Showing 20 articles starting at article 381
< Previous 20 articles Next 20 articles >
Categories: Mathematics: General, Offbeat: Plants and Animals
Published A novel strategy for extracting white mycelial pulp from fruiting mushroom bodies
(via sciencedaily.com) Original source Mycelial fibers, the fibrous cells found in fruiting mushroom bodies, have gained momentum as a sustainable material for making faux-leather and packaging owing to their excellent formability. Recently, a team of researchers has found a simple way of obtaining mycelial fibers, called 'mycelial pulp,' from fruiting mushroom bodies and bleaching them using sunlight while keeping their mycelial structures intact.
Published Fastest swimming insect could inspire uncrewed boat designs
(via sciencedaily.com) Original source Whirligig beetles, the world's fastest-swimming insect, achieve surprising speeds by employing a strategy shared by fast-swimming marine mammals and waterfowl, according to a new study that rewrites previous explanations of the physics involved.
Published Captive-bred birds able to improve their flight and migration performance
(via sciencedaily.com) Original source Two types of experiences affect the behavioral skills of animals: the animal's environment during its early development and acquired experience. Researchers followed Egyptian vultures during migration, a critical and challenging period for them, and investigated how their flying skills developed by examining their performance using high resolution tracking.
Published Advancing the generation of in-vivo chimeric lungs in mice using rat-derived stem cells
(via sciencedaily.com) Original source Creating a functional lung using interspecies chimeric animals is an attractive albeit challenging option for lung transplantation, requiring more research on the viable conditions needed for organ generation. A new study uses reverse-blastocyst complementation and tetraploid-based organ complementation methods to first determine these conditions in lung-deficient mice and then to generate rat-derived lungs in these mice. It provides useful insights on the intrinsic species-specific barriers and factors associated with lung development in interspecies chimeric animals.
Published Engineers invent octopus-inspired technology that can deceive and signal
(via sciencedaily.com) Original source With a split-second muscle contraction, the greater blue-ringed octopus can change the size and color of the namesake patterns on its skin for purposes of deception, camouflage and signaling. Researchers have drawn inspiration from this natural wonder to develop a technological platform with similar capabilities for use in a variety of fields, including the military, medicine, robotics and sustainable energy.
Published The snail or the egg?
(via sciencedaily.com) Original source Animals reproduce in one of two distinct ways: egg-laying or live birth. By studying an evolutionarily recent transition from egg-laying to live-bearing in a marine snail, collaborative research has shed new light on the genetic changes that allow organisms to make the switch.
Published 'Giant' predator worms more than half a billion years old discovered in North Greenland
(via sciencedaily.com) Original source Fossils of a new group of animal predators have been located in the Early Cambrian Sirius Passet fossil locality in North Greenland. These large worms may be some of the earliest carnivorous animals to have colonized the water column more than 518 million years ago, revealing a past dynasty of predators that scientists didn't know existed.
Published Chicken whisperers: Humans crack the clucking code
(via sciencedaily.com) Original source A new study has found humans can tell if chickens are excited or displeased, just by the sound of their clucks.
Published 'Juvenile T. rex' fossils are a distinct species of small tyrannosaur
(via sciencedaily.com) Original source A new analysis of fossils believed to be juveniles of T. rex now shows they were adults of a small tyrannosaur, with narrower jaws, longer legs, and bigger arms than T. rex. The species, Nanotyrannus lancensis, was first named decades ago but later reinterpreted as a young T. rex. The new study shows Nanotyrannus was a smaller, longer-armed relative of T. rex, with a narrower snout.
Published Ants recognize infected wounds and treat them with antibiotics
(via sciencedaily.com) Original source The African Matabele ants are often injured in fights with termites. Their conspecifics recognize when the wounds become infected and initiate antibiotic treatment.
Published Electronic 'soil' enhances crop growth
(via sciencedaily.com) Original source Barley seedlings grow on average 50% more when their root system is stimulated electrically through a new cultivation substrate. Researchers have now developed an electrically conductive 'soil' for soil-less cultivation, known as hydroponics.
Published Reindeer sleep while chewing their cud
(via sciencedaily.com) Original source Researchers report that the more time reindeer spend ruminating, the less time they spend in non-rapid eye movement (non-REM) sleep. EEG recordings revealed that reindeer's brainwaves during rumination resemble the brain waves present during non-REM sleep, and these brainwave patterns suggest that the reindeer are more 'rested' after ruminating. The researchers speculate that this multitasking might help reindeer get enough sleep during the summer months, when food is abundant and reindeer feed almost 24/7 in preparation for the long and food-sparse arctic winter.
Published World's smallest 'fanged' frogs found in Indonesia
(via sciencedaily.com) Original source Researchers have identified a species of frog new to science. The Indonesian amphibian is the size of a quarter, unlike its two-pound cousins, and has tiny fangs. Nearly uniquely among amphibians, they lay their eggs on the leaves of trees, and the males guard and tend to the nests.
Published Coevolution helps Santa's reindeer feast after flight
(via sciencedaily.com) Original source A new study suggests that it's not Rudolph's red nose that helps reindeer find food during snowy Arctic winters, but instead a unique adaptation of their eyes to their favorite food. Reindeer may have developed their unique ability to see in the ultraviolet spectrum so they can more easily spot their primary food, the algae-fungus fusion known as lichens -- which absorb UV -- in the winter landscape. The findings help explain the long-standing scientific mystery as to why reindeer -- including Rudolph and his fellow airborne ungulates from the classic story -- can see in UV.
Published Can you change a chicken into a frog, a fish or a chameleon?
(via sciencedaily.com) Original source Researchers have developed a theoretical framework that can reproduce and predict the patterns associated with gastrulation in a chicken embryo.
Published Seals stay warm and hydrated in the Arctic with larger, more convoluted nasal passages
(via sciencedaily.com) Original source Arctic seals have evolved many adaptations to cope with their frosty environment -- one that you might not immediately think of is the bones in their nasal cavity. Arctic seals have more convoluted nasal passages than seal species that live in milder environments, and researchers report that these structures help the seals more efficiently retain heat and moisture as they breathe in and out.
Published Enzymes can't tell artificial DNA from the real thing
(via sciencedaily.com) Original source Researchers have come one step closer to unlocking the potential of synthetic DNA, which could help scientists develop never-before-seen proteins in the lab.
Published Earliest evidence for domestic yak found using both archaeology, ancient DNA
(via sciencedaily.com) Original source The high-altitude hero of the Himalayas, yak are among the few large animals that can survive the extremely cold, harsh and oxygen-poor conditions of the Tibetan Plateau. In the mountainous regions of Asia, yak and yak-cattle hybrids serve as vital sources of meat, milk, transportation and fuel. However, little is known about their history: when or where yak were domesticated. In a new study, researchers report archaeologically and genetically confirmed evidence for domestic yak, dating back 2,500 years, by far the oldest record.
Published Whale-SETI: Groundbreaking encounter with humpback whales reveals potential for nonhuman intelligence communication
(via sciencedaily.com) Original source A team of scientists had a close encounter with a non-human (aquatic) intelligence. The Whale-SETI team has been studying humpback whale communication systems in an effort to develop intelligence filters for the search for extraterrestrial intelligence. In response to a recorded humpback 'contact' call played into the sea via an underwater speaker, a humpback whale named Twain approached and circled the team's boat, while responding in a conversational style to the whale 'greeting signal.' During the 20-minute exchange, Twain responded to each playback call and matched the interval variations between each signal.
Published This Japanese 'dragon' terrorized ancient seas
(via sciencedaily.com) Original source Researchers have described a Japanese mosasaur the size of a great white shark that terrorized Pacific seas 72 million years ago. The mosasaur was named for the place where it was found, Wakayama Prefecture. Researchers call it the Wakayama Soryu, which means blue dragon.