salmon

Salmon have never taken so long to reach Asturias. And yes, it is as worrying as it seems

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14 days. That is, two weeks after the season opened, we are still waiting for the capture of the ‘campanu’the first salmon to be traced by any of the five Asturian salmon farms. Whatever appears when it appears, it will be the latest campaign in history. No one is surprised that the Ministry have requested an expert report to decide whether to classify the species as “endangered.” What has happened? On Saturday, April 18, 2026, two weeks later than the traditional date, the season opened. The counseling deliberately delayed the start to “accumulate more salmon entries” (in the same way that reduced the number of specimens that can be caught to 154): after all, last year only 472 specimens were detected in the entire Principality. And the problem is not only Asturian. In Cantabria (where 38 salmon can be caught) none have been caught either. Although it must be pointed out that in the Cantabrian rivers the ban opened this May 1st. And in Galicia a total ban was declared for 2026 (although some exceptions have been made). Why is all this happening? The causes are well known: we are talking about things like river fragmentation, pollution (agricultural, industrial and urban), the effects of aquacultureuncontrolled repopulation, invasive species and, of course, climate change. So, are we going towards a total ban? The truth is that no one can know. Especially because we have a very close precedent: Spain has repeatedly refused to ban eel fishing despite the fact that all scientific reports say that it must be done. In favor of the salmon it plays that, thanks to the farms, the money that the wild moves is rather symbolic. But the paths of agricultural regulation in an election year are inscrutable. What is clear is that these are not good times for wild salmon. Not in Spain, not anywhere. In Norway, for example, only 323,000 wild salmon were observed in 2024. The previous year, the figures They amounted to 481,463 copies. In Scotland, another of the great salmon-growing countries, the population of wild specimens has fallen by 80% since the 70s; and, in the Faroes, the total ban is on the table. As we said recently, there have never been more salmon in the world. And, for that reason, this species has never been closer to disappearing in the wild. Image | Brandon In Xataka | We are drugging the salmon with cocaine and anxiolytics. And that’s causing them to behave strangely.

There have never been more salmon in the world. It’s time we declare them a threatened species

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Last year, global production of farmed Atlantic salmon amounted to 3.12 million tonnes. That amount is 8,000 times the catch of wild salmon and it is logical: to the extent that aquaculture has become the “pretty girl” of the fishing industry, these are not good times for wild salmon. And no, it is not something that only affects the cold waters of the Norwegian fjords. In Spain, in 2024, only 130 copies were sealed. He all-time low since control of the Asturian rivers began in 1949. And lthe situation is going to get worse. Why is it going to get worse? The reason it’s not obvious. When we talk about this problem, the first intuition is to think that it is a simple question of ‘attention’. Before we needed to take care of wild salmon habitats to ensure we could catch them. Now that aquaculture has made the wild supply dispensable, the incentives to maintain it have disappeared. But, in reality, it is worse. Because the truth is that the dynamics of aquaculture are actively working on the collapse of the wild population. We have well located the three big problems: 1) the hybrid salmon escapes (who have better farm fitness, but worse ocean survival) than They mix with wild animals and produce genetic problems.2) the spread of sea ​​louse because the concentration of fish in cages amplifies the parasite load and, finally, 3) the need for forage fish to feed the farms removes resources for other fish. And the consequences are visible to all. In Asturias it is not only that the season has started two weeks later than usual, it is that the first salmon (campanu) the latest day in history has arrived. But that’s only part of the story. In Norway, for example, only 323,000 wild salmon were observed in 2024. The previous year, the figures They amounted to 481,463 copies. In fact, last year fishing was prohibited in 42 rivers and three fjords. In Scotland, another of the great salmon-growing countries, the population of wild specimens has fallen by 80% since the 1970s. Is it only a problem related to aquaculture? No, it would be unfair to say this. The decline is global and has a lot to do with climate and food chain problems. But the evidence tells us that not even repopulating is of any use: we have been taking counterproductive initiatives for decades that reduce genetic diversity and make the species increasingly fragile. Image | Bruce Warrington In Xataka | We are drugging the salmon with cocaine and anxiolytics. And that’s causing them to behave strangely.

Some Swedish scientists decided to drug salmon with cocaine and then release them. It happened just what was expected

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There is more than just fish and algae in the world’s rivers. More or less diluted amounts of chemicalsincluding pesticides, pharmaceuticals and illegal drugs. He checked it a few years ago a team from King’s College that, after taking samples in various parts of the county of Suffolk, in England, found cocaine and ketamine residues. Researchers have long known that wildlife is exposed to these compounds, but one question remained: How do drugs affect them in their natural environment? To find out in Sweden have drugged to dozens of salmon. Drugging salmon? That’s how it is. It sounds strange, but it is exactly what a group of scientists from Griffith University, the Zoological Society of London and the Max Planck Institute, among other organizations, have done. They basically took 105 salmon (salmo salar) from a fish farm, they divided them into several groups and added implants that supplied them with drugs. Then they released them. More or less as in the famous case of Cocaine Bearbut in a planned way. How did they do it? 35 of those salmon were implanted with a special device that slowly released coca into their bodies. A similar system was incorporated into others, although modified to provide benzoylecgoninethe main metabolite of cocaine. The third group did not receive any substance to act as a control. Once prepared, the salmon, all young specimens, were released into Lake Vätternsouth of Sweden. For eight weeks the researchers dedicated themselves to finding out how each group behaved. The specimens in the experiment wore a special tracking device, so (with the help of sensors installed around the lake) scientists could follow their trail and calculate how far they swam. And what did they find out? That the drugged salmon behaved very differently from the ‘sober’ ones. Especially those who received benzoylecgonine. After releasing the fish on the southwest bank of the Vättern, the researchers found that the salmon exposed to coca swam on average five more kilometers than the ‘clean’ ones, a considerable difference that falls short, however, when the specimens to which the metabolite was supplied are analyzed. They swam almost 14 km more, which led them to enter the northern area of ​​the lake. “The team found that fish exposed to benzoylecgonine swam up to 1.9 times farther per week than those not exposed and dispersed up to 12.3 km farther,” duck Griffith University. The agency also clarifies that the changes “became more evident” as the days passed, which shows that exposure to coca alters the behavior of fauna. Why is it important? Let the drugged salmon swim more kilometers and cover more space than others without ‘doping’ is more important than it may seem. These behavioral changes influence aspects such as what places the fish occupy, where they feed or the risks they face. More kilometers also translates into greater physical effort, which forces the salmon to look for more sources of nutrition to recover energy. “Where fish go determines what they eat, what eats them, and how populations are structured,” comment Dr. Marcus Michelangeli. “If pollution is driving these patterns, it has the potential to affect ecosystems in ways we are only beginning to understand.” But that was already known, right? Yes. And no. We knew that aquatic fauna is exposed to the drugs that we consume. The 2019 study in Suffolk and others, such as the made in 2016 in Puget (Washington), during which researchers detected traces of Prozac, Lipitor and cocaine in the body of salomes. We also knew that these substances alter the behavior of wildlife. In fact, scientists they already checked how water fleas exposed to coca swim faster or crabs are more reckless. The really interesting thing about the study carried out in Sweden is that it has allowed us to go one step further: to leave the laboratories, which were the isolated space in which these types of experiments had been carried out until now, and carry out research in natural environments and the same conditions that fauna is found. It hasn’t been easy. Although the team guarantees that the entire experiment has been done in safe conditions for the ecosystem and humans. Obtain all necessary permits, they confess researchers, it was “a tedious process.” And what to do now? Dr. Jack Brand, from the Swedish University of Agricultural Sciences, recognize that more studies are needed to fully understand the consequences of pollution in rivers, lakes and seas. It is an important issue, among other reasons because the substance that has most altered salmon is benzoylecgonine, which has a special impact. “It was the metabolite, which we know is found in higher concentrations in nature, that had a much more profound effect on the behavior and movement of the fish,” warns in statements to Guardian. “This suggests that if we perform evaluations without including compounds such as these metabolites and their derivatives, we could be overlooking an important part of the environmental risks to which we expose these animals.” Images | Colin Davis (Unsplash), Katmai National Park and Preserve (Flickr) and Scazon (Flickr) In Xataka | In 2001, a yacht took refuge on a remote island in the Atlantic. Days later its inhabitants breaded fish with coca

70% of the world’s salmon comes from farms and their meat should be gray. The industry has been making sure you don’t notice for decades

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In the heart of Tjuvholmen, a small neighborhood located on an even smaller peninsula that runs from Aker Brygge towards the Oslo Fjord, lies The Salmon. It is a restaurant, yes; but above all, it is an interpretation center for Norwegian salmon. There, just before enjoying two dozen different preparations, facilitators explain in detail “the entire salmon process – from smoking to export” and explain to diners “the historical development of salmon farming.” And it is logical. 70% of the salmon consumed in the world comes from aquaculture. Only in the North Atlantic, farms produced more than three million of metric tons in 2025 and Norway is (by far) the main producer. They explain all this in The Salmon; What they don’t explain is the color. Le Salmon, 1866–1869, by Édouard Manet The color? Salmon, in the cultural imagination of the entire world, has a very specific color: a pinkish-orange which, in short, is what we have been calling salmon color. The curious thing is that, under normal conditions, the meat of farmed salmon would be pale gray or whitish. And the reason is very simple: the characteristic color of wild salmon depends on the diet. They are big fans of krill, shrimp and other crustaceans which, in turn, feed on microalgae that produce astaxanthin. That’s what gives them the color. Instead, farmed salmon are fed feed composed of fishmeal, oil, soy, corn gluten and other poultry by-products. None of them have astaxanthin naturally and, therefore, they could not acquire their iconic color. And that, of course, is a problem. Early farmed salmon producers realized that color was difficult to manage. It is true that there is a wild salmon native to Alaska that does not naturally fix astaxanthin in its meat and is sold as a gourmet product. But that is one thing and trying to convince millions of people that this farmed pale salmon is the same (or better) than the wild one is another. Since the 1980s, researchers and producers got to work, discovered the origin of the problem and introduced chemically synthesized astaxanthin into the food chain of farmed salmon. It’s not cheap: these additives represent between 6 and 20% of the cost total feed. But it is necessary. And, by the way, they “tint” them, like the Astaxanthin is a powerful antioxidantfish improve liver function, immune response, fertility and resistance to oxidative stress. And why should we care about all this? Spain is the second largest consumer of fish and seafood in the EU; Salmon, in fact, is one of the most consumed species. The color of salmon is something well known (and completely safe), but it is not something that is usually advertised: the fear of growing distrust towards farmed fish is always there. One of the great food paradoxes of our time. Producers, in fact, have been saying for years that they would lower the amount of astaxanthin if consumers agreed to buy paler salmon. But that doesn’t seem like it’s going to happen: as we’ve seen time and time again, food depends critically on fashions and trends. this pink is in fashion. Image | Katja Ano In Xataka | We are drugging the salmon with cocaine and anxiolytics. And that’s causing them to behave strangely.

The US already has the first salmon cultivated in the laboratory. It is a relief for wipes who ask for the time

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The world is hungry for fish, but goes through areas. In Spain, Consumption is downhillso much that fishmongers want to reinvent themselves to serve our pets Before us. In other countries, such as China, That hunger is voraciousto the point that your folders They have been small And they are Going for those of Latin America. To avoid folding, there are those who investigate “alternative proteins”, And in the United States they have already developed the first salmon cultivated in the laboratory that is served in a restaurant. And with a series of advantages that does not really have salmon. Fish hunger. The forecasts They point out that the global aquatic food consumption will double by 2050 compared to the 2015 levels. That will imply that it will go from about 80 million tons annually to almost 155 million tons. The problem is that production must follow the rhythm. It is something promoted by population growth, the improvement of quality of life in certain countries and the development of aquaculture. As we say, China has a role in this story because it is not only the largest world consumer of fish, but it is also creating huge ships to raise new fish. And in Africa also An increase in demand is being seen. According to the FAOto maintain consumption until 2050, total production should increase by 22%, and is a capital challenge. That’s where the laboratory alternative becomes interesting. Cultivating salmon. Wildtype It is a company that has attracted to investors Like Jeff Bezos, Mandamás de Amazon, but also actors such as Leonardo DiCaprio or Robert Downey JR. Currently, they operate a factory in San Francisco and have just launched the ‘Saku’. This is cultivated salmon that is designed to eat when Sashimi stylewith a texture, flavor and ‘freshness’ comparable to really salmon. Here the key is to know how this salmon has been cultivated (it becomes weird to speak in those terms of a fish). The researchers extracted real salmon cells, specifically from salmon coho in their fry stage. In BIORREACTORS And using a patented “nutrient mixture”, cultivate those cells, combining the resulting cell mass with vegetable ingredients to replicate both the texture and the taste of traditional salmon. As they expose in The Washington Posta salmon can take about two years to mature, but in two weeks a 220 grams “fish” block can be created with the Wildtype method. And claim that it has a nutritional and omega-3 profile similar to that of wild salmon. One from Saku “NO OBJECTION”. And what do agencies that decide what enters, and what not, in circulation in the United States think? Well, they have no objections. ” Each country or region has a health entity that is the one that establishes a regulation that allows certain substances and products to be present in what we eat. They do not always agree, but if a product wants to enter a market, it must pass under the magnifying glass of that body. In the case of the United States, it is the FDA (Food and Medicines Administration of the United States) that, at the end of May, He gave permission to Wilkdtype so that your cultivated salmon is marketed. With that success, the cultivated salmon has already debuted in Kanna famous Haitian restaurant located in Portland, but it is expected that little by little it will arrive at more restaurants and shops in the form of ‘false’ packaging. Looking at the advantages. As with the coffee without coffeesalmon without salmon will allow maintaining the production of a very consumed food, but without continuing to measure in some wipes that agonize. But as important as sustainability, reduction of overfishing and habitat destruction which implies, is the issue of food security. This ‘Saku’ occurs in a production environment controlling, which minimizes exposure to pollutants, parasites and something that, unfortunately, is present in practically everything we eat, but above all the food from the sea: The microplastics. And another from Saku And the fishermen? When something that replaces something already established, the first question that comes to mind is what will happen to what moves to give way to the new. We have seen it from the Industrial Revolution, with AI and to Wimbledon with the Line judges being replaced by a computer. And, in this case, the question is whether something like this seeks to replace fishermen. Justin Kolceck is the co -founder of Wildtype and, in this article of the Washington Post, he comments that they do not seek to put fishermen outside the business or “eliminate the need for aquaculture. The amount of fish consumed is booming and the projections are so high that we will really need all the production we are doingin addition to the traditional and some more help in the world of plants to meet demand. For my part, I only have to add that in some Spanish supermarkets there is already salmon based on plants and oil and, although it reminds the taste of the animal, the texture does not look like. Maybe that Saku is the answer … Image | Lou Stejskal In Xataka | Until the 90s nobody in Japan ate sushi with raw salmon. Until a marketing campaign changed everything

China has converted salmon breeding into a high seas into an engineering feat. This latest generation ship shows it

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Half of the fish we eat is no longer fishing in an open sea. Is raised in controlled facilitiesmany times away from the coast. It is the aquaculturean industry in full expansion that today produces more Fish for human consumption that traditional fishing, According to FAO data. Spain leads this activity in the European Union, with more than 5,000 centers in operation and a diversity of species that goes from rainbow trout to the Galician mussel. And yet, the most ambitious development of this industry does not seem to be on land or close to the coast. The state agency CGTN says that China has just bounced the First intelligent aquaculture ship in the world. A floating structure that sails, breeds and processes salmon without returning to port. A floating mega -structure that reproduces the complete cycle of a fish farm The Suhai-1 is the first smart and self-sufficient aquaculture ship in the world. Its construction marks, according to its developers, the beginning of a new stage in the salmon breeding in the open sea. It measures almost 250 meters long, displaces 132,000 tons and has 15 breeding compartments capable of hosting a volume of water equivalent to 33 Olympic swimming pools. Everything is automated: From food to oxygen control, through the simulation of natural light and waste management. The project has been built by the CSSC Huangpu Wenchong Shipbuilding company. But the most surprising thing is your ability to navigate. Unlike traditional sea farms, many of them anchored to coastal areas or fixed structures on the high seas, this ship can move to areas with optimal conditions for salmon growth, such as the mass of cold water of the yellow sea (Yellow Sea). Sinas details that Suhai-1 does not need to be anchored in a fixed place. Can navigate to a maximum speed of 18 km/h and move hundreds of kilometers if the conditions of the environment require it. In case of storm, red tide or any other phenomenon, the ship can quickly move to safer areas. It also has an autonomy of 20,000 nautical miles and can operate self -sufficiently for 90 days. Interior of the Suhai-1 His first mission, in fact, will be heading towards the cold waters of the Yellow Sea, where temperatures They range between 10 and 18 degrees: The ideal range for salmon growth. The objective is clear: keep fish in their optimal surroundings since they are fry until they reach maturity. Once ready, it will not be necessary to take them to the ground for transformation: the ship itself has processing systems that allow you to file, package and preserve the fish on board, ready to be landed and distributed. According to the operating company, the product can reach Chinese markets in less than 24 hours after capture. To guarantee a controlled environment, the Suhai-1 integrates intelligent systems that They regulate five key factors: Water, oxygen, food, lighting and waste management. Everything is monitored in real time and coordinated from a centralized control center on board. Interior of the Suhai-1 The automated feeding system is responsible for storing, transporting, opening and distributing the feed (food), guided by algorithmic decisions that adjust the amount according to the growth of the fish. The constant water renewal is carried out by means of a circuit that exchanges the fluid inside with fresh marine water, adapting the pressure and flow rate. In addition, the ship has environmental sensors, underwater surveillance cameras, filtering systems and a Industrial Processing Plant capable of operating in two modalities: rapid cooling and freezing. In optimal conditions, fish can reach port and be marketed in a matter of hours. Suhai-1 is not born only as a technological flavor, but in response to increasing domestic demand. China has become in the salmon market that grows faster in the world. Only in 2024, consumption reached 1,760 million dollars, with an increase of 21% compared to the previous year. However, national production is not yet to meet that demand. Fish farms on land or fixed networks produce less than 50,000 tons per yearwhile imports remain high. Suhai-1 aspires to reduce that dependence. According to CGTN, their drivers plan to release the first fry this fall and bring the first harvest to the market around the dragon boat festival next year. China has been betting on the scale and engineering for years as a way of projecting power. There they are The three throats damits high -speed trains network –The most extensive in the world– o The trains that compete for being the fastest on the planet. Projects that respond to the same logic: overcome limits in technology, transport or energy. Suhai-1 fits that line. In Europe, aquaculture has centuries of history. The Romans already raised fish in artificial ponds. Spain adopted these practices early and consolidated an aquaculture culture that is still alive: from the Galician bats for the mussel to the southern estuaries for the lubina or the gold. Images | Jiangsu LianShen Marine Technology | Caroline Attwood In Xataka | “Lobster plague”: in the crusade of European cities against cruise ships, Cannes is now the spearhead

Salmon sperm is the new fashion ingredient in aesthetics. And no, it’s not as crazy as it sounds

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In the era of the cult of perfect skin, the aesthetic industry seems to know limits. Masks with bee venom, sera with snail drool, injections that They promise to reprogram Aging … Any compound that promises youth, elasticity or luminosity is a good formula for even Celebrities Be behind it, even if we are talking about salmon sperm. A new anti -aging elixir? Although talking about salmon sperm captures attention (and lifts eyebrows), the truth is that it does not imply directly applying reproductive cells on the skin. In statements collected by the Spanish, Dr. Araceli González, specialist in aesthetic medicine, has clarified: “This product is popularly because it allows you to obtain polynucleotides, components with great qualities to restore the skin without leaving any residue.” In this way, it helps support reparation, regeneration and collagen production on the skin. For celebrities it is not new. Personalities such as Jennifer Aniston had already undergone this type of treatments in previous years, as reported in an interview to the Wall Street Journal, where he even joked asking his estheticist: “Really? How do you get the salmon sperm?” However, what was previously a luxury curiosity, today has become a booming aesthetic trend that adds more and more followers, from dermatological clinics to Influencers In social networks. The Telva medium It has included it Among the seven major skin care trends by 2025. And the big question. How do you get? Well, the answer is more technical than biological. The PDRN is obtained by processing and purifying the DNA of the gonads (sexual organs) of the salmon. Sperm is not used as such, but the genetic material is broken in polynucleotide fragments, which are then integrated into sera, masks, injections or combinations with techniques such as microaguja or laser, according to He explained Dermatologist Mansha Sethi Thacker A Vry Well Health. A curiosity is that in Asia they usually inject it directly, while in the US they are applied topically after treatments such as exosomes or laser. Does it really work? Treatment defenders ensure that it offers visible and progressive benefits. According to Dr. Adam Friedman, a dermatologist at the George Washington University, for the same medium, it has detailed that it stimulates collagen production, improves hydration, accelerates cell regeneration and healing, and decreases inflammation and better pigmentation. For its part, the aestheticist Adeela Crown, Interviewed by the Financial Timeshe has summarized it thus: “It is a slower process, but bioestimulants such as polynucleotides make skin cells work to produce and maintain the basic components of healthy skin.” Its use in medicine. Although the boom is recent, seeing the benefits gives notes that it was already used before. As He explained Dr. Araceli González to El Español, The use of polynucleotides were already used in medical contexts to treat burns, serious injuries or even ulcers. In addition, preliminary investigations, mentioned by Varywell Health, They have indicated that they can have anti -inflammatory effects and have begun to use to stop hair loss and strengthen the scalp, with repeated treatments every few weeks. Are there side effects? Like any aesthetic treatment, it is not exempt from precautions. Dr. Richard Westreich, plastic surgeon in New York, has pointed out in The Guardian that side effects are generally mild: bruises, swelling or redness may appear, especially if the product is injected. In addition, as in every medical process there may be a risk of allergic reaction. For its part, dermatologist Emma Craythorne has warned in FT that “no current study is of high quality”, and although the results are promising, more robust clinical research is still required. A new aesthetic revolution? For many specialists, polynucleotides treatment represents a paradigm shift. Not only does it seek to correct visible signs of aging, but preserve and stimulate the natural functions of the skin. “It is a bioestimulator that does not change the volume or the shape of the face,” He explained Araceli González. Therefore, it is suitable for both young skins that seek to prevent mature skin with marked sagging signs or elastosis. In addition, it is beginning to be used in areas where other treatments do not work well, such as the lower eyelid, where botulinum toxin has no good results. Dr. Elizabeth Hawkes, an Oculoplasty specialist in London, has affirmed at ft that “polynucleotides have transformed their practice” for the security they offer in sensitive areas such as eye contour. What are the forecasts? What began as an eccentricity worthy of headlines, salmon sperm on the face, has evolved towards a trend backed by clinics, dermatologists and public figures. But between the promises of cell regeneration and the media brightness, is the question: are we facing a real scientific revolution or before another cosmetic seasonal phenomenon, camouflaged under a disruptive name? For now, science advances slower than social networks, but if something teaches us the history of beauty is that, in the search for eternal youth, no ingredient – unlikely that seems – is out of play. Image | Angela George and Unspash Xataka | People are fed up with Skincare’s thousand steps so the last Beauty trend is just one thing: exosomes

We are drugping the salmon with cocaine and anxiolytics. And that is causing them to behave strangely

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Few animals have suffered both humans and a canine breed: The Pug (or Carlino). Deliberate breeding of this type of dog has given rise to all kinds of physical malformations, with a distorted anatomy (Extremely stoking skull, exposed eyes, compressed airways and dysfunctional jaws) as a result of systematic and cruel artificial manipulation. To the list of creatures to which we make life very complicated We must add another that is adapting to our taste for drugs: salmon. First it was cocaine. June 2020. The officials of the State Agency of the Environment of North-Westphaly (LANUV) ran into a disturbing scene In a German fish farming: Atlantic salmon they were agreed frantically, tried to jump out of the water and showed a chaotic behavior That, according to experts, it could only be explained by a strong feeling of discomfort. Loomed salmon. The situation arose within the framework of a species conservation project, and due to the unusual episode, it was documented in the annual report of the agency under the title of “Salmon with cocaine”. After analyzing the water from the streams that fed the tanks, they ruled out a long list of pesticides, herbicides and common drugs, until they detected two particularly striking substances: yes, cocaine and their metabolite Benzoylecgonine. A documented reality. The clear presence of cocaine in one of the nearby streams led researchers to conclude that a drug reaction could not be discarded, much less. The most plausible hypothesis pointed to a illegal discharge Wastewater in the stream channel, a practice common In Europe and the United States, where clandestine laboratories and drug trafficking networks eliminate their waste in water bodies. Far from being an isolated case, what happened in Germany joined a growing line of investigations that document how illegal drug waste present in rivers and streams directly affect aquatic fauna. In United Kingdom, SpainCentral Europe and other regions, Identified methamphetamineMDMA and other substances at levels that, although low, are enough to alter the fish behavior. A first job. A scientific study was even further: researchers intentionally exposed trout to Methaphetamine dose Similar to those detected in rivers, and observed how they developed signs of addiction, they modified their behavior and, when they were transferred to clean environments, they had symptoms of abstinence. The experiments revealed that many drugs designed to affect the human brain also interact with the neuronal systems of other speciesgenerating unpredictable consequences. And then the anxiolytics. The salmon were much more than the coca. In one unprecedented researcha team of scientists has confirmed that drug waste circulating in rivers not only reaches aquatic species, but are modifying their behavior In full nature. The study, Posted in Sciencefollowed the migration of 279 young salmon from the Atlantic on the Dal River, in Sweden, after implementing slow -release capsules with two medications commonly found in contaminated waters: CLOBAZAMan anxiolytic of the benzodiazepines family, and Tramadolan opioid analgesic. What did they find? The researchers discovered that those salmon exposed to clobazam reached the Baltic Sea in a greater proportion than those not medicated, and did it until three times faster When crossing hydroelectric dams, raffling turbines with an unusual audacity for their species. The result surprised scientists, who expected that excess of boldness to reduce the probabilities of survival. “Artificial” courage. Although in this context the reckless behavior It seemed to facilitate migration (by shortening the time of exposure to dangerous obstacles such as turbines), experts warn that this alteration of natural behavior could have deep ecological consequences. Clobazam caused fish to adopt more individualistic behavior, less gregarious, which could increase your vulnerability before the predators once in an open sea. Parallel experiments in laboratory support this idea: the medical salmon showed Less trend To form banks, an essential collective defense strategy. This tendency to separate from the group would make them more visible and easy to hunt, which raises doubts about their long -term survival capacity, something that the study could not track once the fish reached the Baltic. Silent contamination In the background, another problem. The investigation It provides a conclusive evidence that the effects observed in laboratory with psychiatric drugs (such as a lower response to fear, loss of social behavior and increased risk taking) are also produced in natural conditionsand with doses comparable to those found in real ecosystems. The finding reinforces the concern about the called “Pharmaceutical Soup” which flows through the rivers of the world: more than 900 active pharmacological ingredients have been detected in natural waters, from antibiotics to antidepressants and chemotherapeutics. Many of these drugs act on areas of the brain common to multiple speciesso that fish and other aquatic animals are exposed to non -expected side effects, dangerous combinations and interactions still very little studied. A global threat. The researcher Karen Kidd, a specialist in ecotoxicology, underlined these days that the real risk is in the Multiple substance accumulation with different effects, whose consequences together are unpredictable. For scientists, this is a problem of Planetary scope which demands a systemic response: it is urgent to develop more advanced wastewater treatment stations, capable of eliminating these compounds before they reach the rivers, as well as promoting the design of more biodegradable medications. The key, they warn, is to act before these subtle but constant changes undermine the Ecosystems balance built for millennia. Because, although technology can continue to detect alterations, only a determined action can stop the invisible deterioration of life under water. Meanwhile, among anxiolytics that make them reckless and streams contaminated with cocaine that alter their vital pulse, the millenary fight of salmon against currents and predators has added a new and unprecedented new enemy: the invisible waste of human addictions. Image | Csiro, Pexels In Xataka | Until the 90s nobody in Japan ate sushi with raw salmon. Until a marketing campaign changed everything In Xataka | A gigantic cage 110 meters in diameter designed solely and exclusively for raising salmon: Ocean Farm 1

FDA increases the costco retired salmon consumption

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Food and medication administration (FDAfor its acronym in English) reclassified as class I the withdrawal for listeria risk of the products ACME Smoked Fish Corp, which includes the smoked salmon signature of Kirkland distributed to Costco In October. It is an FDA update that implies that the highest risk level when the product subject to withdrawal is consumed by a “reasonable probability” and the risk of “serious adverse consequences for health or death” The FDA reported that the classification update date is January 22, 2025, says Today. The FDA issued a retlasification of the retired Salmon from Costco on January 22Credit: Fda | Courtesy Recall that the FDA reported in October that by risk of a pollution of Listeria monocytogenes, The company ACME Smoked Fish Corporation withdrew from the Costco stores, 111 Smoked salmon boxes Kirkland Signature, which were distributed in Florida. How to recognize the product? In a statement at the official FDA site, he reported that Salmon products They were distributed to the distribution center of Southeast of Costco, located in West Palm Beach, Florida, and the Costco Warehouse stores in Florida, between October 9 and October 13 of last year. For better product location by consumers, they detailed that the Salmon comes in a 12 -ounce double package presentation, identified with UPC code 0 96619 25697 6 and lot No. 8512801270. While the company indicated that “the smoked salmon Kirkland Signature is vacuum packaged in a plastic pack with black border, with a blue name that says” smoked salmon “and an illustration of a salmon fish in the front.” Know the risks by Listeria Listeria monocytogenes is a bacterium responsible for Listeriosis is an infection that can be deadly for people with the weakened immune systemin person older, pregnant children and women. Healthy people can also get sick and Present symptoms in a little time such as headache, abdominal, high fever, nausea, diarrhea and rigidity. The call is to avoid the consumption of the product, discard or discard it in case they have in their possession some packaging of this type of salmon subject to withdrawal. Continue reading: (Tagstotranslate) Administration

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