Tag: "marine" at biology news

Bacteria which sense the Earth's magnetic field

...agnetotactic bacteria are widespread in the mud of marine environments. In their cell interior, they form magnetosomes which are aligned into a chain. The bacteria use them to distinguish "up" from "down" in the Earth's magnetic field, and navigate themselves confidently through layers of water to efficient...

Natural compound from 'pond scum' shows potential activity against Alzheimer's

...ciety of Pharmacognosy. Cyanobacteria and other marine natural products have been increasingly found to b...een largely unexplored, experts say. Now, a common marine organism could lead to yet another potential health benefit, says study leader Karl Gademann, Ph.D.,...

U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming

...ideos! With their long stalks and feathery arms, marine animals known as sea lilies look a lot like their garden-variety namesakes. Perhaps because of that resemblance, scientists had always assumed that sea lilies stayed rooted instead of moving around like their stalkless relatives, the feather stars. ...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

...ore NOX is present than in the pristine and remote marine boundary layer. Exposure to nitrogen dioxide in large quantities is known to cause lung damage and respiratory problems, although little is known about the consequences of long term exposure to elevated atmospheric amounts. The presence of this gas...

Creeping crinoids! Sea lilies crawl to escape predators, new video shows

...ideos! With their long stalks and feathery arms, marine animals known as sea lilies look a lot like their garden-variety namesakes. Perhaps because of that resemblance, scientists had always assumed that sea lilies stayed rooted instead of moving around like their stalkless relatives, the feather stars. ...

Gene therapy may protect normal tissues during radiation retreatment for lung cancer

...appening below the ice in the oceans? Research by marine scientists reveals that it was a time of mass dest...d ice. From there, organisms may have invaded open marine shelters of the Antarctic shelf, which were not affected by the advance of ice masses. Or these anim...

Seafloor creatures destroyed by ice action during ice ages

...appening below the ice in the oceans? Research by marine scientists reveals that it was a time of mass dest...d ice. From there, organisms may have invaded open marine shelters of the Antarctic shelf, which were not affected by the advance of ice masses. Or these anim...

The Antarctic Ocean floor

...exciting task of analysing the biodiversity of the marine floor is, little by little, bearing fruit. We trust that it is not too late, given that the experts claim that many species are disappearing ?even before we know about them. ...

The earliest animals had human-like genes

.... Detlev Arendt's group is doing this with a small marine worm called Platynereis dumerlii. "Similar animals...humans from studies of the fly," Arendt says. "The marine worm might well give us an even better look at important conserved processes. Another thing that thi...

New molecule may aid in production of biofuels and fungi-resistant plants

...tons of chitin are produced by insects, fungi, and marine organisms every year. Despite this abundant production, chitin does not accumulate in most ecosystems, indicating that the molecule is somehow degraded. Many aquatic and terrestrial microorganisms produce enzymes called chitinases which are responsib...

A bug's life: Exceptional genomic stability yet rapid protein evolution in a carpenter ant mutualist

...e in root nodules of leguminous plants, in gutless marine worms, in echinoderms such as starfishes and sea urchins, and in specialized cells of insects such as aphids and tsetse flies. Many symbiotic relationships are obligate; neither the bacterium nor its host can live without the other. Wernegreen's gro...

Restaurant seafood prices since 1850s help plot marine harvests through history

...o the 1850s will help plot the shifting harvest of marine species, according to a study to be announced at O...opulations "Oceans Past" Conference More than 100 marine biologists, ecologists, historians and other scientists from 25 countries will attend the conference...

Prenatal exposure to marine toxin causes lasting damage

...esearchers have found that the naturally occurring marine toxin domoic acid can cause subtle but lasting cog...forthcoming special issue dedicated to research on marine toxins of Neurotoxicology and Teratology. In 1987, more than 100 people in Canada became ill after...

Beach pollution is worst during new and full moon

...s to estimate the risk of illness from swimming in marine waters. "This is the largest array of beaches exam...these sources to be contributors of enterococci to marine waters." Boehm cautions that enterococci from beach sands and wrack may not correlate with health r...

UF study first to quantify validity of DNA I.D. tool using marine snails

...und the world by analyzing tissue samples from the marine organisms and comparing them to a comprehensive catalog of species they compiled. The findings are published in the December issue of PLOS Biology. "DNA barcoding ?the ability to take a remnant of animal tissue or blood and compare it with a known...

Researchers find Amchitka seafood safe for now

... western Aleutians to assess radionuclides in that marine environment. Three nuclear test shots were set off...assurance to both those who depend on the Island's marine environment for subsistence food and for the significant commercial fishing interests of the region,...

Emerald Spectre haunts Ontario's ash forests

...aac, whose research is primarily on freshwater and marine invasive species. Scientists believe the borer probably entered North America in ash shipping materials, and was present for as much as a decade prior to being identified. The challenge in the Great Lakes region, he says, is the current extent of th...

Scientists and engineers apply nature's design to human problems

...the self-assembled, biomineralized template -- the marine diatom. Tovey is designing Web-hosting optimization techniques based on the foraging strategy of honey bees. Assistant Professor of Applied Physiology Young-Hui Chang and Assistant Professor of Biomedical Engineering Lena Ting use neuro-mech...

Oceans turning to acid from rise in CO2

...ns will become so acidic by 2100 it could threaten marine life in ways we can't anticipate," commented Dr. K...enhouse gas has been absorbed by the oceans. While marine organisms need CO2 to survive, work by Caldeira and colleagues shows that too much CO2 in the ocean ...

UW-Madison scientists zero in on drugs' sweet spots

...h chemicals -- often found in microbes, plants and marine organisms -- are the bedrock agents upon which many leading drugs are built. The ways sugar groups are organized on a molecule often dictate the agent's biological effects. "In the past, to alter the sugars attached to these drugs was very difficult...

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