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Latest Evolutionary biology Stories

Genetic Hitchhikers Picked Up By Evolution
2013-07-23 11:01:42

Princeton University In a twist on "survival of the fittest," researchers have discovered that evolution is driven not by a single beneficial mutation but rather by a group of mutations, including ones called "genetic hitchhikers" that are simply along for the ride. These hitchhikers are mutations that do not appear to have a role in contributing to an organism's fitness and therefore its evolution, yet may play an important role down the road. Researchers from Princeton University...

Evolution Is Predictable Shown by Lizards
2013-07-19 10:21:14

University of California - Davis If you could hit the reset button on evolution and start over, would essentially the same species appear? Yes, according to a study of Caribbean lizards by researchers at the University of California, Davis, Harvard University and the University of Massachusetts. The work is published July 19 in the journal Science. The predictability of evolution over timescales of millions of years has long been debated by biologists, said Luke Mahler, a postdoctoral...

Antibiotic Overuse Could Lead To Serious Threat From Superbugs
2013-07-14 06:29:55

Michael Harper for redOrbit.com - Your Universe Online Australia's Office of Chief Scientists released a report on Friday that claims the misuse and overuse of antibiotics could soon send the world back to a nineteenth century era where typical diseases and infections could pose a serious threat. According to the report, many bacterium have become immune to the drugs that are often prescribed to treat those with ear infections, sore throats and more. These claims echo other recent...

Mammals Choose Sex Of Their Babies To Promote Life
2013-07-11 12:57:38

Lee Rannals for redOrbit.com - Your Universe Online Mammals are able to "choose" the sex of their offspring in order to beat the odds and produce extra grandchildren, according to a study published in the journal PLoS ONE. Researchers analyzed 90 years of breeding records from the San Diego Zoo, helping to prove for the first time what has been a fundamental theory of evolutionary biology. Scientists have theorized before that mammals rely on some unknown physiologic mechanism to...

2013-07-11 12:20:41

David Wallinga from Keep Antibiotcs Working: the Campaign to End Antibiotic Overuse in Animal Agriculture, believes that physicians and policymakers have "overlooked the critical role played by the ongoing overuse of antibiotics in livestock and poultry." He understands the interest in creating a pipeline of new antibiotics, but says overall reductions in antibiotic use "should come first." He points to data showing that, in 2009-11, 72% of all US sales of antimicrobials comprised those...

Evolution Not Fast Enough For Climate Change
2013-07-10 15:17:43

Brett Smith for redOrbit.com - Your Universe Online New research from two biologists at the University of Arizona and Yale suggests that evolution is not an option for species looking to cope with rising global temperatures. According to a study, terrestrial vertebrate species could not adapt to the 4 degree Celsius rise in average global temperatures, and many of these species could be driven to extinction. "Every species has a climatic niche, which is the set of temperature and...

2013-07-10 12:04:22

A new study has shed light on the potential of birds to survive in the face of climate change. In the analysis, based on more than fifty years' detailed study of a population of great tits near Oxford, UK, a team of scientists were able to make predictions about how the birds could cope with a changing climate in the future. They found that for small, short-lived birds like the great tit, evolution can work fast enough for genetic adaptation to keep pace with a changing environment. However,...

2013-07-10 10:34:21

Some people possess a small number of cells in their bodies that are not genetically their own; this condition is known as microchimerism. It is difficult to determine potential health effects from this condition because of humans’ relatively long life-spans. Now, researchers at the University of Missouri have found that microchimerism can be found in dogs as well. Jeffrey Bryan, an associate professor of oncology at the MU College of Veterinary Medicine and director of...

2013-06-21 13:05:27

As past extinctions show, groups must continually adapt and evolve or they disappear The death of individual species is not the only concern for biologists worried about groups of animals, such as frogs or the "big cats," going extinct. University of California, Berkeley, researchers have found that lack of new emerging species also contributes to extinction. "Virtually no biologist thinks about the failure to originate as being a major factor in the long term causes of extinction,"...

2013-06-20 11:13:54

Low doses of silver make bacteria more susceptible to antibiotic attack, paving the way for new therapies for drug-resistant and recurrent infections Slipping bacteria some silver could give old antibiotics new life, scientists at the Wyss Institute for Biologically Inspired Engineering at Harvard University reported June 19 in Science Translational Medicine. Treating bacteria with a silver-containing compound boosted the efficacy of a broad range of widely used antibiotics and helped...


Latest Evolutionary biology Reference Libraries

2014-04-22 14:47:42

John Harold Ostrom (February 18, 1928 – July 16, 2005) was an American Paleontologist who was greatly influential in the revival of scientific research on Dinosaurs. He is best known for demonstrating that Dinosaurs were less like contemporary reptiles but more closely related to large, flightless birds like the ostrich – a theory that holds its ground in the paleontological community to this day. John Ostrom was born and raised in Schenectady, New York. His father was a physician, and...

Paleontology
2014-01-12 00:00:00

Paleontology or Palaeontology is the scientific study of prehistoric life, including the study of fossils to determine the organisms evolution and interactions with each other and their environments. Paleontological observations have been documented as far back as 5th century BC. The science became established in the 18th century as a result of Georges Cuvier’s work on comparative anatomy, and it developed quickly within the 19th century. The term itself comes from Greek palaios, meaning...

New Phytologist
2012-04-30 15:00:51

The New Phytologist is a peer-reviewed scientific journal published by Wiley-Blackwell on behalf of the New Phytologist Trust. It covers all aspects of plant science, with topics ranging from intracellular processes to global environmental change. Articles are published in the following categories: Original research articles, Research reviews, Commentaries, Letters, Meeting reports, Tansley reviews. The following topics and subtopics are covered: Physiology and development:...

Journal of Zoological Systematics and Evolutionary Research
2012-04-29 22:59:00

Journal of Zoological Systematics and Evolutionary Research is a quarterly peer-reviewed scientific journal published by Wiley-Blackwell. It was originally established in 1963, then reestablished in 1994 by John Wiley & Sons. It was published as ‘Zeitschrift für zoologische Systematik und Evolutionsforschung’ from March 1963 to June 1994. It was published by the Academic Publishers’ Association (Akademische Verlagsgesellschaft ) Frankfurt, Germany. The editor-in-chief is Dr....

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Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'