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Tag: "species" at biology news

Small species back-up giant marsupial climate change extinction claim

...mals to giant wombats and kangaroos including many species previously unknown to have occurred in the Darling...ies. It is essential to know if the risks faced by species and ecosystems today are the same as those in the past. "If we can document past environmental chan...

Yeast Network Prevents Damage By Oxygen Radicals

Reactive oxygen species (ROS), or 'oxygen radicals', have been identified as major contributors to signs of premature aging, increased cancer prevalence linked to inflammation-associated syndromes and a variety of human diseases. Now scientists at the University of Californ...

Study reveals new technique for fingerprinting environmental samples

...the vast numbers of different individual microbial species within the samples. Rubin argues that the genes a... are extremely complex, harboring numerous diverse species coexisting in a single locale," said Rubin. "By focusing on the information encoded in the DNA fragm...

Study: 'homemade' gene expression technology unreliable

...deeper into the genomes of humans and other animal species in their quest to find cures for a variety of diseases. "Human genome mapping has made the production of these microarrays possible," Spencer said. "Our interest is in how environmental factors ?drugs, pollutants, workplace substances, natural toxin...

Aggressive aquatic species invading Great Lakes

...ributed to or caused the extinction of some native species in Lake Erie, the first lake to be invaded. "Obvio...y people are concerned about the effects on native species in the other lakes that gobies have now spread to," says Balshine. ...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...ng where elephants, giraffes, lions and many other species gather day and night to drink or bathe during the ...an tell the difference between elephants and other species based on the spectral content of their footstep as they pass by a geophone array," says Jason Wood, ...

Anammox bacteria produce nitrogen gas in oceans' snackbar

... importance of anammox bacteria in the ocean. New species The anammox bacteria discovered in the Atlantic Ocean are closely related to the bacterial species Scalindua sorokinii, which was recently discovered in the Black Sea (Kuypers et al., 2003 Nature 8 A...

The evolutionary triumph of flower power

...ind them attractive. So the job of propagating the species depends mainly on us. A recent article in the journal "Evolutionary Psychology" by McGuire; Jeannette Haviland-Jones, a professor of psychology at Rutgers, The State University of New Jersey; and others, states that in spite of some basic survival u...

Roots Engage in Underground Chemical Warfare

...lain why a pathogen can cause disease in one plant species and not another," says Vivanco. "Our findings will...Mishkind said, "The puzzle of why so few bacterial species are pathogens remains a fascinating problem. The simple, yet elegant experimental approaches used by...

Habitat use by North Pacific right whales, Eubalaena japonica, in the Bering Sea and Gulf of Alaska

...y these whales have been recognized as a different species from right whales seen in the North Atlantic and others in the Southern Hemisphere. To help define areas and ecological parameters critical to the survival of this remnant population of right whales, habitat use was investigated by scientists at the...

Edible bivalves as a source of human pathogens: signals between vibrios and the bivalve host.

...rbino adds "In bivalve hemocytes, different Vibrio species and strains seem to adopt a common strategy utilized by pathogenic bacteria in mammalian cells: to undermine host cell functions through disregulation of its signaling pathways". This research gives an insight into the complexity of signals that pas...

New project aims to make large-scale lobster farms feasible

...bsters are one of the most highly-prized fisheries species in the world, and especially in our Florida waters...veniles that will help to make the culture of this species a reality, " she said. Spiny lobster is an ideal target for commercial culture due to its high valu...

Undesirable expatriates: Preventing the spread of invasive animals

...pread outside of their native range, many invasive species become economic and ecological burdens. Successful... ushering in biodiversity loss. Globally, invasive species are the second leading cause of animal extinction, preceded only by habitat loss. Not all introduce...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...food for larger organisms. But some phytoplankton species produce harmful blooms, known as red or brown tides, which release toxins in the water that can poison mollusks and fish. Excessively large blooms can also overwhelm a marine ecosystem by depleting oxygen in the water. Scientists suspect that many ha...

Road salt affects mitigation wetlands

...the designated runoff wetland. The effect on other species is not yet known. There was no decrease in midges ...her has students poised to look at the numbers and species of algae, amphibians, insects and bacteria in the salty and freshwater wetlands. "We would like to ...

Migratory songbirds have a specialized night-vision brain area

...aid. In their study, the researchers compared two species of night-migratory songbirds -- garden warblers an...n. The researchers found that the night-migratory species showed strikingly high activity in a particular cluster of cells located adjacent to a known visual ...

Taking the piste out of Alpine vegetation

...ignificant changes in the number and type of plant species in the European Alps. Sonja Wipf of the Swiss Fed...he University of Potsdam in Germany examined plant species at 12 Swiss ski resorts. They found that, compared with off-piste plots, there were 11% fewer plant ...

Symbiotic bacteria protect hunting wasps from fungal infestation

... fascinating symbiotic relationship between a wasp species and a newly discovered bacterial species ?a relationship that potentially sheds light on how bacteria can be successfully utilized by higher ...

Researchers find new giant amphibian fossils in Africa

Two new 250 million year-old species of large, meat-eating amphibians have been discove...relative isolation from the Niger fauna." The two species of amphibians discovered are similar to crocodiles in shape. Nigerpeton ricglesi had rounded noses, ...

Finding hidden invaders in a Hawaiian rain forest

... a high-altitude aircraft, scientists detected two species of invading plants that are changing the ecology o... from the plant leaves and used them to tell which species dominated specific areas. We employed the recently upgraded NASA Airborne Visible and Infrared Imagi...

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