For nearly two decades, a rare but potentially deadly fungus called Cryptococcus deuterogattii has gained a foothold in the Pacific Northwest and Vancouver Island. Duke researchers recently showed that lineages of the fungal pathogen Cryptococcus deuterogattii house a specific mutation in their DNA that increases their mutation rate. These hypermutators, as they are called, rapidly develop resistance to the antifungal drugs FK506 and rapamycin.
A new paper published in the Zoological Journal of the Linnean Society has identified and named 15 new species of spider in the Caribbean. Given the vernacular names 'smiley faced' spiders due to the distinctive markings on their backs, the new species have been given names including S. davidattenboroughi, S. barackobamai, and S.leonardodicaprioi.
Using the freshwater polyp Hydra as a model organism, Kiel University researchers and their international colleagues investigated how the simple nervous system of these animals interacts with the microbiome. They were able to demonstrate, for the first time, that small molecules secreted by nerve cells help to regulate the composition and colonisation of specific types of beneficial bacteria along the Hydra's body column.
In a study whose embargo lifts Sept. 25, Washington University in St. Louis scientists along with a Canadian biologist learn that brainier birds are better able to colonize inhospitable places, among other findings.
Tiny fish called Trinidadian guppies have individual 'personalities', new research shows.
Many research groups have explored human adaptation to high altitude living among three major far-flung global populations: Tibetans, Ethiopians and Peruvians. But few have simultaneously explored the other extreme---maladaptation----in the form of chronic mountain sickness (CMS). Now, in the largest whole genome study of its kind, an international research team led by University of California San Diego's Chairman of Pediatrics, Dr. Gabriel Haddad, has expanded on their recent study of understanding both adaptation extremes in a Peruvian population.
Human activities could change the pace of evolution, similar to what occurred 66 million years ago when a giant asteroid wiped out the dinosaurs, leaving modern birds as their only descendants. That's one conclusion drawn by the authors of a new study published in Systematic Biology.
Exceptionally preserved trilobite fossils from China, dating back to more than 500 million years ago, have revealed new insights into the extinct marine animal's digestive system. The new study shows that at least two trilobite species evolved a stomach structure 20 million years earlier than previously thought.
How did Neanderthals grow? Does modern man develop in the same way as Homo neanderthalensis did? How does the size of the brain affect the development of the body? A study led by the Spanish National Research Council researcher, Antonio Rosas, has studied the fossil remains of a Neanderthal child's skeleton in order to establish whether there are differences between the growth of Neanderthals and that of sapiens.
Some big plant-eating dinosaurs roaming present-day Utah some 75 million years ago were slurping up crustaceans on the side, a behavior that may have been tied to reproductive activities, says a new University of Colorado Boulder study.