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Tag: "revealed" at biology news

Mule deer moms rescue other fawns

... own fawn was standing next to them safe and sound revealed they do not help other fawns because they mistake them for their own," said lead author Susan Lingle, who conducted the research as a postdoctoral fellow in biological sciences at the University of Alberta and in psychology at the University of Lethb...

How brain pacemakers erase diseased messages

...erapy works, their model of neurons in action also revealed that stimulation delivered at too slow a pace fails to keep bad information at bay. Indeed, slower pulses can actually add to problematic bursts, they showed. The model's findings closely parallel the clinical responses of patients, who typically ...

NASA-funded robotic sub finds bottom of world's deepest sinkhole

...space, the Deep Phreatic Thermal Explorer (DEPTHX) revealed that the geothermal sinkhole, or cenote, did not have a tunnel or any other obvious underwater connections with neighboring cenotes in the Mexican state of Tamaulipas. It also obtained numerous samples of water and the gooey biofilm coating the cenot...

Madagascan tropical forests return thanks to better management and well-defined ownership

...cal forest officials and villagers. This inventory revealed that loss of forest occurred mainly in areas with insecure property rights, while areas with well-defined local norms, rules and property rights for forest management showed either regenerating or stable forest cover. "Regeneration of tropical fo...

'Insulator' helps silence genes in dormant herpes virus

...mals and in fruit flies. What's more, the findings revealed that the viral DNA binds to CTCF in the same manner as the host DNA binds to the protein. "By binding in this manner, we believed the CTCF protein was interacting with other viral proteins to form a type of insulator in the virus structure," Zhou...

How the brain's backup system compensates for stroke

...that performance quickly recovered. The fMRI scans revealed that during this behavioral recovery, the right PMd and other areas involved in premotor function underwent a compensatory increase in activity. The researchers' experiments also established that this activity increase was functionally specific for t...

Chronic fatigue syndrome impairs a person's slow wave activity during sleep

...periods each night in order to show comparability, revealed that SWA, or other sleep EEG measures, did not differ between the CFS and healthy twins during a regular night's sleep. According to Armitage, it was only after a "challenge" to sleep regulation was introduced (keeping them awake an extra four hour...

8 plants from South Africa may hold potential for treating high blood pressure

...hose of another group (1999). Further testing has revealed that the plant has promising hypotensive affects. The plant is commonly associated with onions and garlic and highly concentrated in Southern Africa. It is best known as "wild garlic." Researchers have recorded (1962) that the plant was pounded i...

Brain's white matter -- More 'talkative' than once thought

...al signals in the OPCs. A further microscopic hunt revealed that pools of glutamate were present in the nerve fibers wherever they touched OPCs. All of the nerve cells in the white matter that released glutamate within reach of OPCs, moreover, had something in common: no myelin insulation. Normally myelin...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

University of Florida researchers have revealed how the inhaled form of anthrax paralyzes the body's defenses and prevents immune cells from reaching the site of infection. Anthrax killed five people in 2001 when letters containing the bacteria's spores were sent through the mail. The UF findings...

Scientists: As rainfall changes, tropical plants may acclimate

...e form of ammonia. Isotopic analysis of the plants revealed that they switched from nitrate to ammonia "abruptly, and in unison" once the rainfall reached a certain level. "There's an abrupt change halfway through the rainfall gradient, and they all switch to this other form for their nutrition," Schuur sa...

Gene mutation linked to cognition is found only in humans

... less than 5 million years ago. Gene sequencing revealed a mutation specific to humans that triggers a change in the splicing pattern of the neuropsin gene, creating a new splicing site and a longer protein. Introducing this mutation into chimpanzee DNA resulted in the creation of type II neuropsin. "Henc...

Warts vaccine -- 1 of many in pipeline

...an Study of Sex and Relationships of 20,000 adults revealed four percent of people had had visible genital warts. Dr Jardine said men and women with genital warts who would like to take part in the trial could call 3240 5881 to learn more. All calls are handled in confidence....

Researchers develop way to calculate speed of bacterial sex

...reviously published conjugation data. The findings revealed that bacterial transport and colonization of surfaces is as important a controlling factor for gene spread as was the rate of conjugation itself. It is important to consider all natural processes together when trying to predict rates of gene tran...

Spud origin controversy solved

Molecular studies recently revealed new genetic information concerning the long-disputed origin of the “European potato.?Scientists from the University of Wisconsin-Madison, the University of La Laguna, and the International Potato Center used genetic markers to prove that the remnants...

Study of protein folds offers insight into metabolic evolution

...w, global family tree of protein architecture also revealed that many metabolic protein folds are quite ancient: These architectures were found to be quite common in all the species of bacteria, animals, plants, fungi, protists and archaea the researchers analyzed. Of 776 metabolic protein folds surveyed, ...

Sleep quantity affects morning testosterone levels in older men

...ep time and morning testosterone levels. Analyses revealed that the amount of nighttime sleep measured by polysomnography was an independent predictor of the subjects?morning total and free testosterone levels. "The results of the study raise the possibility that older men who obtain less actual sleep dur...

Detecting poisons in nectar is an odour-ous task for honeybees

...with food. The newly-sequenced honeybee genome has revealed that honeybees do not have as many genes for taste receptors as other animals of a similar size, such as flies and mosquitoes. This prompted scientists to think that perhaps honeybees had a reduced need to detect and learn about toxins, despite the ...

Fish extinctions alter critical nutrients in water, study shows

...on to nitrogen recycling. The current study also revealed that species that heavily recycle nitrogen are not always the same ones that recycle the most phosphorus. These differences would make it difficult for conservationists to prioritize species to protect....

Flies don't buzz about aimlessly!

...f mathematical techniques the two researchers have revealed how the flight patterns of starved fruit flies constitute an optimal scale-free searching strategy ?like the fractal patterns of a snowflake, a fly flight path appears similar whether viewed up close, or from a distance. The researchers also foun...

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