Tag Archives: tongue

Orca Captured Engaging in a “Tongue Kiss” in the Wild for the First Time

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In a remarkable encounter with citizen scientists off the coast of Norway, a duo of orcas was seen engaging in “kissing” behavior in the wild for the very first time.

The footage captured by the group displays the pair gently nodding at each other, accompanied by “tongue nibbling.”

While similar behaviors have been documented before, this marks the first instance of such interactions being observed in a natural habitat.

During the video, the orcas came within 10-15 meters (30-50 feet) of each other, sharing three brief moments of affection above the water’s surface for a duration of two minutes.

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The footage captures a serene moment of connection between the two whales.

“This behavior has only been documented in orcas under human supervision,” said Dr. Javier Almunia from Loro Parque in Spain, as reported by BBC Science Focus. He was part of a recently published study utilizing observation videos from marine environments.

“Witnessing it in the wild indicates that such intricate social behaviors extend beyond captivity and are likely integral to the species’ natural social behavior.”

Orcas are known for their strong social structures, employing intricate behavioral systems to form and maintain social relationships.

For marine biologists, these observations are crucial for understanding orca interactions.

“Gaining insight into the social behavior of wildlife is essential for understanding their communication, bonding, and cooperation—key elements for their survival and well-being,” noted Almunia.

Unfortunately, these wild behaviors are rarely seen and require a fair amount of luck to witness at the right moment.

While studying animals in captivity is safer and more accessible, their behaviors often differ significantly from those observed in the wild.

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Orcas in captivity have previously been observed “nibbling” their tongues at each other.

A Remarkable Encounter

The video was filmed on January 11, 2024, when two whales were observed by a fortunate group of snorkelers diving in Kavanangenfjord, northern Norway.

This area is known as a gathering spot for marine mammals, making it an ideal location for observing orcas due to its clear waters.

The group had the opportunity to watch the orcas under the guidance of experienced expedition leaders.

However, the study emphasized that while tourist excursions can lead to valuable scientific observations, “it is widely recognized that activities like whale watching and swimming can pose significant risks to wild populations.”

Orcas, often referred to by the misleading nickname “Killer Whale,” actually belong to the dolphin family. The latter portion of this nickname is accurate, as all dolphins are categorized as “toothed whales.”

Nevertheless, the term “killer” is misleading, as there are no documented cases of wild orcas intentionally harming humans.

The name stems from an ancient mariner who observed orcas hunting other large whales.

“They were originally called ‘whale killers,’ a term that evolved into ‘killer whale’,” explained Almunia.

“While orcas are indeed apex predators, they are also incredibly intelligent and social animals with complex cultures and strong familial bonds. They play a critical role as top predators within marine ecosystems.”

About Our Experts

Dr. Javier Almunia serves as the director of Loro Parque Fanfacion, a Spanish organization dedicated to the conservation of endangered parrot and marine species. He specializes in cetacean biology and has participated in numerous initiatives aimed at preserving biodiversity and protecting endangered species.

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Source: www.sciencefocus.com

Experience Tasting Cakes in Virtual Reality with an Electronic Tongue

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Taste hydrogels are administered to the mouth via small tubes

Shryn Chen

Electronic tongues that can replicate flavors like cake and fish soup can help you replicate food in virtual reality, but still can’t simulate anything else that affects taste, such as smell.

Yizhen Jia Ohio State University and his colleagues developed a system called e-Taste. This can solve a way to sample food and partially reproduce its flavor in someone’s mouth.

This includes using chemicals that correspond to five basic flavors. Sodium chloride, salty water, sour citric acid, glucose for sweetness, magnesium chloride for bitterness, umami glutamic acid. “These five flavors already explain the very large spectrum of food we have every day,” says Jia.

The system uses sensors to detect the levels of these chemicals in the food, convert them into digital measurements, pumping these values ​​into a pump, and pushing a small amount of hydrogel containing different flavors into a small tube under a person’s tongue.

First, the researchers tested a system with a single flavor and asked how well the device reproduced sour on a 5-point scale, comparing it to a real sample of sour taste. They gave the same number for 70% of the time for the true sour thing that was reproduced.

The team then tested whether the system was able to replicate more complex flavors such as lemonade, cake, fried eggs, fish soup, coffee, etc., and asked a group of six if they could distinguish them, and felt they could have over 80% of the time.

However, I say it’s not very useful to focus on such flavors alone. Alan Chalmers Because other sensations are also involved in our taste at Warwick University in the UK. “Next time you have strawberries, close your nose and eyes. Strawberries are very sour, but are perceived as sweet because of their aroma and red colour. So if you send them just sour on your device, you’ll never know that they’re actually from strawberries.”

“This kind of electron can extract the amount of sweetness [and] It’s sour, but it’s not a taste for a human tongue,” he says.

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Source: www.newscientist.com

Electronic tongue accurately identifies chemical makeup of alcoholic beverages

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Molecular tests can be used to assess the quality of drinks

Evgeny Parilov/Alamy

Beverage manufacturers and consumers may soon have access to small, portable kits not unlike coronavirus tests to check the quality and safety of alcoholic beverages.

The device is called an “artificial tongue” because it can detect additives, toxins, and sweetness in drinks with just a few drops.

Shuo Fan Researchers at China’s Nanjing University say this first-generation new technology cannot yet test for date rape drugs or detect methanol contamination in spiked drinks. A recent incident occurred in Laos in which six backpackers were killed.In future versions,

Current methods for analyzing alcoholic beverages, such as liquid chromatography, require expensive and cumbersome laboratory equipment and require specialized technicians to manipulate and analyze the samples.

The artificial tongue relies on biological nanopore technology. It uses modified organisms, such as bacteria, that have tiny holes, or pores, in their cell membranes that are just a few nanometers in diameter. By charging the membrane with an electrical charge, small molecules of the substance being tested can be drawn into the pores and passed through them.

When these molecules pass through the nanopore, they generate unique electrical signatures that can be analyzed to identify the chemicals present in the sample. Nanopores have already revolutionized DNA sequencing, allowing genetic material to be tested almost instantly using easily portable equipment.

Huang and colleagues used nanopores made in bacteria, called micropores, that have already been introduced for DNA sequencing. Smegmatis bacterium.

The device uses artificial intelligence to identify molecules that pass through the nanopores, such as fragrance compounds and additives, Huang said. “The sensor tells you right away what type of alcoholic beverage it is,” he says. “It can provide a quantitative standard of the product and also easily identify counterfeit alcoholic beverage products.”

Nanopore detectors require only a power source to operate, he says. “This nanopore sensing assay can be performed at home, in the office, or on the street as easily as a COVID-19 test,” Huang said. “You just add a drop of alcoholic beverage to the sensor and wait for the results. The machine learning algorithm does the rest of the work.”

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  • biotechnology /
  • Eating and drinking

Source: www.newscientist.com