Tag: "surprisingly" at biology news

Behemoth Animals May Follow Same Extinction Patterns

...ion for bothdinosaurs and proboscideans, we find a surprisingly similar pattern of extinction,"says Dr. Roger J. Cuffey, professor of geosciences. The Proboscideans -- mammoths, mastodons, stegodons and elephants -- arenot quite extinct, but with only two species left, they are far reducedfrom their heyday. The...

At Life's Most Sensitive Stage, Embryos Cope With Stress

...pe with stress in their embryonic stages. "We know surprisingly little at the cellular and molecular level about howembryos cope with their environments, yet the embryo is the most fragile stagein the life cycle, and its survival is critical for sustaining the life of aspecies," said David Epel, a professor of bi...

Despite Odds, Little Known Grauer's Gorillas Persist In Central Africa

...opulation ofthese mysterious primates has remained surprisingly stabledespite growing human pressures. Conservationists warn,however, that local populations have become increasinglythreatened due to political instability, hunting and deforestation. The research team, led by biologists from WCS and the Institut Co...

Max Planck Scientists Report Molecular Details On The Interaction Of The Stress Hormone Corticotropin-Releasing Factor (CRF) And Its Receptor

... 1 and 2). Frog CRF receptor 1 (CRF-R1) exhibits a surprisingly high ligand selectivity. Human/rat CRF or urocortin are bound with significantly higher affinity than ovine CRF or sauvagine, a frog-specific CRF analog. These results contrast with the observation confirmed by ...

Biggest Acoustics Meeting Ever

...n Baltimore (Suzanne Keilson, keilson@loyola.edu ) surprisingly found that listeners rated the sounds of the octagon-shaped guitar ashighly as those from the traditional box-shaped one (4pMU5). Judith Brown of Wellesley College inMassachusetts ( brown@media.mit.edu ) has designed an artificial intelligence progra...

Cancer Test May Offer High-Risk Groups Quick, Affordable Screening For Tumors

... Increases in the levels of these compounds were surprisingly large. "These dramatic changes suggest that it may be possible to use the testto detect some small tumors earlier than we ever could before," says Brusilow. If the test's sensitivity is confirmed, Brusilow believes it may bepossible ...

Tiny Jamaican Tree Crab Made Big And Fast Evolutionary Leap, Scientists Discover

...ecies thatspends its entire life in a tree, made a surprisingly rapid evolutionarytransformation from its large and rugged ocean-dwelling ancestors, according togenetic research to be published in the May 28 issue of the journal Nature by aninternational team of biologists. "These very unusual crabs, which are ...

Crossing Bacterial/Archaeal Boundaries

...cterium involves genes, enzymes and coenzymes with surprisingly high identity to some of those involved in the pathway of methanogenesis. These findings have implications for understanding not only the metabolism of these specific two groups of organisms, but to understanding the evolutionary history of C1 pathwa...

CSIRO Reduces 'Cellulite' In Oranges

... be associated with low calcium in the fruit, but surprisingly it often appears on trees which are high in calcium, and whose foliage contains high levels of the mineral." "Albedo breakdown does not affect internal fruit quality, but it makes oranges appear unsightly to consumers, down-grading their valu...

Fruit-Eating Birds Discovered Crucial To Rainforest Survival

...re vital agents of biodiversity. "The birds' surprisingly large range suggests that their own survivaldepends on preserving large expanses of rain forest intact," added Smith,who also holds a post as associate professor at the Center for PopulationBiology, University of California, Davis. The Ca...

Sex-Specific Behavior Controlled By Peripheral Nervous System

...ense claw with a 20 percent success rate, whichwas surprisingly high, he said. This resulted in a sample size of more than 80 animals to date. Physiological experiments that recorded the electrical activity of thetransplanted claw show it contained chemical sensors that respond to stimuli, aswould any fee...

Children, Pets Who Swallow Post-1982 Pennies At Risk For Stomach Upset, EvenUlcers

...ical Society of NorthAmerica (RSNA), show that the surprisingly common problem of ingested coins canpose a serious threat to children and pets. The research was supported by theDuke department of radiology. Dr. Sara O'Hara, a pediatric radiologist, and her Duke colleagues, Dr.Lane Donnelly, Dr. Emil Chuan...

Recycling Of Packaging Yields Environmental Gains

...ronmental gains from recycling rigid polythene are surprisingly large,"according to ErikWestin. "Recycling of paper and cardboard packaging is better than incinerating,but the totalenvironmental gain is not particularly great. Recycling has positiveenvironmental effects on landfill sites, since more active effort...

A Fresh Look At Love And War Between The Sexes

.... One explanation is that sex is a way to weed out surprisingly common adversegenetic mutations from the human gene pool. We profit from being sexual, as onescientist recently said, "to flush out these deleterious mutations." Anotherrelated explanation is that sex reduces fatal pathogen-stress. As Low pointsou...

New Insights Into The Transport Machinery Of The Cell: A Single Protein Substitutes The Regulatory Machinery Specifying Endosome Fusion In Vitro

...s,different protein combinations were tested. Most surprisingly it was found thata single protein, called EEA1, was necessary and sufficient to confer minimalfusion activity. Other experiments suggest that Rab5 and other associatedproteins acted upstream of EEA1, implying, that these Rab5 effectors compriseboth r...

New Gene May Help Scientists Understand More About How the Body Grows

...anism. The developmentprocess in these animals is surprisingly similar to that in human beings, but itoccurs much faster. In addition, unlike mammalian embryos, frog and zebrafishembryos are easy to obtain because they grow outside the mother--usually in astill pond, but just as readily in a petri dish. By st...

Studies Document Ease Of Ecosystem Disruption

...systems is both difficult to predict and sometimes surprisingly easy todisrupt, especially with the advent of human-related stresses such asover-exploitation, increased species extinctions and climate change. "As we consider the impacts of global warming, many people assume theeffects will be gradual, a s...

The Largest Bacterium: Scientist Discovers New Bacterial Life Form Off The African Coast

...gs. As an adaptation to this mode of life, theyare surprisingly resistant to extreme conditions such as high concentrations ofoxygen or sulfide, which would kill Thioploca. Thiomargarita are not just rare and exotic microorganisms. They occur in highbiomass of up to 47 g per square meter, thus playing an importan...

Findings suggest new oxygen-sensing application for material

...ntistsaccidentally discovered that the material is surprisingly sensitive to oxygen. To accurately measure temperature, they subjected the material, known as aferroelectric thin film, to a vacuum. But they found that reducing theatmospheric pressure also reduced the performance of the devices. Further testsshowed...

USGS assesses nation's biological resources at century end

... to ecosystems. Biological populations canrespond surprisingly fast in devastated areas; such is the case ofamphibians that recolonized in areas devastated by the Mount St. Helens'eruption. Land use, water use and nonindigenous, or nonnative, species are the threefactors having the greatest broad-scale effects ...

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