Some bones found in Mexico have revealed a new facet of the Mayans: traders of “exotic” dogs

We knew that the Mayans wove important commercial networks and? they used to market with food or items as precious as jade, obsidian, cocoa either shells. What we did not know is that in their markets there was another good as or even more precious that led sellers to invest resources, time and effort in transporting it over hundreds of kilometers: dogs. Just as we are willing to pay large sums for certain pedigree species, the Mayans of the Classic period (200-900 AD) they traded dogs that they fed with care. At least that’s what it suggests. a new study. Some lost bones. Moxviquil and Tenam Puente They are two Mayan sites located in Chiapas where, some time ago, archaeologists found remains of bones. So far nothing surprising. The curious thing is that among the remains there were fragments that belonged to dogs and deer, a valuable material that has allowed Dr. Elizateb Paris, from the University of Calgary, to compare their chemical characteristics to find out where the animals came from. The conclusions has published them in Journal of Achaeological Science and they leave a few surprises. An isotopic map. What Paris basically did, with the help of the rest of the colleagues who signed he paperwas to analyze the remains of strontium preserved in bones and tooth enamel. The reason is very simple: for researchers it represents a key clue to understanding what humans (or animals, in this case) ate and drank when they were alive, which in turn reveals the places they passed through. Once this information was collected, Dr. Paris and her colleagues compared it with a isotopic map which shows the proportions of strontium in all of Mesoamerica. What did they discover? That while the deer bones showed strontium levels consistent with the area in which they were located, suggesting that they were probably wild animals hunted in the local forests; The skeletons of the dogs told a very different story. “We discovered that the dogs in our sample were not from the area, but came from Mayan kingdoms in very distant lowlands,” share the anthropologist. The second surprise. It wasn’t the only thing Paris found out. The bones located in Moxviquil and Tenam Puente held yet another surprise. By thoroughly analyzing the carbon and nitrogen isotopes of the bones, the researchers discovered that the dogs enjoyed a privileged diet. So much, in fact, that they largely ate the same foods as humans: corn and meat. The archaeologists admit that the dogs may have been searching through the remains of what their owners consumed, but they also believe that this protein-rich diet was the result of “deliberate feeding.” In summary: it is not only that the dogs identified in the Mayan sites had traveled long distances, their diet was also taken care of. The question is… Why so much effort? The answer: trade. For Paris and his colleagues, the explanation is clear. The remains of Moxviquil and Tenam Puente reveal that Classic Period Mayan societies “traded” live dogs. And they were even willing to move them hundreds of kilometers, such as those between the central regions of Chiapas and the north of the Yucatan Peninsula. This not only shows that pre-Columbian peoples had customs not so different from those we maintain in 2026. It also confirms that they created “solid” marketing networks in Mesoamerica. The great unknown. The study de Paris helps us better understand Mayan society (and trade), but it leaves up a fascinating question: Was there any race that was especially valued? To which did the bones located in Chiapas belong? From the University of Calgary they recognize that this is still a mystery that they have not been able to completely clear up. At least for now. Researchers are already working with DNA samples to clarify it, although they have a hypothesis. The anthropologist remembers that the Aztecs had several special races and among them was the Xolotizcuintli (xolo), a dog that can be found in various sizes, but is always characterized by the lack of hair and premolars. “This breed could be present in the Mayan site, since the selective breeding of these dogs causes mutations that give rise to a strange shape in the teeth, a characteristic that many dogs in Chiapas have,” reveals university before remembering that there are indications that dogs were “highly appreciated” creatures among the Mayans. And not only because of what we now know about the distances they traveled or their diet. They are preserved representations in which rulers appear in hammocks with small dogs. Images | Secretariat of Culture of Mexico City (Flickr) 1 and 2 and Alex Azabache (Unsplash) In Xataka | We had always thought that the Mayans disappeared due to an environmental “apocalypse.” Turns out we were wrong

more than 1,200 exotic species are here to stay

The Iberian Peninsula is being invaded and not by a war between humans, but for 1,200 non-native species that have settled on our land. A phenomenon that represents a great threat to native fauna and flora and that now requires international cooperation to protect ecosystems and especially the animals and plants that are native to our peninsula. The study. According to a study published in Diversity and Distributions, the number of exotic species established on the peninsula now exceeds 1,200, including plants, insects, mollusks, crustaceans and vertebrates introduced intentionally or by accident. The protagonists in this case are Spain, Portugal and Andorra, which are the first affected by this silent invasion. The team, led by Ismael Soto and with participation, has documented 1,273 species that currently maintain themselves independently by feeding and reproducing. The data. In the results of the research it has been seen that at first it has been seen that the species that are invading us come mainly from the Palearctic region (Europe, temperate Asia and northern Africa) followed by the American species. But not everything is animals, as you might think, but 75% of the invaders correspond to vascular plants and insects. Although the big question here is: how did they get in here? The answer lies in the gardens and nurseries that, together with mechanisms linked to international transportation, participate with ornamental plant trade that are not original to the peninsula. Where. This is not something that is similar throughout the geography of the peninsula. Mainly, exotic species are concentrated in coastal areas and large cities, and that is why we see a large number of these in Andalusia, Catalonia or the Valencian Community. Something that is also related to the number of ports that exist as they are a great gateway for international trade in these invasive species. What damage do they cause? When the species arrive on the peninsula, they have a detrimental effect on our ecosystem, and that is why they generate so much alarm around them. Among the effects we find are: Ecosystem modification which can cause the local extermination of native species. Transmission of diseases to natural habitats that change their structure. Alteration of food webs and displacement of native species due to direct competition. For example, we can find a predatory species that ends up with a native species as its ideal prey. Examples. There are some species that are undoubtedly perfect examples of this. One of them is the american red crab (Procambarus clarkii) that was introduced into our habitat in 1973 and that today is responsible for great ecological damage, since it has caused the disappearance of native aquatic species, which also triggers socioeconomic problems. Another case is the bullhead (Silurus glanis), whose voracity and expansion as a fishing trophy have made it the dominant predator in several rivers and reservoirs, threatening the survival of other aquatic species.​ The ants. Although they seem to be going their own way, the reality is that exotic ants like Argentina (Linepithema humile) It has expanded through cities and coasts, causing large effects on ecosystems and generating high control costs. Floors. Most of the invasive species we have in this case are not animals, but plants. One of the classic examples is the fern Azolla filiculoides what is capable of consuming all the oxygen in the water and suffocate the native aquatic species that will use this oxygen. Another example is the water hyacinth which It is among the 100 most invasive species in the world for its impact on lagoons and aquatic ecosystems. What can be done? The prevention and control of exotic species requires continuous monitoring, restoration of degraded habitats and effective policies based on science and citizen participation. Sectors such as aquaculture, recreational fishing, the pet trade and horticulture are critical points where preventive measures can make a difference. The authors insist on the urgency of strengthening international collaboration and applying shared strategies between the scientific community, environmental managers and civil society. Only in this way will it be possible to face one of the greatest threats to Iberian biodiversity, protect endemic species and maintain ecological balance in this hot spot of European biodiversity. Images | Joshua Ralph Ivan Bandura In Xataka | England is experiencing an unprecedented invasion. The problem is that they are octopuses, and they are devouring everything they can find.​

Exotic fruit that helps reduce blood cholesterol levels

Unknown by the vast majority, the Black Aroniaalso called Chokeberryit is today one of the fruits with the greatest amount of benefits on the human body. According to a study conducted by the researcher Yulin Renof the Ohio State Universitytogether with the National Library of Medicine from the United Statesthis small fruit of appearance is capable of achieving a direct impact on the decrease in the level of Blood cholesterol and level sugar in it. But how can a tiny size berry achieve this series of important results only with its consumption? The benefits of Black Aronia in health As revealed in the investigation, this food, from the region of North Americahas a series of important nutrients and benefits as: Low calories Fiber Vitamin c Vitamin K Manganese Iron Vitamin a Vitamin e To measure the impact of this fruit In the health of a person, the team of researchers had a group of people who took the Black Aronia For 6 weeks in a row. After the completion of the clinical trial, the scientists noticed that the pressure systolic bloodas well as the Blood cholesterol levels The participants were significantly reduced. Similarly, and in addition to its benefits to counteract this type of heart diseaseit was also discovered that the consumption of the Black Aronia helped Reduce the glycemia level In the blood. In addition to all of the above, and thanks to the series of studies carried out, it was also discovered that the Black Aronia Provides important amounts of folic acidin addition to being extremely useful when Improve the digestive process Due to his power anti -inflammatory. Niacin has been shown to reduce LDL cholesterol, its impact on the reduction of cardiovascular risk has been lower than expected.Credit: Redpixel.Pl | Shuttersock In the same way, it is able to nurture the muscles and support the arthritis prevention. The Black Aronia It also has other benefits such as: Antiproliferative: It has properties that help reduce the growth of cancer cells. ANTIMUTAGENICA: It houses various nutrients that can contribute to the care of the immune system. Regarding the form of consumption, it is recommended to eat the fruit in its natural form. Similarly, it can be enjoyed by freshly made milkshakes or juices. However, and like every new food, it is important to consult an expert in nutrition to make the best decision regarding its inclusion in a diet. Continue reading: The key fruit that can improve digestion, according to Harvard experts Saúco’s juice could be a “powerful tool” to control weight What fruits can you eat if you are diabetic and which is the best, according to experts (tagstotranslate) High cholesterol

Log In

Forgot password?

Forgot password?

Enter your account data and we will send you a link to reset your password.

Your password reset link appears to be invalid or expired.

Log in

Privacy Policy

Add to Collection

No Collections

Here you'll find all collections you've created before.