-03-08 DOI: 10.3389/frym.2024.1178387
Savannah R. Roberts, S. Gorrell, Daniel Le Grange
Adolescence, the period between childhood and adulthood, is a time when significant changes happen to the human body. These changes, called puberty, signify the time during which humans develop into adults. During puberty, changes in weight, height, and muscle size leave many adolescents feeling unhappy with their appearance. We describe how these changes affect body image, which is the way that adolescents feel about their bodies. First, we discuss how a negative body image can be a risk factor for eating disorders and depression. Second, we highlight the body positivity movement, which encourages people to love their bodies no matter what they look like. Lastly, we describe body neutrality, an attitude that celebrates bodies for what they allow us to do, rather than for their appearance. Together, these body image concepts can help people to understand how physical changes that accompany puberty might affect mental health.
青春期是介于童年和成年之间的时期,是人体发生重大变化的时期。这些变化被称为 "青春期",是人类成长为成年人的标志。在青春期,体重、身高和肌肉尺寸的变化让许多青少年对自己的外貌感到不满意。我们将描述这些变化如何影响身体形象,也就是青少年对自己身体的感觉。首先,我们讨论了消极的身体形象如何成为饮食失调和抑郁的风险因素。其次,我们强调了 "身体积极性运动",该运动鼓励人们无论自己的外貌如何,都要热爱自己的身体。最后,我们介绍了身体中性,这是一种赞美身体的态度,因为它们能让我们做什么,而不是因为它们的外表。这些身体形象概念可以帮助人们理解青春期伴随的身体变化会如何影响心理健康。
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引用次数: 0
Seed Banks: Storing the World’s Plants for the Future 种子银行:为未来储存世界植物
Pub Date : 2024-03-08 DOI: 10.3389/frym.2024.1204137
Davide D’Angelo, Olga Cannavacciuolo, F. Taranto, Nunzio D’Agostino
Although you may have visited a bank in your lifetime, maybe to deposit or withdraw money, it is likely that you have never been to a seed bank. These buildings do not contain money or gold bars but instead hold something even more precious: the seeds or other materials of plants belonging to over 50,000 species—~12.5% of all known plant species. Human pressures on natural ecosystems threaten many plants, and protecting the vast array of plant life on Earth is critical for assuring that we can grow enough food for everyone on the planet in the years to come. For this reason, scientists have thought of freezing seeds and/or other parts of plants to preserve them and make them available for the future. Seed banks also allow scientists to study the history of certain plants, and these banks can provide them with the resources needed to change some plant traits in helpful ways.
虽然您一生中可能去过银行,也许是为了存钱或取钱,但您很可能从未去过种子银行。这些建筑里存放的不是金钱或金条,而是更为珍贵的东西:5 万多种植物的种子或其他材料--约占所有已知植物物种的 12.5%。人类对自然生态系统的压力威胁着许多植物,而保护地球上种类繁多的植物生命对于确保我们能够在未来的岁月里为地球上的每个人种植足够的食物至关重要。因此,科学家们想到了冷冻种子和/或植物的其他部分,以保存它们,供未来使用。种子库还能让科学家研究某些植物的历史,这些种子库还能为他们提供必要的资源,以有益的方式改变某些植物的性状。
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引用次数: 0
Meet BioSentinel: The First Biological Experiment In Deep Space 认识 BioSentinel:首个深空生物实验
Pub Date : 2024-03-06 DOI: 10.3389/frym.2024.1227860
Shirin Rahmanian, Tony Slaba, Tore Straume, Sharmila Bhattacharya, S. R. Santa Maria
Recently, NASA launched a rocket called Artemis-I toward the Moon! The mission objective was to test the safety of the Space Launch System for future human travel into deep space. But vehicle safety is not the only concern for space travelers. Space radiation is an invisible danger to astronauts because it can damage the body’s cells and potentially lead to serious health problems. How do we study the effects of space radiation on cells? Meet BioSentinel! BioSentinel is a small satellite deployed from Artemis-I that carries yeast cells and a sensor to measure space radiation. The job of BioSentinel is to transmit data from the cells in deep space back to Earth. In this article, we will explore the BioSentinel mission, discuss how the data are obtained and transmitted, and give examples of how the data from BioSentinel will help scientists better understand the effects of space radiation on living things.
最近,美国国家航空航天局向月球发射了一枚名为 "阿耳特弥斯一号 "的火箭!这次任务的目的是测试太空发射系统的安全性,以便未来人类进入深空旅行。但是,飞行器的安全并不是太空旅行者唯一关心的问题。太空辐射对宇航员来说是一种无形的危险,因为它会损害人体细胞,并可能导致严重的健康问题。我们该如何研究太空辐射对细胞的影响呢?我们来认识一下 "生物哨兵"!生物哨兵 "是一颗从 "阿耳特弥斯一号 "上发射的小型卫星,它携带有酵母细胞和一个测量太空辐射的传感器。生物哨兵的任务是将深空细胞的数据传输回地球。在本文中,我们将探讨 "生物哨兵 "任务,讨论如何获取和传输数据,并举例说明 "生物哨兵 "的数据将如何帮助科学家更好地了解太空辐射对生物的影响。
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引用次数: 0
Bees Could Visit Flower “Pharmacies” When They Are Sick 蜜蜂生病时可以去花卉 "药房 "看病
Pub Date : 2024-03-06 DOI: 10.3389/frym.2024.1293746
Antoine Gekière, M. Vanderplanck
When you are sick, you might go to the pharmacy to get some medicines. But have you ever wondered what do animals do when they are sick? Bees are tremendously important given the roles they play in the environment and human societies. Unfortunately, bees have been declining in the last decades, partly due to infection by parasites. But certain flowers may help them! Bees collect resources from various flowers and, recently, scientists have shown that some of these flower resources could help bees fight infections. Flower resources contain many essential nutrients as well as very specific medicines that could strengthen the bees or kill the parasites. Once sick, bees could prioritize the collection of resources from specific flowers to deal with their parasites and heal themselves. It is therefore important for us to plant flowers rich in essential nutrients, as well as flowers rich in medicines that help bees to thrive and fight off infections.
生病时,您可能会去药房买药。但您是否想过,动物生病时会做些什么?蜜蜂在环境和人类社会中扮演着非常重要的角色。不幸的是,在过去的几十年里,蜜蜂的数量一直在减少,部分原因是受到寄生虫的感染。但是,某些花朵可能会帮助它们!蜜蜂从各种花朵中收集资源,最近,科学家们发现,其中一些花朵资源可以帮助蜜蜂抵抗感染。花卉资源中含有许多必需的营养物质以及非常特殊的药物,可以增强蜜蜂的体质或杀死寄生虫。一旦生病,蜜蜂可以优先从特定的花朵中收集资源,以对付寄生虫并治愈自己。因此,我们必须种植富含必需营养物质的花朵,以及富含有助于蜜蜂茁壮成长和抵抗感染的药物的花朵。
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Frontiers for young minds
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