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Tag: "species" at biology news

Scientists discover odd-ball rodent

...resents an entire new family of wildlife. The new species is described in the recent issue of the journal Sy...WF Thailand. Called Kha-Nyou by local people, the species was discovered by WCS researcher Dr. Robert Timmins in a hunter's market in Central Laos. WCS is wor...

Researchers discover key gene involved in bark beetle pheromone production

...according to Blomquist. There are several hundred species of bark beetles, which are in the insect family Scolytidae. These beetles are difficult to control via insecticides because they live almost all of their lives, from eggs to adults, burrowed under thick bark where they are protected. Only for a few h...

Ancient DNA helps clarify the origins of two extinct New World horse species

... also whittled down the taxonomy of North American species to just two. "I think the biggest issue is that we showed the apparent lack of species diversity in North American horses in the Late Pleistocene - as horses are a poster child of evoluti...

Key to elephant conservation is 'in the sauce'

...s a means of keeping elephants, buffalo, and other species away from important sources of human food, but has also introduced a viable cash crop to the economy of African nations. "Chilli peppers are unpalatable to crop-raiding mammals, so they give farmers an economically feasible means of minimizing damag...

UN: World in big ecological mess

...0 to 30 per cent of the mammal, bird and amphibian species currently threatened with extinction. * Ecosystem degradation is a barrier to achieving the MDGs. In all the four plausible futures explored, scientists project progress in eliminating hunger, but at far slower rates than needed to halve the scourge...

Discovery could be key to bioterrorism defense

...for both the Hendra and Nipah viruses. Many animal species are vulnerable to these viruses, making the potential for amplification in intermediate hosts and transmission greater. Ephrin-B2 is highly conserved in animals, and this finding sheds light on how these viruses can infest such a wide range of hosts....

Scientists discover global pattern of big fish diversity in open oceans

...xample, was once the world's most diverse area for species of tuna and billfish ?and an important tuna spawni...here fishermen might have once caught 10 different species in an area on average, now they catch only five. "It's not yet extinction; it's local fishing out of...

Program finds lost genes in nematode genome

...enomes, including those of mammals, other nematode species and most recently the fungus Cryptococcus neoformans. Brent's approach to gene prediction stands traditional genome annotation on its head because it starts with a computer analysis of the genome sequence, using that as a hypothesis designing experim...

Two studies document rise of superbugs in the environment

...en they were admitted to the hospital. Of the four species of MDR bacteria that the researchers examined, three of them--including Escherichia coli, a familiar bug that can cause urinary tract infections--were involved in the upswing. The spread of multidrug resistance in bacteria appears to have two main c...

Fungus-farming termites descend from an African rain forest Eve

...d gave rise to the many fungus-cultivating termite species alive today in various parts of the Old World. Th...cestral habitats is based on the habitat of living species and analysis of DNA-based reconstructions of termite relationships. The rain forest origin of fungu...

Certain fish have a special mating preference

...bvious link to reproduction, which largely defines species boundaries. Evolutionary changes in male genital m...ium size is highly variable among livebearing fish species -- ranging from less than 20 percent of the body length to more than 70% -- I am extending the resul...

IMF Launches World’s First DNA Database for Myeloma Patients

...bvious link to reproduction, which largely defines species boundaries. Evolutionary changes in male genital m...ium size is highly variable among livebearing fish species -- ranging from less than 20 percent of the body length to more than 70% -- I am extending the resul...

Proteomics brings researchers closer to understanding microbes that produce acid mine drainage

...- the key to understanding the role each bacterial species plays in the biofilm community. "Genomes tell you... The new proteome confirms that this is a keystone species in more ways than one. "We were somewhat surprised to see that Leptospirillum group III, that same ...

Researchers develop promising new gene network analysis method

...ely informative in analyzing the genomes of simple species such as yeast," Sedivy said. "Here, the theory is applied to a much more complex system: humans. The overall concept ?the time series experiments and the combination of statistics and network theory ?is quite novel. This should be an important new ap...

Chickadees can help humans get their bearings

...llway in a hotel. "This has been observed in every species tested, even when landmarks alone could be used, s...s, Dr. Sturdy said. "We have to look away from lab species and look at the diversity out there. There could be a lot of other species that have other ways of d...

Mechanism for the captation of nutrients in plants- unknown to date

...design of experiments aimed at enhancing vegetable species in the interest of humanity. Researchers at the I...design of experiments aimed at enhancing vegetable species in the interest of humanity. One of the great questions thrown up by the fact that saccharose pick-...

Where Bacteria Get Their Genes

... material from their parental cells and from other species of bacteria. Ochman and his colleagues' work show...ertain that it's the result of an infection with a species of Streptococcus and can therefore prescribe an appropriate antibiotic. If you couldn't classify bac...

Big differences in duplicated DNA distinguish chimp and human genomes

...hat much of the genetic difference between the two species came about in events called segmental duplications...of those, there's even more difference between the species due to duplication events," said Eichler. "Now we need to learn the role of those duplication events...

New method shows it is possible to grow bone for grafts within a patient's body

...ghest expectations. Working with mature rabbits, a species with bones that are very similar to those of humans, the researchers were delighted to find that this zone, which they have dubbed the "in vivo bioreactor," filled healthy bone in about six weeks. And it did so without having to coax the bone to grow...

Researchers extend mouse lifespan by protecting against free radicals

...nificance of free radicals, and of reactive oxygen species in particular, in the aging process." This study and others that are able to extend animal lifespan beyond the normal limits are very powerful in that they most clearly demonstrate the important steps and pathways in the aging process, Rabinovitch s...

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