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Tag: "behavior" at biology news

Scratch no more: Gene for itch sensation discovered

...tigate this possibility." They studied scratching behavior in two sets of mice — normal mice and GRPR knockout mice. Normal mice scratched vigorously when exposed to a variety of itch-producing substances, but the knockout mice scratched much less. "The fact that the knockout mice still scratched a little su...

Old memory traces in brain may trigger chronic pain

...D-Cycloserine, which has been used to treat phobic behavior over the past decade. In animal studies, D-Cycloserine appeared to significantly diminish the emotional suffering from pain as well as reduce the sensitivity of the formerly injured site. It also controlled nerve pain resulting from chemotherap...

Hormone helps mice 'hibernate,' survive starvation

...vival. “This hormone changes the metabolism and behavior of mice in the face of inadequate nutrition,” said Dr. Steven Kliewer, professor of molecular biology and pharmacology at UT Southwestern and the study’s senior author. “We hope to manipulate this hormone-receptor signaling pathway to craft the next ...

New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

...munities of chimpanzees across Africa vary in many behavior patterns, indicating they have cultures specific to each community. In the wild, however, it is difficult to prove behaviors are passed on by observation and learning. In this study, members of the international collaborative research team taught...

Undergraduate research shows leaderless honeybee organizing

... detecting a significant new detail concerning the behavior of the European honeybee – perhaps the most studie...thors were able to document details of bee social behavior that fundamentally confirm the hypothesis that major colony activities are initiated by the cumulati...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...immune system function. “Researchers in animal behavior often study what keeps sexual signals like bright colors or elaborate songs ‘honest,’ or why all individuals cannot produce them ad nausea and try to get mates,” said McGraw. “The reason typically is that long tails and fancy dances incur costs. Test...

Study shows lizard moms dress their children for success

...hem hard to catch). But the genes that control behavior and back pattern are not linked, so a lizard could end up with a mismatch that would leave it highly vulnerable to predators--wearing stripes and trying to hide in the grass, for example. Lancaster identified two pathways by which an extra dose of es...

CT scan reveals ancient long-necked gliding reptile

...r for Quantitative Imaging, the bone structure and behavior of these small creatures are now known. The new...with a long neck and swept back wings. Gliding behavior evolved several times in reptiles and is present in the Indonesian reptile Draco. ...

Plants recognize their siblings, biologists discover

... Dudley and her student, Amanda File, observed the behavior in sea rocket (Cakile edentula), a member of the mustard family native to beaches throughout North America, including the Great Lakes. So should gardeners arrange their plants like they would plan the seating at a dinner party" “Gardeners have...

Marine phytoplankton changes form to protect itself from different predators

... depending on which consumers are present.” The behavior could have implications for global climate change ... during some time periods. This complex defensive behavior also shows how environmental factors can affect even simple organisms, Hay noted. Phaeocystis ...

Research finds that circadian rhythms dominate all life functions

...ave long known that circadian rhythms regulate the behavior of the living, the study shows that daily rhythm dominates all life functions and particularly metabolism. The new study presents oscillation as a basic property of all genes in the organism as opposed to special function of some genes as previously ...

Prey not hard-wired to fear predators

...bou did not show the kind of vigilance, clustering behavior and flight observed in the same species living with wolves, bears or tigers. For example, elk in the mountains of Siberia—who subsist alongside tigers, wolves and bears-- responded five times faster to the recordings than did elk in Rocky Mountain ...

CU study reveals why starling females cheat

...ormer Cornell graduate student in neurobiology and behavior and now a research associate at the Cornell Laboratory of Ornithology and a Miller Research Fellow at the University of California-Berkeley. Usually, if a female bird (and at times if a human female) is caught cheating, the partner punishes her by...

Putting feelings into words produces therapeutic effects in the brain

...riences. It has also been implicated in inhibiting behavior and processing emotions, but exactly what it contributes has not been known. “What we’re suggesting is when you start thinking in words about your emotions —labeling emotions — that might be part of what the right ventrolateral region is responsib...

'Smart' mice teach scientists about learning process, brain disorders

...anipulation and monitoring the animals’ health and behavior over time. The findings may have applications ...understanding how the enzyme affects the brain and behavior might aid in the development of new treatments for these and other conditions, Dr. Bibb said. Th...

Moths mimic sounds to survive

...and red bats. Barber raised the bats in the lab so behavior learned in the wild would not influence the results of the experiment. Barber said anecdotal observations have suggested that animals such as snakes, owls and bees use acoustic mimicry. This study takes the next step and provides the definitive...

Scripps research team sheds light on long-sought cold sensation gene

...on. To test the hypothesis, the group observed the behavior of mice genetically altered to lack the gene in response to cold stimuli. When placed in compartments with a temperature gradient, or in an enclosure where they could choose between two temperatures, mice without TRPM8 showed essentially no prefe...

Technique monitors thousands of molecules simultaneously

... on the chip can be used to monitor the biological behavior of up to 12,000 molecules at the same time. The w... be generated and then probed for their biological behavior in real-time," said Moeller. "It's a tool, still being developed, to map receptors. We're right at t...

US control strategies may make flu epidemics worse, UCLA study shows

...municating, selfish individuals reach a collective behavior with respect to a common dilemma by adapting to what they think are other people's decisions. The group modeled each individual's strategy for making yearly vaccination decisions as an adaptive process of trial and error. They tracked both individual...

Genetic roots of bipolar disorder revealed by first genome-wide study of illness

...that occur in bipolar disorder, and the changes in behavior and energy level that accompany them, are sometimes disabling. Lithium and the other mood-stabilizing medications used to treat the condition help many patients. But some people do not respond to these medications, and clinicians need more opti...

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