'Supermap' of avian flu yields new info on source/spread
...5N1) that for the first time incorporates genetic, geographic and evolutionary information that may help predict...that appear to be associated with certain hosts or geographic regions appeared by chance, or whether they were true adaptations of the virus as it spread." Flu...... arrive and, over time, evolve into new species in geographic seclusion. Since islands have many times fewer species than the continent, it seemed only logical that continents were rich sources from which islands drew only a small sample. Once isolated and with fewer species around, island organisms were tho...Reproductive speed protects large animals from being hunted to extinction
...ted causes of habitat loss and living in a limited geographic area also are significant risks for extinction of a species, but under hunting pressure it's reproductive speed that really matters, according to a new statistical analysis by evolutionary biologist Samantha Price, a postdoctoral fellow at the Nation...Landmark study details demographic, ecological and genetic spread of rabies in raccoon outbreak
...enetic processes simultaneously shaped the virus's geographic spread over time. The study appears online in the ... rapid evolution while expanding their numbers and geographic range; yet, it is difficult to demonstrate how these processes interact, says Dr. Real. However, ...Prehistoric remains reveal a drastic shift in northern fur seal ecology
...nced major changes in their behavior, ecology, and geographic range of over the past 1,000 years, according to a new study appearing in the May 21 early online edition of The Proceedings of the National Academy of Sciences. Using techniques from archaeology, biochemistry, and ecology, a team of researchers* h...Study warns climate change and deforestation will lead to declines in global bird diversity
...eriled by the year 2050 due to reductions in their geographic ranges of greater than 50 percent. All estimates i...ption that birds will not dramatically shift their geographic ranges in response to a changing climate. "We found in our study that under certain assumptions by...Caribbean frogs started with a single, ancient voyage on a raft from South America
...dominate the fauna of an entire continent or major geographic region," explained Penn State's Blair Hedges, the evolutionary biologist and professor of biology who directed the research. "Because land connections among continents have allowed land-dwelling animals to disperse freely over millions of years, the...Largest synthetic gene ever built offers insights into anti-malarial drug resistance
...ates are the same, however. Parasites in different geographic regions have developed unique patterns of mutations in the three genes mentioned above. Now, researchers can tell where a drug resistant parasite comes from depending on the varied mutations in the three different resistance genes, Roepe said. "There...Caribbean frog populations started with single, ancient voyage on South American raft
...dominate the fauna of an entire continent or major geographic region," said Blair Hedges of Penn State, an evolutionary biologist who directed the research. "Because connections among continents have allowed land-dwelling animals to disperse freely over millions of years, the fauna of any one continent is usual......the pattern of evolutionary relationships with the geographic distribution of other fossil penguins, Clarke and colleagues estimate that the two Peruvian species are the product of two separate dispersal events. The ancestors of Perudyptes appear to have inhabited Antarctica, while those of Icadyptes may have o...New 'asthma gene' could lead to new therapies
...om. Its prevalence differs widely among different geographic areas. To account for the environmental factors associated with the disease, researchers structured their investigation to ensure that cases of childhood asthma were matched to children without disease from the same geographical areas. The team ...Clues to future evolution of HIV come from African green monkeys
...ertheim said. The researchers then looked at the geographic distribution of the four African green monkey species. The relative ages and information on which pairs of SIVagm were most closely related revealed the probable transmission route of SIV. The researchers hypothesize that the infection started in t...Tips from the Journals of the American Society for Microbiology
...nza viruses is of great concern worldwide as their geographic and host ranges continue to expand. Currently transmission to humans has been inefficient. Although there is limited knowledge of potential routes and determinants required for transmission, researchers predict genetic reassortment and mutation dur...Gene variant increases risk of blindness
...al neovascularisation or CNV) and dry (also called geographic atrophy or GA). The fast variant in the C3 gene increases the risk of both forms of the disease. The complement C3 gene has a central role in the immune system. The results of this research provide strong evidence that inflammation is an import...Rise of dinosaurs in Late Triassic more gradual than once thought
...dle latitude site in Pangea. This could indicate a geographic variation in survival of dinosaur precursors, or merely reflect the paucity of fossil finds, he said. Ghost Ranch, near the town of Abiquiu, where artist O'Keefe lived, is known for its Triassic fossils excavated from the Chinle Formation. Many of ...Picky eating potentially perilous for bats
...show that dietary breadth is not related to either geographic range size or wing structure, characteristics previously found to be associated with extinction risk in bats. Previous research has shown that habitat loss, roost availability, and gregariousness influence the extinction risk of bats, but the India...NCRR launches national network to connect investigators based at minority institutions
... health providers and community leaders into novel geographic and ethnically diverse research partnerships. The Data Technology and Coordinating Center for the network will be located at Jackson State University in Jackson, Miss. The center will provide a secure website, data management and data sharing tool...