diversity 2 3

Tag: "diversity" at biology news

Life in the extreme

...n with six different symbionts. This is the widest diversity of symbionts ever described in a bivalve species,"...viously realised. This fact adds to the biological diversity and ecological complexity of seep communities. Underwater mud volcanoes In the Nile deep-sea fan...

First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands

... larger animals, and changes in their abundance or diversity are often the first indicators of environmental im...e for the State of Hawaii a baseline record of the diversity of a relatively pristine area in order to have some basic working knowledge of what lives in the NWH...

Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals

...o understand the relationship between modern human diversity and the Neanderthal sequence. Their analysis showed that the Neanderthal sequence could not have come from any modern human population. The study suggests that Neanderthal and human genomes are greater than 99.5 percent identical, which leaves less...

Queen bee promiscuity boosts hive health

... colony disease resistance by boosting the genetic diversity of their offspring, the worker bees. "This required a particularly nasty experiment, in which we inoculated colonies with the most virulent disease of honeybees that is known, the dreaded American foulbrood disease," said Seeley. Specifically, Tarp...

Resistance and genetic sensitivity to sleeping sickness

...asis, in spite of a long period of infection. This diversity in host clinical presentation in reaction to infec...m focused particularly on the role of host genetic diversity in response to T. b. gambiense infection (whether or not the disease develops). As human experimenta...

New dwarf buffalo discovered by chance in the Philippines

...continental land mass. "Documenting past mammal diversity in the Philippines, an area of extremely high conservation priority, is vital for understanding the evolutionary development of the modern Philippine flora and fauna and how to preserve it," said Larry Heaney, a co-author of the study and curator of ...

To elude bats, a moth keeps its hearing in tune

...s" The authors point out that, in view of the vast diversity of bat calls, this is to be expected. ...

Proteins anchor memories in our brain

...y allows the receptors to recognize the tremendous diversity of invading pathogens. In the process, however, they also develop receptors that bind to the body's own proteins. These T cells are normally eliminated, avoiding the plague of autoimmunity. A clue to how the elimination process is controlled came...

Autoimmune disease triggered if T cells miss a single protein early on

...y allows the receptors to recognize the tremendous diversity of invading pathogens. In the process, however, they also develop receptors that bind to the body's own proteins. These T cells are normally eliminated, avoiding the plague of autoimmunity. A clue to how the elimination process is controlled came...

Otherworldly bacteria discovered two miles down

... team discovered that there is very little species diversity in the rock fracture community. Compared with bacteria in the water used for mining, the fracture water is dominated by one type of bacteria related to Desulfotomaculum, which is known to get energy from the reduction of sulfur compounds. "We als...

Study finds the air rich with bacteria

...widely varied bacterial population that rivals the diversity found in soil. They also found naturally occurring.... "Before this study, no one had a sense of the diversity of the microbes in the air," says lead author Gary Andersen of Berkeley Lab's Earth Sciences Divisio...

History-hunting geneticists can still follow familiar trail

...that variation, just like there would be a greater diversity of T-shirts or shoes within a larger population th...study of mtDNA tells us about the level of genetic diversity in a population, which is important in making conservation decisions on endangered species," Mulliga...

Wheat gene may boost foods' nutrient content

...erving the wild germplasm -- the source of genetic diversity -- of our crop species." Dubcovsky leads a consortium of 20 public wheat-breeding programs known as the Wheat Coordinated Agricultural Project, which is rapidly introducing GPC-B1 and other valuable genes into U.S. wheat varieties using a rapid-bre...

Researchers make progress in studying genetic traits of India-born populations

...orld. "We were struck both by the low level of diversity amongst people spanning such a large geographical region, and by the fact that people of the Indian sub-continent constituted a distinct group when compared to populations from other parts of the world," says Patel. Her group is using this study ...

International team analyzes human genetic variation in key immune region

... two factors: the extremely high degree of genetic diversity that exists in the MHC among different individuals and the tendency for multiple genetic differences in this region to be inherited together in groups called "haplotypes." To characterize the haplotype patterns of the MHC, the researchers analyzed ...

Study suggests evolutionary link between diet, brain size in orangutans

...of El Niño on tropical rain forest composition and diversity are also more marked in eastern compared to western parts." So Taylor and van Schaik undertook "a comprehensive re-evaluation of brain size among all orangutan species and subspecies," they wrote. Since they couldn't measure brain size in wild, l...

Ocean temperature predicts spread of marine species

...Sciences. "Temperature can alter the number and diversity of adult species in a certain area by changing where larvae end up," O'Connor said. "It is important to understand how a fish population is replenished if we want to attempt to manage or conserve it." Using data from 72 marine species, including c...

Fragmentation rapidly erodes Amazonian biodiversity

...pecies that provide fruit, nectar, and homes for a diversity of rainforest animals.? To understand how fragmentation is affecting the trees, the team studied 22 different characteristics of the increasing and declining species. “Our results show that tree communities in fragments are being completely restru...

USC team reveals structure of APOBEC family protein

...ily member, the AID protein, generates the genetic diversity required for the body to produce hundreds of billions of different antibodies, each capable of targeting a specific disease-causing agent. Others have been shown to disarm viruses like HIV and hepatitis B. Uncontrolled, of course, the APOBEC prote...

Recycled paper and compost could both be key tools to control plant disease

...ng plant diseases. In contrast compost contains a diversity of microbes that can suppress plant diseases. The ecological benefits of this are obvious: less fungicide has to be applied to plants, less peat is required thus preserving peat bogs, and green waste and paper waste that would otherwise be land-fill...

1 2 3 4 5 6 7 8 9 10