Tag: "hovering" at biology news

Hummingbirds lose power at high altitudes

...lifornia Institute of Technology. "The costs of hovering flight are the same across elevations because humm...in an amazing suite of maneuvers, above and beyond hovering at flowers for nectar or insects," he said. "They are constantly using much more mechanical power to...

Hummingbird flight an evolutionary marvel

...hich has never before been applied to the study of hovering birds. This system atomizes olive oil into microsc...e of the aerodynamic tricks of an insect to gain a hovering ability," Warrick said. "They make use of what is, in other birds, an aerodynamically wasted upstrok...

Ultra-fast camera captures how hummingbirds hover

...e were surprised to find that the up stroke in the hovering hummingbird was much less active than the down str...ght into evolutionary trends that led to sustained hovering in birds." This allocation of wing workload differs from that of other birds, which use the down str...

Declining snowpack cools off CO2 emissions from winter soils, says U. of Colorado study

...ans of only hours to days thriving at temperatures hovering around zero, Monson said. They used DNA fingerprinting techniques to show the winter microbe community was very different genetically from the summer microbe community. Recent studies have shown that some mountain ranges in Europe and the Western U...

NYU'S Childress demonstrates tool for studying hovering flight at international science meeting

A tool for examining hovering flight of insects and birds could allow researcher... the blade ceased to rotate. To simulate the hovering flight of a flapping body, the researchers created a vertical "oscillating wind tunnel," by using a ...

New research reveals unexpected post-mating gene expression in model lab insect

That cloud of tiny flies hovering around spoiled fruit isn't just a nuisance. In fact, what science calls Drosophila melanogaster is more and more the key to intricate genetic studies that shed light on numerous biological processes, especially reproduction. Now, evolutionary and ...

UC Davis scientists' groundbreaking research: Mate-attracting chemicals

...mmon fruit fly, Drosophila melanogaster, known for hovering around rotting fruit, is considered a model organism or "golden bug," a prized tool for genetic research and developmental studies. The UC Davis team obtained fruit fly mutants with an empty neuron (or neuron without a receptor) from Yale Universit...

Unpeaceful co-existence: How strengths and weaknesses maintain biodiversity in an ant community

...y decapitation. When the target ants see the flies hovering around, they run away and are unable to effectively defend resources. Using mathematical models, the team showed that this combination of factors is indeed sufficient to explain how five of the six most common species manage to survive, with the sixt...

Bats prey on nocturnally migrating songbirds

...es could simply, and accidentally, ingest feathers hovering in the air, which are particularly numerous during migration events. According to the detractors of a bird-based diet, eating feathers could thus be a classical consequence of a bats' echolocation system which hampers fine-grained discrimination of t...

Invisible gases form most organic haze in urban, rural areas

...do at Boulder shows that invisible, reactive gases hovering over Earth's surface, not direct emissions of particulates, form the bulk of organic haze in both urban and rural areas around the world. Many science and health professionals have believed sources that spew soot and other tiny particles directly ...

Coelacanth fossil sheds light on fin-to-limb evolution

... distinctive blue fish swim with their heads down, hovering just above the sea floor using an organ in their nose to detect living things in the mud. It was astonishing luck that we found it, Friedman said, adding that the fossil had fallen off a cliff a couple of hundred feet high and landed in a differen...

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(Date:10/14/2014)... 14, 2014 – High doses of fish oil supplements, rich ... common type of irregular heartbeat in which the heart can ... of the AFFORD trial led by the Montreal Heart Institute ... of Cardiology on October 7th. , For the trial, ... were randomly assigned to 4 grams of fish oil a ...
(Date:10/14/2014)... international team of researchers, led by the Chinese Academy ... Nature Genetics a brief genomic history of ... the tomato plant. , The C.M. Rick Tomato Genetics ... in this study by providing seed of both cultivated ... which builds on the first tomato genome sequence completed ...
(Date:10/14/2014)... 2014 – Researchers from Stanford University School of Medicine ... by cells and the activation of muscle stem cells. ... generate energy during times of nutrient deprivation. The scientists ... this protective mechanism is operational it also seems to ... reveals that when stem cells emerge from a quiescent ...
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