Biology News Net
Biology

Category: Biology

Spanish researchers have studied the fossil record of hadrosaurs, the so-called 'duck-billed' dinosaurs, in the Iberian Peninsula for the purpose of determining that they were the last of their kind to inhabit the European continent before disappearing during the K/T extinction event that occurred 65.5 million years ago. Most notable among these fossils is the discovery of a new hadrosaur, the Arenysaurus ardevoli, found in Huesca, Spain.

For more than 25 years, all attempts at culturing pearls from the queen conch (Strombus gigas) have been unsuccessful—until now. For the first time, novel and proprietary seeding techniques to produce beaded (nucleated) and non-beaded cultured pearls from the queen conch have been developed by scientists from Florida Atlantic University's Harbor Branch Oceanographic Institute (HBOI). With less than two years of research and experimentation, Drs. Héctor Acosta-Salmón and Megan Davis, co-inventors, have produced more than 200 cultured pearls using the techniques they developed. Prior to this breakthrough, no high-quality queen conch pearl had been cultured. This discovery opens up a unique opportunity to introduce a new gem to the industry. This significant accomplishment is comparable to that of the Japanese in the 1920s when they commercially applied the original pearl culture techniques developed for pearl oysters.

Moose eat plants; wolves kill moose. What difference does this classic predator-prey interaction make to biodiversity?

Ever since the Falklands wolf was described by Darwin himself, the origin of this now-extinct canid found only on the Falkland Islands far off the east coast of Argentina has remained a mystery. Now, researchers reporting in the November 3rd issue of Current Biology who have compared DNA from four of the world's dozen or so known Falklands wolf museum specimens to that of living canids offer new insight into the evolutionary ancestry of these enigmatic carnivores.

BiologyNovember 2, 2009 05:01 PM

We all know adolescents get testy from time to time. Thank goodness we don't have young tyrannosaurs running around the neighborhood.

The complicated sex life of the papaya is about to get even more interesting, thanks to a $3.1 million grant from the National Science Foundation. The grant will fund basic research on the papaya sex chromosomes and will lead to the development of a papaya that produces only hermaphrodite offspring, an advance that will enhance papaya health while radically cutting papaya growers' production costs and their use of fertilizers and water.

The coconut rhinoceros beetle (CRB) invasion, first detected in 2007, has been checked by the determined efforts of UOG scientists, Guam Department of Agriculture and the United States Department of Agriculture. "We've stopped the expected population explosion," says UOG entomologist Aubrey Moore, "due to the rapid response of the government of Guam and the federal government. The infestation has been contained to the northwest coast of the island, but we have yet to see a decrease in the population."

Dinosaurs may be the focus of much Cretaceous fossil hunting, but a Penn State researcher and his colleagues are hot on the trail of fossil plants in Patagonia, Argentina, thanks to a $1.57 million grant from the National Science Foundation as part of the American Recovery and Reinvestment Act.

The Government of Nepal announced today an expansion of Bardia National Park in the Terai Arc Landscape by 900 sq km, which will increase critical habitat for tigers.

Experiments led by researchers at the University of California, Berkeley, have demonstrated that normally friendly ants can turn against each other by exploiting the chemical cues they use to distinguish colony-mates from rivals.

What do a West African drummer and a sperm whale have in common? According to some reports, they can both spot rhythms in the chatter of an ocean crowded with the calls of marine mammals -- a feat impossible for the untrained human ear.

Cornell researchers have discovered a genetic mechanism in fruit flies that prevents two closely related species from reproducing, a finding that offers clues to how species evolve.

A Spanish researcher has analysed the preferences of wolves from the north east of the Iberian Peninsula to demonstrate that, in reality, their favourite prey are roe deer, deer and wild boar, ahead of domestic ruminants (sheep, goats, cows and horses).

BiologyOctober 20, 2009 11:26 PM

"2009 Deep Ocean Odyssey" will be held October 21, 2009 in Kristiansand, Norway from 12:00-15:00 Western European Time and live webcast at http://www.mar-eco.no/

Genetic information from an extinct species of bison preserved in permafrost for thousands of years could help improve modern agricultural livestock and breeding programs, according to University of Adelaide researchers.

By directly manipulating the activity of individual neurons, scientists have given flies memories of a bad experience they never really had, according to a report in the October 16th issue of the journal Cell, a Cell Press publication.

The evolution of altruism has long puzzled researchers and has mainly been explained previously from ultimate perspectives—I will help you now because I expect there to be some long-term benefit to me. However, a new study by researchers at the Primate Research Institute (PRI) and the Wildlife Research Center (WRC) of Kyoto University shows that chimpanzees altruistically help conspecifics, even in the absence of direct personal gain or immediate reciprocation, although the chimpanzees were much more likely to help each other upon request than voluntarily. The findings are published October 14 in the open-access, peer-reviewed journal PLoS ONE.

Imagine the gruesome sound of bones snapping as a thirsty, 30-ton dinosaur tramples a heap of fresh carcasses on his way to a rapidly shrinking lake.

For an animal that has a brain about the size of two grains of sand, a lot of plasticity seems to be packed into the head of the tropical paper wasp Polybia aequatorialis.

When Professor Joel Levine's team genetically tweaked fruit flies so that they didn't produce certain pheromones, they triggered a sexual tsunami in their University of Toronto Mississauga laboratory. In fact, they produced bugs so irresistible that normal male fruit flies attempted to mate with pheromone-free males and even females from a different species—generally a no-no in the fruit fly dating scene.

Known to science only by two specimens described in 1900, a critically endangered crow has re-emerged on a remote, mountainous Indonesian island thanks in part to a Michigan State University scientist.

Conservation biologists are setting their minimum population size targets too low to prevent extinction.

An international group of researchers from the University of Leicester (UK), and the Geological Institute, Beijing (China) have identified a new type of flying reptile – providing the first clear evidence of an unusual and controversial type of evolution.

The intense exchanges that human mothers share with their newborn infants may have some pretty deep roots, suggests a study of rhesus macaques reported online on October 8th in Current Biology, a Cell Press publication.

Among the many surprises associated with the discovery of the oldest known, nearly complete skeleton of a hominid is the finding that this species took its first steps toward bipedalism not on the open, grassy savanna, as generations of scientists – going back to Charles Darwin – hypothesized, but in a wooded landscape.

New research from the University of Southampton has demonstrated that it is possible for communication from person to person through the power of thought alone.

Staying at home may have given the very first termite youngsters the best opportunity to rule the colony when their parents were killed by their neighbors. This is according to new research supported by the National Science Foundation and published today in the Proceedings of the National Academy of Sciences.

Scientists from British Antarctic Survey, National Institute of Polar Research, Tokyo, and Hokkaido University, Japan, have recorded the first observations of how albatrosses feed alongside marine mammals at sea.

Seven new glow-in-the-dark mushroom species have been discovered, increasing the number of known luminescent fungi species from 64 to 71. Reported today in the journal Mycologia, the new finds include two new species named after movements in Mozart's Requiem. The discoveries also shed light on the evolution of luminescence, adding to the number of known lineages in the fungi 'family tree' where luminescence has been reported.

Now, just a few weeks after tiny, early Raptorex kriegsteini was unveiled, a new wrench has been thrown into the family tree of the tyrannosaurs. The new Alioramus altai—a horned, long-snouted, gracile cousin of Tyrannosaurus rex—shared the same environment with larger, predatory relatives. A paper published this week in the Proceedings of the National Academy of Sciences describes this exceptionally well-preserved fossil, shedding light on a previously poorly understood genus of tyrannosaurs and describing a new suite of adaptations for meat eating.

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