species 2 8

Tag: "species" at biology news

Researchers find first evidence of venom system in extinct mammal

...s with similar grooves, but they didn't know which species of animal the loose fossils came from. The Bisonvaleus browni fossil was the first time they had seen teeth like this preserved within an intact upper and lower jaw, which is extremely rare for a specimen this old. "This just shows you that no matte...

Poaching, logging, and outbreaks of Ebola threaten central African gorillas and chimpanzees

...est on Earth. Protecting them protects many other species as well." The continuing spread of the Ebola virus through the region is a particular threat, with devastating effects on ape populations. Ebola spreads through contact with blood and other body fluids, putting bushmeat hunters and others who migh...

Deep thinking: Scientists sequence a cold-loving marine microbe

...nditions?" Among cold-adapted bacteria, Colwellia species have a decidedly chilly comfort zone. The bacteria typically require temperatures less than 20° to grow. Scientists have found C. psychrerythraea--which prefers temperatures of -1° to 10° --hugging sediments along the Arctic floor, floating in the op...

ORNL, UC Berkeley unravel real-world clues to Earth's mysteries

...etected 2,036 proteins from the five most abundant species in the bio-film, including 48 percent of the predicted proteins from the most abundant bio-film organism, Leptosprillum group II. Researchers noted that this work represents the first large-scale proteomics-level examination of a natural microbial c...

Motor transport in bio-nano systems

...mplex systems such as two-way traffic of two motor species that move along the same filament but in opposite ...ard Lipowsky Phase transitions in systems with two species of molecular motors Europhysics Letters 66, 90-96 (2004) ...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

...-keeping behavior has evolved in so many different species implies that this energetically demanding behavior provides significant, yet poorly understood benefits. Revealing those benefits and the nature of depth sensing will be a major and exciting challenge for future research in zooplankton ecology and ev...

Discovery of an American salamander where it shouldn't be: Korea

... type of salamander that comprises the majority of species in the world, but is totally unknown in Asia and r...he Americas. "I've discovered and named nearly 50 species of salamanders - more than 10 percent of the total in the world. I've discovered new genera in Guate...

Novel compounds show promise as safer, more potent insecticides

...dine, a natural alkaloid discovered years ago in a species of tropical plant, has been used to study muscle p...cticide is highly effective against many different species of caterpillars, says Masanori Tohnishi, a senior research scientist at Nihon Nohyaku. In early test...

Decisions, decisions: Male or female?

...n.") "Though we all know that the survival of the species depends on producing children, up until now we haven't understood how germ cells in the developing embryos decide whether to eventually become the sperm or eggs needed later for adult reproduction," said Mark Van Doren, assistant professor in the Dep...

Tufts researchers shine light on firefly mysteries

...fireflies' flashing light ?previously shown in one species to indicate superior physical and genetic quality ?has evolved in another species to provide misinformation to prospective mates. In other words, are some male fireflies lying in ord...

Wild grasses and man-made wheats advance research capabilities

... and state wheat breeder, is looking at wild grass species and synthetic wheats for possible solutions. "We'...icult." The researcher must pollinate from a wild species to a hexaploid wheat and then rescue and nurture the developing embryo to get a plant, he said. Hexa...

Can our genes tell the story of our divergence?

...A sequence level, yet scientists predict that both species should harbor genetic footprints of our divergence ?the subject of a recent study in the premier open-access journal PLoS Biology. One way to find such genetic signatures is to search for genes that reveal signs of positive natural selection. The as...

Bumblebees copy one another when contending with unfamiliar flowers

...each other when they knew nothing about the flower species that they were visiting. When revisiting a flower species that they had tried before, they relied upon their own individual initiative. It's not yet possible...

Could better mangrove habitats have spared lives in the 2004 tsunami?

... March 29, 2005), which involves subtle changes in species composition. From their assessments of the 24 coastal sites, the researchers concluded that even these seemingly minor alterations, which do not necessarily involve a reduction in mangrove area, have had a profound impact on the damage that the 2004 ...

Stem Cells to Solve the Blood Shortage Problem?

... March 29, 2005), which involves subtle changes in species composition. From their assessments of the 24 coastal sites, the researchers concluded that even these seemingly minor alterations, which do not necessarily involve a reduction in mangrove area, have had a profound impact on the damage that the 2004 ...

FSU scientist warns North Atlantic right whale facing extinction

...he average annual rate in 25 years of study of the species -- including six adult females, three of which carried near-term fetuses. At least four of the whales were killed by human activities; ships hit three; and one whale was entangled in fishing gear. Only 17 percent of all mortality is detected, so repo...

Scientists to mimic nature for newest cancer drugs

...he average annual rate in 25 years of study of the species -- including six adult females, three of which carried near-term fetuses. At least four of the whales were killed by human activities; ships hit three; and one whale was entangled in fishing gear. Only 17 percent of all mortality is detected, so repo...

Bacteria use host's immune response to their competitive advantage

...s, they must first compete against other bacterial species to colonize the mucus-lined surfaces of our noses....eir host, and we've found that the presence of one species leads to the elimination of another," says Jeffrey Weiser, coauthor of the study and professor of pe...

Size matters: Preventing large mammal extinction

...e more effective by focusing efforts on individual species as well as their habitats. Scientists at the Zool...t. "This understanding enables us to predict what species are most at risk in the future," said Dr Purvis. "That provides a way for conservationists to go on ...

Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations

...at chromosomes tend to break in the same places as species evolve, resulting in rearrangements of their DNA. Prior to the discovery of these breakage hotspots, the prevailing view among scientists was that such rearrangements occurred at random locations. "This study shows the tremendous power of using mult...

1 2 3 4 5 6 7 8 9 10