Tag: "behavior" at biology news
Molecular Marker May Identify Bladder Cancer Patients Most Likely To Recur
...wth, and is thought to contribute to theaggressive behavior
of some tumors. Importantly, in this study, researchers found that some patients withdysfunctional p53 are able to maintain p21 expression. These patients showsimilar rates of recurrence and survival as patients with normal p53 and p21."We reasoned t...
Dismantling Dangerous Genetic Codes With A Faster, More Flexible RNA Mimic
...University, has created a molecule that mimics the behavior
of a kind ofnaturally occurring RNA (ribonucleic acid) called a ribozyme, which acts as acatalyst. Bashkin's ribozyme mimic can dismantle the dangerous genetic codesinvolved in propagating viral and fungal diseases, certain cancers and even theHIV v...
Salamanders May Reveal Best Way To Manage Forests
...toknow whether that is just a result of changes in behavior
or if there is reallya change in population size. For more information, contact Douglas Harpole at 540-231-5703 or email@example.com or Shannon Knapp at 540-552-3871 (H) or 540-231-5703 (O).Dr. Haas will be unavailable until July 30 but you can leave ...
New Satellite Tags Track Movements Of Atlantic Bluefin Tuna
...In that way,management strategies can reflect fish behavior
in the real world. With thistechnology it will be possible to manage giant bluefin tuna so mature breedingstocks could recover in our lifetime." A 1994 report by the National Research Council recommended that fisheriesscientists test the stock struct...
Duke Studies Show U.S. Central Plains Vulnerable To Global Warming
...nge as globaltemperatures rise, Camill studied the behavior
of the peatlands along anorth-to-south line from colder to warmer regions. The colder regions featuremore or less permanent permafrost, while the warmer ones show considerablescarring. Camill discovered that the local dynamics of peat collaps...
Duke Studies Show That Environmental Effects Of Dams Extend To Insect Life
...ed to trace the butterflies'movements and breeding behavior
with trapping-and-release experiments. She usedrotting banana-baited traps to snare hungry butterflies in netting. Then shemarked the trapped insect's wings, released them, and retrapped the markedbutterflies later on at other locations. Thes...
Clockwork Clues Determined
...an rhythm, the 24-hour light-dark cycle that times behavior
and metabolism for most organisms from plants to people. In humans, delayed resetting by the clock is an underlying cause of jet lag, and clock malfunction has been linked to seasonal affective disorder and various sleep and mental disorders. DMS...
Paper Wasp Queens Wait To Hijack Or Adopt
... them, but who wouldhave thought we'd see the same behavior
in insects?" Are the wasps acting like cuckoos because they are lazy or just plain mean? "We've known about usurping and adopting for a long time, but we thought thequeens came from destroyed nests or were subordinate queens who had left theirpreviou...
Sturgeon, Trout And Telemetry--USGS Research Mixes Science And Technology At American Fisheries Society Annual Meeting
...stic telemetry devices monitored the migration and behavior
of the eels near a hydroelectric dam. Most eels moved through the dam area at night at a variety of depths, and some were delayed for several days before passing the dam. The results of the study will be critical for developing effective eel passag...
USGS Scientists Learn Lessons From Captive Released Manatees
...s have observed Georgia engaged in normal nursing behavior
and thatGeorgia and her calf are doing fine. Georgia and Mo could be described as reflecting the extremes of captive manateerelease success and failure, respectively, Lefebvre said. "Mo's experience reminded us of something we already know about man...
Study Pinpoints Rare Molecular 'Transitions' As Possible Cause Of Skin 'Photoaging'
...en a physiological actionspectrum for that type of behavior
and a molecular absorption process. Now thereis." The observation that singlet oxygen formation involves weak transitionsmay explain why photoaging is a long-term process, Simon said. "Urocanic acid in UV-A doesn't absorb very strong...
Genetically Engineered Mice Show Characteristic Signs Of Alzheimer's, Could Be Ideal Tool For Testing New Therapies
...ad of mouse apoE. Theresearchers then observed the behavior
of these mice in a variety of controlledlaboratory situations that require specific cognitive skills. The apoE4 mice performed poorly in tests requiring spatial learning andmemory skills and were less likely to explore their environment than ...
Study Shows First Significant Genetic Evidence For Schizophrenia Susceptibility
...rganized orincoherent speech, greatly disorganized behavior
described ascatatonic. (Catatonia is marked by inappropriate movement: those with it mayrefuse to m...
Chumminess Of Roundworms Linked To Single Gene, Offering Insight Into Mechanisms
Of Social Behaviors
...exploring the way in which modifications in social behavior
occur, saidBargmann. These genes produce receptor... have potentand long lasting effects on choices of behavior
patterns," she said. "I'd beinterested in seeing if it does represent a source of behavioral variat...
Computer Simulation To Predict Forest Fires
...-year, 50-year or 100-year. This is an example of behavior
on the part of weather. "It's an interesting class of phenomena," he says. "Small landslides build up to large landslides, and I suppose this model can be applied to something like the stock market, which also shows a degree of self-organized criti...
Birds Of A Feather: The Physics Of Flocks
...ge interactions addedup to explain the large-scale behavior
of the whole flock. In contrast, theNavier-Stokes equations describe the overall behavior
of the fluid whileignoring the fact that the fluid is made up of individual constituents, such asato...
Mechanism Of Protein Folding Unraveled, With Eventual Implications For Treating
Diseases Caused By Folding Errors
...standwhich of these signals represent real protein behavior
and which give youmisleading clues that simply depend on the kind of experiment you are doing.Understanding the folding process and the real time scale of events begins togive you some idea of what you can do to fight diseases like Alzheimer's." ...
Leptin Regulates Hunger During Energy Deficit In Women
...e, but less is known of its influence on ingestive behavior
and energy balance in humans. Objective: We examined the effect in women of a chronic energy deficit on plasma leptin concentrations and self-reported appetite and explored possible relations between leptin and appetite sensations. Design: Twelve...
Genetic Link Shows Children With Allergies Have Greater Tendency To Have Behavior Problems Than Children With No Allergies
...es have a greater tendency to also havesignificant behavior
problems, such as aggressiveness, depression andirritability than children with no allergies, according to research at NationalJewish Medical and Research Center. The chance that a child has behaviorproblems if he or she also has allergies is about ...
Smoke breathes new life into a forest
... responses triggered among plants may suggest fire behavior
has an important ecological impact on postfire com...te University explore the effects of scent-marking behavior
of river otters on surrounding terrestrial plants in south-central Alaska. River otters deposit uri...
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