Climate change isolates Rocky Mountain butterflies
...wed expanding forests are restricting Parnassius's movements in parts of the Rocky Mountains. He feels his latest study is a natural extension of his previous work. "It's important to study movement among populations that are becoming more and isolated due to shrinking habitats; but, ultimately, we need to s...Swarming starlings help probe plasma, crowds and stock market
...icularly good at uncovering clumping of particles, movements from order to disorder, and correlating the perfor...ad no obvious connection yet seem to share similar movements in share price. ...Satellite tracking reveals threats to Borneo pygmy elephants
...d soils. But the study also shows that elephants movements are noticeably affected by human activities and forest disturbance. Data gathered so far reveals there are probably not more than 1,000 pygmy elephants left in Sabah less than the 1,600 or so estimated previously. And, one important area for the e...New technology reveals seal behavior
...l sensors were attached to 85 seals to track their movements and collect data about their marine environment. Results are published this week in the journal Proceedings of the National Academy of Sciences. The seals were tagged at the islands of South Georgia, Kerguelen and Macquarie in the Southern Ocean, ...Satellite tracking will help answer questions about penguin travels
...will be released into the Atlantic Ocean and their movements traced using satellites and the Internet. ...ledge of the Magellanics' annual life cycle, their movements on the journey from their winter feeding grounds back to their breeding colonies along the southern ...Strength of connections between brain regions may affect an adolescent's response to peer influence
...then showed the children video clips of angry hand movements and angry faces and measured their brain activity. They found that the brains of all children showed activity in regions important for planning and extracting information about social cues from movement, but the connectivity between these regions was...Hepatitis C helicase unwinds DNA in a spring-loaded, 3-step process
.... You are loading the spring with small mechanical movements until finally you have accumulated enough tension on the DNA-protein complex to cause the rapid unwinding of three base pairs. Such reactions are energetically intensive, requiring the input of adenosine triphosphate (ATP) a cellular fuel source. ...Drug protects brain cells in Huntington's disease model, researchers find
..., but not the U.S., to treat uncontrollable muscle movements in Huntingtons and other neurological conditions. ...r children. Symptoms include jerky, uncontrollable movements called chorea and deterioration of reasoning abilities and personality. Symptoms begin after many br...Measuring the unseeable: Penn researchers probe proteins' dark energy
...l, but very fast, on the time scale of billions of movements per second, explains Wand. Proteins just twitch and shake. The internal motion represents a type of energy called entropy. Current models of protein structure and function used in research and drug design often do not account for their non-static n...News tips from the Journal of Neuroscience
... of Huntingtons disease (HD) as involving abnormal movements (chorea) and cognitive impairments. However, these patients also show disrupted circadian rhythms. Thus, Pallier et al. compared HD model R6/2 mice with wild-type mice to see how disrupted circadian rhythms might affect cognitive performance. As expe...Accident-prone? Scientists link brain function to knee injuries
...th sciences who led the study, said. These awkward movements have the biomechanical appearance of a knee buckling, but can be reproduced safely in the lab to study how people mentally prepare and react to unanticipated events. This made me wonder if we could measure whether these individuals had different me...Scientists identify 2 distinct Parkinson's networks
...e disease that causes tremors, rigidity and slowed movements in a million Americans also targets another brain network that regulates cognitive thought and the ability to carry out everyday tasks. David Eidelberg, MD, head of the Center for Neurosciences at The Feinstein Institute for Medical Research, and his...The fisherman is a predator like any other
...nal fi sh stock management. The characteristics of movements tracedbetween December 1999 and March 2003by the 809 vessel fl eet were comparedwith those of theoretical movement modelsusually applied to study trajectories of animals(2). The results showed that in their search forfi sh concentrations, the fi sher...MIT researchers reverse symptoms in mice of leading inherited cause of mental retardation
...se included hyperactivity; purposeless, repetitive movements reminiscent of autistic people; attention deficits and difficulty with learning and memory tasks. "These behavioral abnormalities are ameliorated, partially or fully, by inhibiting the enzymatic activity of PAK," Tonegawa said. "Notably, due to an...Scientists close in on missing carbon sink
...land more than we realized." Capturing vertical movements Most of the computer models produced incorrect estimates because, in relying on ground-level measurements, they failed to accurately simulate the movement of carbon dioxide vertically in the atmosphere. The models tended to move too much carbon di...News tips from the Journal of Neuroscience
...showed trial-to-trial variations in behavioral eye movements and in PC firing. This variability was low when eyes were fixed, and then increased during the pursuit phase. The variance in PC firing was predictive of trial-to-trial variance in behavioral responses at eye movement initiation. From their analysis,...Reconstructing the biology of extinct species: A new approach
...elps stabilize an animal's gaze and coordinate its movements as it travels through the environment -- should be irrevocably linked to the type of locomotion produced by its limbs. "If an animal evolves a new way of moving about the world, its organ of balance must evolve accordingly," Walker explains. From t...Massive herds of animals found to still exist in Southern Sudan
...ed a significant portion of kob due to the animals movements during the surveys. As a result, they believe that there could actually be well over a million white-eared kob in Southern Sudan. Combined with the tiang and Mongalla gazelle, the team believes this would represent larger numbers than even those of t...Researchers identify fifth gene responsible for Joubert syndrome
...nstem, the structures in the brain that coordinate movements and regulate basic functions such as breathing, swallowing, heart rate and consciousness. The study, published in the June 10, 2007 issue of Nature Genetics, confirms key information about the genetic changes that cause JS and cellular structures cal......l fish stock management. The characteristics of movements traced between December 1999 and March 2003 by the...anage this uncertainty while reducing unproductive movements to a minimum. This convergence found between prey search by fishermen and natural predators could...