A new analysis of years of vocalizations by sperm whales in the eastern Caribbean has provided a fuller understanding of how whales communicate using codas, reports Will Dunham of Reuters. Graduate student Pratyusha Sharma explained that: "The research shows that the expressivity of sperm whale calls is much larger than previously thought."
New Scientist reporter Clare Wilson writes that a new analysis by MIT researchers of thousands of exchanges made by east Caribbean sperm whales demonstrates a communication system more advanced than previously thought. “It’s really extraordinary to see the possibility of another species on this planet having the capacity for communication,” says Prof. Daniela Rus.
Researchers from MIT and elsewhere have uncovered a phonetic alphabet used by sperm whales, which provides “key breakthroughs in our understanding of cetacean communication,” reports Brain Heater for TechCrunch. “This phonetic alphabet makes it possible to systematically explain the observed variability in the coda structure,” says Prof. Daniela Rus, director of CSAIL. “We believe that it’s possible that this is the first instance outside of human language where a communication provides an example of the linguistic concept of duality of patterning. That refers to a set of individually meaningless elements that can be combined to form larger meaningful units, sort of like combining syllables into words.”
Associated Press reporter Maria Cheng spotlights a new study by MIT researchers that identifies a “phonetic alphabet” used by whales when communicating. “It doesn’t appear that they have a fixed set of codas,” says graduate student Pratyusha Sharma. “That gives the whales access to a much larger communication system.”
Using machine learning, MIT researchers have discovered that sperm whales use “a bigger lexicon of sound patterns” that indicates a far more complex communication style than previously thought, reports Lauren Sommers for NPR. “Our results show there is much more complexity than previously believed and this is challenging the current state of the art or state of beliefs about the animal world," says Prof. Daniela Rus, director of CSAIL.
MIT researchers have discovered that sperm whales use a “much richer set of sounds than previously known, which they call a ‘sperm whale phonetic alphabet,’” reports Carl Zimmer for The New York Times. “The researchers identified 156 different codas, each with distinct combinations of tempo, rhythm, rubato and ornamentation,” Zimmer explains. “This variation is strikingly similar to the way humans combine movements in our lips and tongue to produce a set of phonetic sounds.”
Researchers at MIT and elsewhere have investigated “how several species of parrots interacted when placed on brief video calls with one another,” reports Mack Degeurin for Popular Science. “The results were shocking,” explains Degeurin. “In almost all cases, the birds’ caretakers claim the video calls improved their well-being. Some of the birds even appeared to learn new skills, like foraging or improved flight, after observing other birds doing so.”
A study co-authored by research scientist Evan Fricke found that “extinctions and declines in habitat [of migratory birds] have dramatically reduced the long-distance dispersal of seeds,” reports Liam Drew for The Atlantic. “There have been really strong declines in long-distance seed dispersal as a result of the massive loss of big animals from the ecosystems,” says Fricke.
MIT scientists have developed a new brain “atlas” and computer model that sheds insight into the brain-body connections in C. elegans worms, reports Lauren Leffer for Scientific American. “Through establishing those brain-behavior links in a humble roundworm,” writes Leffer, “neuroscientists are one step closer to understanding how all sorts of animal brains, even potentially human ones, encode action.”
A study by researchers from the Broad Institute and others have found that cancer in humans and dogs share genomic similarities, reports Nicole Karlis for Salon. “Specifically, the study identified 18 genetic mutations that are likely a primary driver of the cancer in canine patients, eight of which overlapped with so-called "hotspots" in human cancers,” writes Karlis.
MIT scientists have found that the “motions of undulating animals and the states of quantum objects can be described using strikingly similar equations,” writes Karmela Padavic-Callaghan for New Scientist. The similarity “allowed the team to use mathematical tools previously developed by quantum physicists to analyze the animals,” notes Padavic-Callaghan. “For instance, the team quantified how differently a snake-like robot and a C. elegans move and created a diagram that placed them on a spectrum of other undulating creatures.”
A new study by MIT scientists uncovers how male sandgrouse are able to soak up large amounts of water in their feathers and carry it over long distances to their chicks, reports Forbes. The researchers found that “when wetted, the coiled portions of the sandgrouse feather barbules unwind and rotate so they end up perpendicular to the vane. This creates a dense forest of fibers that can hold water through capillary action.”
Researchers at MIT have co-authored a paper in which they used honeybees to study the microbiome of cities. Since bees “tend to forage within a mile radius of their hives in urban areas, there’s valuable information about a city or even a neighborhood in the honey they produce, on their bodies and in the debris that lies at the bottom of hives,” writes Linda Poon for Bloomberg.
Prof. Matthew Wilson speaks with National Geographic reporter Brian Handwerk about his research exploring the science behind whether animals have dreams. “We have this idea of dreams being a confabulatory narrative with kind of crazy, vivid elements to it,” says Wilson. “But when we look into animal models, we’re simply trying to understand what goes on during sleep that might influence learning, memory, and behavior.”
Scientists at MIT and the Woods Hole Oceanographic Institution (WHOI) have found that while albatross couples typically mate for life, shy wandering albatross males are more likely to be divorced, reports Forbes. “This link between personality and divorce could help scientists predict the resilience of an albatross population over time."