Echolocation Current Events

Echolocation Current Events, Echolocation News Articles.
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What did the katydids do when picking up bat sounds?
Ecosystems can be incredibly complex, with many interacting species. In many habitats, predators shape they behavior of prey and prey shape the behavior of predators. This paper provides a detailed look at the predator-prey relationship between bats and katydids, a group of insects related to crickets and grasshoppers. (2020-08-28)

Keeping an ear out for kin
Bats can distinguish between the calls of their own and different species with their echolocation calls, report scientists of the Max Planck Institute for Ornithology in Seewiesen. (2010-05-19)

Stealth maneuver allows nectar bats to target insect prey
A nectar-feeding bat that was thought to eat insects in passing has been discovered to target its moving prey with stealth precision, according to new research by scientists at Queen Mary University of London. (2013-12-12)

How bats took over the night
Blessed with the power of echolocation -- reflected sound -- bats rule the night skies. And while it seems that echolocation works together with normal vision to give bats an evolutionary edge, nobody knows exactly how. Now Tel Aviv University research suggests that bats use vision to keep track of where they're going and echolocation to hunt tiny insects that most nocturnal predators can't see. The findings add to our scientific understanding of sensory evolution. (2013-12-12)

Bats' echolocation recorded for human exploit
A team of British researchers has worked with six adult Egyptian fruit bats from Tropical World in Leeds to record and recreate their calls. (2010-05-11)

Echolocation acts as substitute sense for blind people
Human echolocation operates as a viable 'sense,' working in tandem with other senses to deliver information to people with visual impairment, according to new research published in Psychological Science, a journal of the Association for Psychological Science. Ironically, the proof for the vision-like qualities of echolocation came from blind echolocators wrongly judging how heavy objects of different sizes felt. (2014-12-23)

Bats go quiet during fall mating season
Giving someone the 'silent treatment' during courtship might not be the best strategy for romance. But, new research shows hoary bats fly with little or no echolocation at all as a possible mating-related behavior. (2018-05-02)

'I can hear a building over there' -- researchers study blind people's ability to echolocate
Everybody has heard about echolocation in bats and dolphins. These creatures emit bursts of sounds and listen to the echoes that bounce back to detect objects in their environment. What is less well known is that people can echolocate, too. (2011-05-25)

Tiny insects become 'visible' to bats when they swarm
Small insects that would normally be undetectable to bats using echolocation suddenly become detectable when they occur in large swarms. Arjan Boonman of Tel-Aviv University and colleagues present these findings in PLOS Computational Biology. (2019-12-12)

'Non-echolocating' fruit bats actually do echolocate, with wing clicks
In a discovery that overturns conventional wisdom about bats, researchers reporting in Current Biology have found that Old World fruit bats -- long classified as 'non-echolocating' -- actually do use a rudimentary form of echolocation. Perhaps most surprisingly, the clicks they emit to produce the echoes that guide them through the darkness aren't vocalizations at all. They are instead produced by the bats' wings, although scientists don't yet know exactly how the bats do it. (2014-12-04)

Mouth clicks used in human echolocation captured in unprecedented detail
Like some bats and marine mammals, people can develop expert echolocation skills, in which they produce a clicking sound with their mouths and listen to the reflected sound waves to 'see' their surroundings. A new study published in PLOS Computational Biology provides the first in-depth analysis of the mouth clicks used in human echolocation. (2017-08-31)

A new social role for echolocation in bats that hunt together
To find prey in the dark, bats use echolocation. Some species, like Molossus molossus, may also search within hearing distance of their echolocating group members, sharing information about where food patches are located. Social information encoded in their echolocation calls may facilitate this foraging strategy that allows them to find food faster. (2020-06-19)

Dolphin and bat DNA on the same wavelength
Scientists at Queen Mary, University of London have shown that the remarkable ability of echolocation is shared by bats and dolphins at a much deeper level than anyone previously realized -- all the way down to the molecular level. (2010-01-25)

Dolphins use double sonar
Dolphins and porpoises use echolocation for hunting and orientation. By sending out high-frequency sound, known as ultrasound, dolphins can use the echoes to determine what type of object the sound beam has hit. Researchers from Sweden and the US have now discovered that dolphins can generate two sound beam projections simultaneously. (2011-06-07)

Echolocation: Sizing up spaces by ear
Humans can be trained to use echolocation to estimate the sizes of enclosed spaces. Ludwig-Maximilians-Universitaet (LMU) in Munich researchers now show that the learning process involves close coordination between sensory and motor cortex. (2017-01-26)

For bats and dolphins, hearing gene prestin adapted for echolocation
In a new study published in the advanced online edition of Molecular Biology and Evolution, Peng Shi, et al., have shown that prestin has also independently evolved to play a critical role in the ultrasonic hearing range of animal sonar, or echolocation, to help dolphins navigate through murky waters or bats find food in the dark. (2014-08-01)

Fruit bats can transform echoes into images
A new Tel Aviv University study finds that fruit bats actually integrate vision and echolocation to flourish in the dead of night. (2019-06-26)

Dolphin ancestor's hearing was more like hoofed mammals than today's sea creatures
The CT scan revealed cochlear coiling with more turns than in animals with echolocation, indicating hearing more similar to the cloven-hoofed, terrestrial mammals dolphins came from than the sleek sea creatures they are today. (2019-05-14)

'I can hear a building over there'
Researchers at the University of Western Ontario's Centre for Brain and Mind have recently shown that blind echolocation experts use what is normally the (2011-05-25)

Queen Mary scientists uncover genetic similarities between bats and dolphins
The evolution of similar traits in different species, a process known as convergent evolution, is widespread not only at the physical level, but also at the genetic level, according to new research led by scientists at Queen Mary University of London and published in Nature this week. (2013-09-04)

Blind as a bat? The genetic basis of echolocation in bats and whales
Scientists reveal that similar genetic mutations led to the establishment of echolocation in both bats and whales. (2020-01-29)

When calling loudly, echolocation is costly for small bats
Calling in the ultrasonic range enables small bats to orient themselves in the dark and track down insects. Louder calls travel farther, improving a bat's ability to detect their prey. It was long assumed that echolocation does not contribute much to energy expenditure in flight because individuals couple their calls with the beat of their wings. Scientists at the Leibniz-IZW in Berlin have now shown that high intensity echolocation calls substantially contribute to energy expenditure. (2020-07-13)

Echo hunter: Researchers name new fossil whale with high frequency hearing
A newly named fossil whale species had superior high-frequency hearing ability, helped in part by the unique shape of inner ear features that have given scientists new clues about the evolution of this specialized sense. Researchers say high-frequency hearing likely predated echolocation development. (2016-08-04)

Echolocation
Biologists at Ludwig-Maximilians-Universitaet in Munich have demonstrated that people can acquire the capacity for echolocation, although it does take time and work. (2013-08-29)

Dolphins can remain alert for up to 15 days at a time with no sign of fatigue
Dolphins sleep with only one half of their brains at a time, and according to new research published Oct. 17 in the open access journal PLOS ONE, this trait allows them to stay constantly alert for at least 15 days in a row. (2012-10-17)

Hungry bats compete for prey by jamming sonar
A study published today in Science shows that Mexican free-tailed bats jam the sonar of competitors to gain advantage in aerial foraging contests. (2014-11-06)

Echolocation: Making the best of sparse information
New findings reported by Ludwig-Maximilians-Universitaet (LMU) in Munich researchers challenge a generally accepted model of echolocation in bats. They demonstrate that bats require far less spatial information than previously thought to navigate effectively. (2019-05-20)

False killer whales use acoustic squint to target prey
Toothed whales and dolphins are remarkable accurate hunters, considering that they locate prey using echolocation alone, so how do they pull this off? Laura Kloepper and colleagues from the University of Hawaii, USA, tested the echolocation skills of a false killer whale called Kina and discovered that she focuses her echolocation beam on targets, effectively (2012-03-22)

Resonant mechanism discovery could inspire ultra-thin acoustic absorbers
New research led by academics at the University of Bristol has discovered that the scales on moth wings vibrate and can absorb the sound frequencies used by bats for echolocation (biological sonar). The finding could help researchers develop bioinspired thin and lightweight resonant sound absorbers. (2018-11-12)

Blind as bats: Echolocation study reveals key evolutionary trade-offs with other senses
A research team has performed a new comparative study of two sophisticated echolocating bats. Their results confirm evolutionary trade-offs at work -- showing an extensive contraction of smell (olfactory) receptor gene repertoires and loss of a dozen vision-related genes in the echolocating bats. (2016-11-01)

Spanish scientists develop echo-location in humans
A team of researchers from the University of Alcala de Henares has shown scientifically that human beings can develop echolocation, the system of acoustic signals used by dolphins and bats to explore their surroundings. Producing certain kinds of tongue clicks helps people to identify objects around them without needing to see them, something which would be especially useful for the blind. (2009-06-30)

Smooth, manmade surfaces create a 'blind spot' for bats using echolocation
Bats are well known for their sophisticated use of echolocation to navigate through areas riddled with obstacles, but now a new study reveals that this useful ability is hindered in the face of smooth vertical surfaces -- those that are particularly likely to be manmade. (2017-09-07)

Bird with super senses inspires researchers
Not much surprises the oilbird. Its senses are super sharp and when combined, may function in a way that can inspire researchers to construct better drones and more advanced technology. (2017-08-01)

Bats and whales behave in surprisingly similar ways
Sperm whales weigh up to 50 tons, and the smallest bat barely reaches a gram. Nevertheless, the two species share the same success story: They both have developed the ability to use echolocation -- a biological sonar -- for hunting. Now Danish researchers show that the biosonar of toothed whales and bats share surprisingly many similarities -- even though they live in very different environments and vary extremely in size. (2013-10-29)

Bats use private and social information as they hunt
As some of the most savvy and sophisticated predators out there, bats eavesdrop on their prey and even on other bats to collect a wide variety of information as they hunt. (2019-09-24)

How the brain controls the voice
A particular neuronal circuit in the brains of bats controls their vocalisations. This was recently discovered by biologists at Goethe University Frankfurt. Based on the rhythm with which the circuit oscillated, the Frankfurt researchers were able to predict the kind of sounds the bats were about to make. These research results could contribute to a better understanding of human diseases in which language is impaired such as Parkinson's or Tourette syndrome. (2020-03-20)

Roaring bats
New scientific results show bats emitting more dB than a rock concert. Annemarie Surlykke from the Institute of Biology, SDU, Denmark, and her colleague, Elisabeth Kalko, from the University of Ulm, Germany, studied the echolocation behavior in 11 species of insect-eating tropical bats from Panamá, the findings of which are reported in this week's PLoS ONE. (2008-04-29)

How a flying bat sees space
By training bats to fly around obstacles in a room, and sit patiently on a platform, a National Science Foundation (NSF)-funded research team were able to interpret how the animals use echolocation -- a high-frequency sound navigation system that bats use to hunt -- to sense their environment. The results were presented today at the annual meeting of the Society for Neuroscience. (2015-10-22)

Whispering bats are 100 times louder than previously thought
Some echo-locating bats seem to be really quiet, appearing to make echo-locating calls that are no louder than 70 decibel. But no one had successfully recorded their volume under natural conditions, so Annemarie Surlyyke and Signe Brinklov from University of Southern Denmark teamed up with Elizabeth Kalko from the Smithsonian Tropical Research Institute to record whispering bats and found that some of them are shrieking 100 times louder than thought. (2008-12-12)

Bat researchers no longer flying blind on echolocation
Researchers at the University of Western Ontario (Western) led an international and multidisciplinary study using micro-computed tomography systems to shed new light on the way bats echolocate. With echolocation, animals emit sounds and then listen to the reflected echoes of those sounds to form images of their surroundings in their brains. The study is published in the journal Nature. (2010-01-24)

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