When sperm whales talk, UW researcher listens
...as orcas, will swim together, sperm whales tend to spread out," Dougherty explained. "They may be a kilometer or more apart. They're certainly in acoustic contact with one another, but you can't keep track of who's where with just a camera." To compound the problem, sperm whales tend to be out of sight mo...New evidence pushes back age of sex-determining chromosomes
...arrangements in the regions containing these genes spread alongthe Y chromosome, resulting in conditions that made it much less likely thatmale-specific genes could mix with genes on the X chromosome. The most famous example of such gene clustering is in fish. Male guppies havea number of genes for making...Why are the elderly so easily fooled by con artists?
...e aged between 26 and 55. Each group had a similar spread of educational backgrounds and all the volunteers performed normally in tests of memory, perception, language and reading. They then tested the volunteers on a gambling game. Each was given $2000 and four decks of cards. The object of the game was ......g. Since changes in mitochondrial DNA only have to spread through the maternal side of the genome, it appears to "evolve" more rapidly. Like the difference between an instant Polaroid snapshot and a photograph slowly developing in a darkroom, mitochondrial and nuclear DNA may be suited to capturing evolutio...Desert bees hedge their bets, wait for the wet
...ual funds for investments. As humans, we learn to spread out our risks all the time. Well, so have plants, and now we learn so have the desert bees." Bet-hedging also can have ecological effects, in that the sheer variety of pollinating desert bees might be enhanced by such a life history. "What's remar...USGS reports that West Nile virus goes beyond crows
...cies could play a significant role as we track the spread of this disease." McLean added, "The variety ...imal health agencies, is diligently monitoring the spread of the virus by conducting field investigations, processing wildlife specimens, and keeping these ag...Human plague cases increasing in Southwest
...pulations, especially ground squirrels, and plague spread throughout western North America. Plague is now most commonly found in the southwestern United States -- in New Mexico, Colorado, Arizona and California. Major risk factors for humans include contact with diseased wild mammals or their infected fle...It only takes one fish to wipe out a population
...the same advantages. So the hGH gene would quickly spread through a fishpopulation. But Muir and Howard als...reproductiveage compared with wild medakas. So the spread of the growth hormone gene could make populationsdwindle and eventually become extinct. To quantify...Fox Chase Cancer Center's Joseph Testa receives 1999 Irving J. Selikoff Award for Cancer Research
...thelium, of the chest cavity and lungs, but it can spread aggressively to the lining of the abdomen and to other organs. Although no one has yet determined exactly how much asbestos exposure is necessary to cause mesothelioma, Testa's laboratory research is revealing the various cancerous changes that occur...West Nile Virus may be new deadly strain, USGS tells Congress
...es, McLean testified. "Migratory birds could also spread the virus to other states outside of the New York City area," he said. "Enhanced monitoring through surveillance for early, rapid detection of West Nile virus in states outside the affected area will be important to guide prevention measures." Th...... everything else, the right term is crucial to the spread of information. (The term "biodiversity," for example, had an enormous impact upon the spread of ideas relating "to biological variety as a cherished resource," said Avise.) They came up with th...Big bang theory of human evolution?
...volved in Africa about two million years ago, then spread to other regions of the world," says John Hawks, first author of the paper and now an assistant professor of anthropology at the University of Utah. "This original population lived before humans colonized regions outside of Africa. In fact, it was ...Dartmouth research offers clues to new anti-microbial treatments
...aratus can form and the pathogenic bacteria cannot spread or cause disease. The Dartmouth researchers develo...olera, a severe life-threatening diarrheal disease spread by ingestion of contaminated water or food. Cholera is not common in the United States due to effic...Rapid size change in introduced fruit fly indicates it is evolving as it invades North America
... sometime around 1978. Since then, the flies have spread over an area spanning more than 16 degrees of lati...tal Argentina. In North America, D. subobscura has spread from Santa Barbara, Calif., north to the tip of Vancouver Island in Canada. They also have been tra......r floods. Whatever the reason, these diseases have spread just as human diseases did. "In the same way that... disease transmission, "spill-over," refers to the spread of infectious agents from reservoir animal species (often domestic animals) to wildlife. Outbreaks o...Licensing procedure for genetically modified organisms turns out to be fallible
...es and whetherthey expect hereditary changes to be spread within the environment. By formulatingthe questions in this way, the body awarding the licenses places the responsibility forthe provision of information in the hands of the applicant. The Leiden philosophers say that licenses can only be awarded in...Non-toxic peptide blocks spread of prostate cancer in rats
... cells' invasive activity and limit the growth and spread of tumors in laboratory rats. U-M scientist Donn...h the blood or lymphatic system and metastasize or spread to other parts of the body." In early cell culture studies, Livant discovered that metastatic tumor...Transgenic fish could threaten wild populations
...pulation by a small number of transgenic fish will spread as a result ofenhanced mating advantage, but the reduced viability of offspring will cause eventual local extinctionof both populations. Such risks should be evaluated with each new transgenic animal before release....Formosan termite may be top concern of entomologists of the new millenium, according to report
...lth importance, and their incidence and geographic spread are increasing," said Hunter. "Malaria, leishmania...ut more subtle effects are harder to predict." The spread of emerging and resurgent insect-borne diseases has a number of causes. In some cases, the spread ca...... of animals such as moose and salamanders, and may spread non-native species. Roads can also affect aquatic ecosystems because streams are often channelized or rerouted, and wetlands are often partially drained. In addition, traffic noise can reduce the abundance of birds by a third; scientists believe that...