Tag: "colonize" at biology news

Missing genes may help explain why plague bacteria are so deadly

...may have also made the bacterium better adapted to colonize the flea, its preferred vector (means of transmission), and thus facilitate the flea-borne spread of the disease. Perhaps the most infectious of all bacteria in humans, Y. pestis was responsible for the bubonic plague, or "Black Death," that killed ...

JGI announces community sequencing program portfolio

... science." Mosses were among the first plants to colonize the land, 450 million years ago. They predate the flowering plants by some 200 million years of evolutionary time. "Mosses can do many of the things that the flowering plants have forgotten," says Mishler. "Some of their primitive traits--like the ab...

Forest managers can fight invasive species that come with roads

...n is how long it will take for invasive species to colonize a new road. To help answer that question, Hawbake...dispersal events allow invasive species to rapidly colonize new roads. "We found a lag time of up to 60 years between when a road is built and when a road is co...

Whale carcass yields bone-devouring worms

...rted by the ocean currents until they can find and colonize another whale carcass. Rouse notes that, "Because of the highly unusual anatomy of the females, at first we were at a loss to know what type of animal Osedax was." But after examining key portions of the worms' DNA, the researchers determine...

Keeping your peas and carrots safe to eat

...e just beginning to understand how human pathogens colonize leaf surfaces, and how their survival can be influenced by manipulating leaf surface microflora and environmental conditions," he said. ...

Two dinosaurs from Africa give clues to continents' split

...gops and other animals used narrow land bridges to colonize adjacent continents and roam within a few degrees of the South Pole." The fossils were discovered on two separate expeditions that Sereno led to Niger, one in 1997 and the other in 2000, which have brought to light many new dinosaurs and the 40-foot-...

Molecular image of genotoxin reveals how bacteria damage human DNA

...acteria cause very different kinds of diseases and colonize different tissues. But they all have CDT. To me, that argues that it's playing an important role." Stebbins' structure of CDT visually confirms that this genotoxin is made up of three subunits, including one called CdtB that cleaves, or cuts, DNA. A...

Analysis uncovers critical stretches of human genome

...me further evolution when animals first started to colonize land; after that they must have essentially frozen evolutionarily. "This suggests that these were foundational innovations that were very important to the species, and since the conserved elements are different from one another, that each one was imp...

Recognition of bacteria in the cytosol by the immune system

...suggests that Listeria and other bacteria that can colonize the cytosol do so in a manner that prevents activation of the immune system. ...

Scientists question reports of massive ant supercolonies in California and Europe

...she says, and understanding how they reproduce and colonize is essential if scientists hope to develop realistic strategies that will keep their populations in check. "Our data show that it's not the case that the whole California coastline is one genetically homogenous supercolony," says Gordon, a profess...

A new spin on spirochetes

...equence reveals mechanisms used by T. denticola to colonize and survive in the complex environment of oral biofilms," says Seshadri, the study's first author. TIGR's collaborators in the PNAS study included Steven J. Norris at the UT Health Science Center at Houston and George M. Weinstock at Baylor College o...

New study finds evolutionary diversification in Hawaiian spiders

...dy results suggest a possible explanation: Species colonize new islands as they form. Over the years, species keep piling on, as a result of both evolution and adaptation, resulting in more species than the land mass can actually maintain over the long term. On older islands, species jostle and compete for sp...

Ancient DNA mutations permitted humans to adapt to colder climates, UCI researchers find

...r individuals to survive the winter, reproduce and colonize the higher latitudes. "This explains the striking correlation between mtDNA lineage and geographic location that we still see today in indigenous populations around the world." It also explains why people with a certain ancestral history may be more...

Extreme 2003 takes students worldwide to the oceans depth

...Scientists also will be studying the bacteria that colonize vents early in their development in comparison to the bacteria that inhabit the vents as they mature. Also, there will be an attempt to bring living Pompeii worms to the surface using a pressurized aquarium. The 2003 expedition is also supported by ...

Urban black bears becoming couch potatoes, study says

...s continue to expand into wild areas, and as bears colonize urbanized regions, people must be educated to reduce potential conflicts. Local ordinances should be passed mandating bear-proof garbage containers for homes and businesses."Black bears and people can live side-by-side, as long as bears don't become...

Scientists believe ancient arachnids may have spun silk like modern spiders

... of arachnids that were among the first animals to colonize land. The burly eight-legged predator had a hard, segmented exoskeleton like a modern beetle, and scientists never suspected that it could spin a web -- until now. The finding -- based on the remarkably well-preserved arrangement of tiny bumps called...

How many fish in the sea? Census of Marine Life launches first report

... the need for comparing species and behaviors that colonize and sustain isolated populations. The number of species known to inhabit the active geology realm stands at 6,000. Vents and seeps were only discovered 25 years ago, but 700 new species have already been described, from a few dozen sites. Recent expl...

Modern global warming more damaging than in the past

... is becoming increasingly difficult for species to colonize areas that become habitable under a changing clima...le species such as birds or butterflies, which can colonize new habitats with relative ease, stand the best chance of survival as temperatures increase. Sessile...

Cross-species mating may be evolutionarily important and lead to rapid change, say IUB researchers

...c hybrids quickly acquired the traits necessary to colonize the extreme habitats of their naturally evolved hybrid counterparts, suggesting that potentially useful traits can be created quickly. Rieseberg and his team also found that the traits were largely the same as those produced by natural selection duri...

Novel bacterium detoxifies chlorinated pollutants

...s that these appendages may allow the organisms to colonize contaminated subsurface environments. Also, phylogenetic analysis described in Nature revealed that BAV1 belongs to the only-recently discovered Dehalococcoides group, which comprises other organisms useful in bioremediation. The findings highlight t...

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Breaking Medicine News(10 mins):Health News:Research helps explain why elderly have trouble sleeping 2Health News:Research helps explain why elderly have trouble sleeping 3Health News:GBK Presents a Luxury Gift Lounge Honoring the Nominees and Presenters of the 2014 Emmy® Awards - August 22nd and 23rd - Beverly Hills 2Health News:GBK Presents a Luxury Gift Lounge Honoring the Nominees and Presenters of the 2014 Emmy® Awards - August 22nd and 23rd - Beverly Hills 3Health News:GBK Presents a Luxury Gift Lounge Honoring the Nominees and Presenters of the 2014 Emmy® Awards - August 22nd and 23rd - Beverly Hills 4Health News:Kowa Optimed (Booth MS13043) to Debut New Portable Slit Lamp at 2014 Vision Expo West in Las Vegas, Nevada 2Health News:Physical Therapists Learn to Relieve Low Back Pain 2Health News:Child Nutritionist Kristen Yarker Wants Parents to Rethink Kids’ Snacks This Fall 2Health News:Child Nutritionist Kristen Yarker Wants Parents to Rethink Kids’ Snacks This Fall 3
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