{"id":115083,"date":"2024-10-17T06:49:45","date_gmt":"2024-10-16T23:49:45","guid":{"rendered":"https:\/\/hotvideos24.online\/?p=115083"},"modified":"2024-10-17T06:49:45","modified_gmt":"2024-10-16T23:49:45","slug":"amazing-30-year-experiment-captures-evolution-happening-in-real-time","status":"publish","type":"post","link":"https:\/\/hotvideos24.online\/?p=115083","title":{"rendered":"Amazing 30-year experiment captures evolution happening in real time"},"content":{"rendered":"<p> <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<\/p>\n<div>\n<div class=\"post-featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"575\" src=\"data:image\/svg+xml,%3Csvg%20xmlns=\" http:=\"\" alt=\"Crab and Wave\" data-lazy-src=\"https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/Crab-and-Wave.jpg\"\/><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"575\" src=\"https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/Crab-and-Wave.jpg\" alt=\"Crab and Wave\"\/><\/p>\n<p class=\"post-featured-image-caption\">Two ecotypes of Littorina saxatilis marine snails, adapted to different environments. The Crab ecotype (left) is larger and wary of predators. The Wave ecotype (right) is smaller and has bold behavior. \u00a9 David Carmelet<\/p>\n<\/div>\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p><strong>KLOSTERNEUBURG, Austria \u2014 <\/strong>Normally, scientists have believed that it takes countless centuries for evolution to produce major changes in any species. However, a new study has witnessed this amazing process unfold in a figurate blink of an eye.<\/p>\n<p>A team of researchers from the Institute of Science and Technology Austria (ISTA) and Norway\u2019s Nord University have observed marine snails evolve to closely resemble their predecessors over just 30 years \u2013 which is a tiny fraction of time in evolutionary terms.<\/p>\n<p>The story begins in 1988 when a <a href=\"https:\/\/studyfinds.org\/warming-pool-pacific-ocean\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-wpel-link=\"internal\">toxic algal bloom<\/a> wiped out populations of marine snails from small rocky outcrops, known as skerries, in the Koster archipelago near the Swedish-Norwegian border. While this environmental disaster might have seemed insignificant to most, for marine ecologist Kerstin Johannesson from the University of Gothenburg, it presented a unique opportunity to study evolution in action.<\/p>\n<p>Four years after the algal bloom, in 1992, Johannesson decided to reintroduce snails to one of these now-empty skerries. Here\u2019s the twist: instead of bringing back the same type of snails that previously lived there, she introduced a distinctly different population of the same species, <em>Littorina saxatilis<\/em>.<\/p>\n<\/div>\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>These <a href=\"https:\/\/studyfinds.org\/sea-snail-venom-diabetes\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-wpel-link=\"internal\">marine snails<\/a>, commonly found along North Atlantic shores, have evolved different traits to suit their specific environments. The two main types are known as \u201cWave snails\u201d and \u201cCrab snails.\u201d <strong>Wave snails<\/strong>, which originally inhabited the skerries, are small with thin shells, large, rounded openings, and bold behavior \u2013 adaptations that help them survive in wave-battered environments. <strong>Crab snails<\/strong>, on the other hand, are larger with thicker shells, smaller elongated openings, and more cautious behavior \u2013 traits that protect them from crab predators in calmer waters.<\/p>\n<p>Johannesson\u2019s experiment involved introducing Crab snails to the skerry that had previously been home to Wave snails. The question was: How would these Crab snails adapt to their new wave-exposed environment?<\/p>\n<\/div>\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>The results published in the journal <em><a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.adp2102\" target=\"_blank\" rel=\"noreferrer noopener nofollow external\" data-wpel-link=\"external\">Science Advances<\/a><\/em> were nothing short of remarkable. Within just a few generations \u2013 snails reproduce once or twice a year \u2013 scientists began to see <a href=\"https:\/\/studyfinds.org\/city-dwelling-creatures-adapt\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-wpel-link=\"internal\">evidence of adaptation<\/a>. Over the course of 30 years, the transplanted Crab snails evolved to closely resemble the Wave snails that had inhabited the skerry before the algal bloom.<\/p>\n<p>\u201cOver the experiment\u2019s 30 years, we were able to predict robustly what the snails will look like and which genetic regions will be implicated. The transformation was both rapid and dramatic,\u201d says Diego Garcia Castillo, a graduate student at ISTA and one of the study\u2019s lead authors, in a <a href=\"https:\/\/ist.ac.at\/en\/news\/evolution-in-real-time\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow external\" data-wpel-link=\"external\">media release<\/a>.<\/p>\n<\/div>\n<div class=\"wp-block-group has-octonary-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"429\" src=\"data:image\/svg+xml,%3Csvg%20xmlns=\" http:=\"\" alt=\"snail evolution\" class=\"wp-image-135973\" data-lazy-srcset=\"https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution.jpg 1000w, https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution-475x204.jpg 475w, https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution-768x329.jpg 768w, https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution-400x172.jpg 400w\" data-lazy-sizes=\"(max-width: 1000px) 100vw, 1000px\" data-lazy-src=\"https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution.jpg\"\/><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"429\" src=\"https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution.jpg\" alt=\"snail evolution\" class=\"wp-image-135973\" srcset=\"https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution.jpg 1000w, https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution-475x204.jpg 475w, https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution-768x329.jpg 768w, https:\/\/studyfinds.org\/wp-content\/uploads\/2024\/10\/snail-evolution-400x172.jpg 400w\" sizes=\"(max-width: 1000px) 100vw, 1000px\"\/><figcaption class=\"wp-element-caption\">Snail evolution in the making. Crab-ecotype snails (1992) evolved to strikingly resemble the lost Wave-ecotype snails on a skerry. \u00a9 ISTA, images by Kerstin Johannesson<\/figcaption><\/figure>\n<\/div>\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>What makes this study particularly fascinating is that the snails didn\u2019t evolve these new traits from scratch. Instead, they tapped into genetic diversity that was already present in their population, albeit at low levels. This existing genetic variation, combined with possible <a href=\"https:\/\/studyfinds.org\/friends-genes-effect-on-your-life\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-wpel-link=\"internal\">gene flow<\/a> from neighboring Wave snail populations, allowed for rapid adaptation to the new environment.<\/p>\n<p>The implications of this study extend far beyond the world of snails. In an era of rapid environmental change, understanding how species <a href=\"https:\/\/studyfinds.org\/evolution-speeding-up-extra-artery\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-wpel-link=\"internal\">can adapt quickly is crucial<\/a>.<\/p>\n<p>\u201cThis work allows us to have a closer look at repeated evolution and predict how a population could develop traits that have evolved separately in the past under similar conditions,\u201d explains Garcia Castillo.<\/p>\n<\/div>\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>Anja Marie Westram, a researcher at Nord University and co-corresponding author of the study, emphasizes the importance of genetic diversity in adaptation.<\/p>\n<p>\u201cNot all species have access to large gene pools and evolving new traits from scratch is tediously slow. Adaptation is very complex and our planet is also facing complex changes with episodes of weather extremes, rapidly advancing climate change, pollution, and new parasites,\u201d says Westram. \u201cPerhaps this research helps convince people to <a href=\"https:\/\/studyfinds.org\/mass-extinction-never-happened\/\" target=\"_blank\" rel=\"noreferrer noopener\" data-wpel-link=\"internal\">protect a range of natural habitats<\/a> so that species do not lose their genetic variation.\u201d<\/p>\n<p>As our planet faces complex changes, including extreme weather events, climate change, pollution, and new parasites, the ability of species to adapt quickly could be the key to their survival. This study provides a glimpse into how evolution can work on relatively short timescales, offering hope for species facing rapid environmental changes.<\/p>\n<p>Today, the snail population on the experimental skerry has grown to around 1,000 individuals, a testament to their remarkable ability to adapt and thrive in new conditions. As we continue to grapple with environmental challenges on a global scale, the lessons learned from these tiny marine snails could prove invaluable in understanding and potentially predicting how species might respond to our changing world.<\/p>\n<\/div>\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-quaternary-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\" id=\"h-paper-summary\">Paper Summary<\/h2>\n<h4 class=\"wp-block-heading\" id=\"h-methodology\">Methodology<\/h4>\n<p>In this study, researchers wanted to see if they could predict how a population of marine snails, <em>Littorina saxatilis<\/em>, would adapt to a new environment. To do this, they moved snails from a habitat dominated by crab predators to a location where strong waves shaped the environment. This took place on the Swedish coast, where a small, rocky islet served as the testing site. The snails were observed over 30 years to track how their physical traits (like shell size and shape) and genetic makeup changed.<\/p>\n<p>The study focused on whether the changes in shell traits and genes would match what researchers had already observed in snails that had naturally adapted to different habitats in other places. They predicted changes in physical features, the frequency of specific genetic traits, and the arrangement of chromosomes over time.<\/p>\n<h4 class=\"wp-block-heading\" id=\"h-key-results\">Key Results<\/h4>\n<p>The researchers saw dramatic changes in the snails that were transplanted to the wave-dominated habitat. Over time, the snails started looking more like the local population that had naturally evolved in wave-heavy environments. For example, their shells became thinner, with different shapes and patterns compared to the thicker, more protective shells of snails from the crab habitat.<\/p>\n<p>Genetically, many of the changes researchers predicted also came true. The genes associated with survival in a wave-heavy environment became more common. Overall, the snails adapted quickly, and within just a few years, they looked and acted much more like the wave-adapted snails.<\/p>\n<h4 class=\"wp-block-heading\" id=\"h-study-limitations\">Study Limitations<\/h4>\n<p>First, the study took place in a very specific environment, which means the results might not apply to all types of environmental changes. The waves and crabs represent only one set of natural pressures, and other factors like temperature changes or pollution could affect the snails differently.<\/p>\n<p>Also, the study focused on a specific snail species and might not apply to other organisms. Finally, because the researchers had to rely on occasional sampling over 30 years, there might be gaps in the data that didn\u2019t capture all the subtleties of how the snails were changing.<\/p>\n<h4 class=\"wp-block-heading\" id=\"h-discussion-amp-takeaways\">Discussion &amp; Takeaways<\/h4>\n<p>The key takeaway from this study is that we can predict how populations might adapt to environmental changes based on what we know about their genetic variation and how they\u2019ve adapted in other places. The snails in this experiment adapted quickly, showing that species with existing genetic diversity can survive rapid environmental changes.<\/p>\n<p>This is an important finding in the context of climate change and other human-caused environmental shifts. However, the study also highlights that this type of predictability might not hold in all situations, especially when the environmental changes are entirely new or extreme.<\/p>\n<h4 class=\"wp-block-heading\" id=\"h-funding-amp-disclosures\">Funding &amp; Disclosures<\/h4>\n<p>This project received support from various sources, including the Norwegian Research Council, the Swedish Research Council, the European Research Council, the Austrian Science Fund, and the Portuguese Foundation for Science and Technology. The research involving animals was conducted in Sweden, following strict regulations for animal treatment in scientific studies. No significant conflicts of interest were declared by the researchers.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<br \/><div data-type=\"_mgwidget\" data-widget-id=\"1660802\">\r\n<\/div>\r\n<script>(function(w,q){w[q]=w[q]||[];w[q].push([\"_mgc.load\"])})(window,\"_mgq\");\r\n<\/script>\r\n<br \/>\n<br \/><a href=\"https:\/\/studyfinds.org\/snail-evolution-in-real-time\/\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Two ecotypes of Littorina saxatilis marine snails, adapted to different environments. The Crab ecotype (left) is larger and wary of predators. The Wave ecotype (right) is smaller and has bold &hellip; <a href=\"https:\/\/hotvideos24.online\/?p=115083\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8628],"tags":[],"class_list":["post-115083","post","type-post","status-publish","format-standard","hentry","category-science","entry"],"_links":{"self":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/115083","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=115083"}],"version-history":[{"count":0,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/115083\/revisions"}],"wp:attachment":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=115083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=115083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=115083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}