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Tag: "fly" at biology news

Gene that makes people 'early to bed and early to rise' demystified

... and be back to normal again," Fu said. "When we fly to Europe, we set our watch ahead several time zones and our watch is back on track," Ptácek added. "We don't understand the [internal] human clock well enough to advance or delay it that way. But with all that we've learned from the fruit fly, mouse...

Bioluminescence at the service of a novel cerebral imaging technique

...onitor the cerebral activity of a Drosophila fruit fly for 24 or even 48 hours. Because of these characteristics, the new tracer can demonstrate new physiological phenomena related to calcium activity. Thus the activation by nicotine of pedunculate bodies (an important structure for learning and olf...

A case of mistaken identity for the ivory-billed woodpecker?

...flight. He also found that as Pileated Woodpeckers fly away from the camera, their plumage is hard to distinguish from the Ivory-billed Woodpecker's. He suggests that the Pileated Woodpecker's distinctive black trailing wing edges can be spotted in the Luneau video as the wings stroke downwards. Previous...

Fruit fly gene research may shed light on human disease processes

...idual to a disease." "Studying the common fruit fly ?Drosophilia melanogaster -- lets us conduct more ...nd his graduate students have been researching how fly embryos become male or female, a process that occurs over a 30-minute period early in their developm...

NYU scientists identify how development of different species uses same genes with distinct features

...urnal Science. The researchers examined the fruit fly Drosophila and the wasp Nasonia as genetic model systems. Fruit flies?development is well-understood by biologists and therefore serves as an appropriate focus for genetic analyses. In this study, the researchers sought to explore the generality of d...

With fruit fly sex, researchers find mind-body connection

... and flirtatious flights that mark male and female fly courtship. Results are published in Nature Gene...n has been steeped in the science, using the fruit fly as a model to understand how genes build a nervous system that, in turn, controls complex behaviors....

Stem cells engage in dialogue with the cells that regulate their futures

... flies, as a model system. The production of fruit fly eggs depends on the presence of a renewable source...vary of the adult fruit fly. Inside the fruit fly ovary are structures called germarium which contain tiny cradles made of cap cells that nurture stem...

Evolution of Old World fruit flies on three continents mirrors climate change

...e triggering genetic changes in a species of fruit fly that is native to Europe and was introduced into N...nce. The research deals with an Old World fruit fly species called Drosophila subobscura, which originally ranged from the Mediterranean Sea to Scandina...

Compound eyes, evolutionary ties

...of a key protein in the compound eyes of the fruit fly (which glow at center due to a fluorescent protein) allows the formation of distinct light gathering units in each of its 800 unit eyes, an evolutionary change to an "open system" that enabled insects to make significant improvements in visual acuity...

Two nerve cells in direct contact

...nal flow fields such as that which arises when the fly turns around its body's vertical axis. Interesting..., this does not mean that the findings made by the fly researchers in Martinsried will be without consequence for other areas of science. For example, engi...

A valuable fly for research into disease

...thologies, heart disease. A tiny insect, the fruit fly (Drosophila melanogaster) is providing an excellen... cell and developmental biology. The role of the fly Studies using Drosophila date back to the last century and have provided valuable insight into the...

Researchers identify neurons that assign value during learning

...rs have been able to identify neurons in the fruit fly Drosophila that are responsible for assigning valu...ehavior. For example, if an animal such as a fruit fly learns to associate a particular odor with a punishing stimulus, the odor itself can become repulsiv...

Tracing the formation of long-term memory

... with a mild electric shock. This method gives the fly a training trial, then a rest and then another trial. The rest is critical in inducing long-term memory that can last days. In this study, the five spaced trials produced a memory that lasted for more than a day. They then used a technique called "fu...

Sea urchin genome suprisingly similar to man and may hold key to cures

...r more widely studied animal models, such as fruit fly or worms. The purple sea urchin, in fact, has 7,000 genes in common with humans, including genes associated with Parkinson’s, Alzheimer’s and Huntington’s diseases and muscular dystrophy. "Another surprise is that this spiny creature with no eyes,...

Using nature's most primitive anti-viral defense system to find new approaches to cancer research

The humble fruit fly and a grant from the AICR ?the Association for International Cancer Research - are helping a leading scientist in London identify potential targets for drugs that block the spread of cancer. In one of the first studies of its kind, Dr Buzz Baum of ...

Regulating the nuclear architecture of the cell

...tecture, maintaining genome stability in the fruit fly Drosophila melanogaster. Their results are publish...ow nuclear organization is controlled in the fruit fly can apply to human disorders like birth defects and cancer. The organization of structures in the ce...

First biomarker for human sleepiness identified in fruit flies

...y level after sleep deprivation in different fruit fly lines genetically altered to modify their sleep dr... In one key test, amylase did not increase in a fly modified to endure sleep deprivation longer than normal flies without incurring sleep debt. When sci...

Geneticists discover genes that make fruit fly hybrids sterile

...he researchers have found two genes from two fruit fly species ( Drosophila melanogaster and D. simulan..."turned off" and then crossed with the other fruit fly species, the males survive. "We have found the first example of two genes that interact to cause l...

Most important actors in the growth process of neurons identified

...uence of damaged or diseased neurons. The fruit fly as model Bassem Hassan is using the fruit fly (Drosophila melanogaster) as model for his research. Many processes in this small fly are in fact co...

Slow brain waves play key role in coordinating complex activity

...rate on another task," said UCSF's Kirsch. "On the fly you want to link these areas to do a task, and when the task is over, you want to decouple them and let them link up with someone else. Ryan has shown that the theta waves allow this coupling and uncoupling by locking into phase." Knight and his col...

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