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Tag: "sand" at biology news

Releasing fish for the future

...ed line-caught snapper, silver trevally, mulloway, sand whiting, yellowfin bream and dusky flathead. Th... other commonly-caught species including luderick, sand mullet, garfish, tailor, Australian bass, Murray cod and golden perch. NSW DPI scientists Matt Br...

New bacterium discovered -- related to cause of trench fever

...also home to another Bartonella species, spread by sand flies. The researchers first thought this was causing the patient’s infection. But genetic comparisons showed that although the new bacterium is related enough to be classified with the other Bartonella bacteria, it is nevertheless distinct from...

How to look at dinosaur tracks

...dertracks?reveal the squishing and displacement of sand when the heavy dinosaur took a step. “The tracks and undertracks of large theropods found in the [Middle Jurassic] Entrada Sandstone at the studied locality come in a wide range of morphologies, mainly as a result of present-day erosion that has e...

Researchers develop way to calculate speed of bacterial sex

...n subsurface bacteria colonizing surfaces, such as sand and soil grains. The UC-Davis research was funded by the National Science Foundation. The new model was then used to re-interpret previously published conjugation data. The findings revealed that bacterial transport and colonization of surfaces is...

Rare soft-shell turtle, nesting ground found in Cambodia

...the turtle spends 95 percent of its life hidden in sand or mud with only its eyes and nose showing. It possesses long claws and can extend its neck with lightning speed to bite with jaws powerful enough to crush bone. “It has the fastest strike of any animal I’ve ever seen, including cobras,?Emmett sa...

Smithsonian scientists discover new marine species in eastern Pacific

...ing from those so tiny they live between grains of sand to 6-foot-long specimens that eat entire crabs and sea hares. During the expedition, Norenburg discovered new species of ribbon worms that live and reproduce among crab eggs. These worms can be important pests of commercial species, but they...

Hofmeyr skull supports the 'Out of Africa' theory

... the amount of radiation that had been absorbed by sand grains that filled the inside of the skullâ?super>TM s braincase. At this age, the skull fills a significant void in the human fossil record of sub-Saharan Africa from the period between about 70,000 and 15,000 years ago. During this critical per...

QUT scientists on the way to sifting out a cure for HIV

... he said. "Titania is a compound found in beach sand and alumina is an intermediate product of aluminium which is the third most abundant element in the earth's crust. "Australia is the largest producer of alumina and titania in the world meaning we can make nano-mesh relatively easily and cheaply."...

Bacteria could steady buildings against earthquakes

...calcite (calcium carbonate) to be deposited around sand grains, cementing them together. By injecting bact...gues found that they could turn loose, liquefiable sand into a solid cylinder. "Starting from a sand pile, you turn it back into sandstone," DeJong said....

Virtual duck bills demonstrate species coexistence

...rating food particles from detritus particles like sand and silt" said Gurd. "To do this, they alter the position of the upper and lower bill while they are feeding. This alters the size of the gap between the lamellae on the upper and lower bill, which allows them to determine the size of the particles t...

Pharmaceutical compounds found in nation's fresh water

...receiving waste water from septic tanks located in sand and gravel deposits in Missoula, Montana. Many pharmaceutical and pharmaceutically-active compounds (e.g. caffeine) persist through the human body and are resistant to conventional waste water treatment practices. They are often detected in aquati...

Ocean sampling yields environmental sources of coral symbionts

...at grow within corals—have been isolated from both sand and the water column; however, neither the locations of these populations nor their ability to establish symbioses is known. For both our understanding of reef ecosystems and their conservation, it is critical to recognize where these symbionts resid...

Antioxidant protects against lung damage in silicosis

...e to crystalline silica in mines and foundries, at sand blasting operations and at stone, clay, and glass manufacturing plants. Crystalline silica induces the production of reactive oxygen species, which can cause scar tissue to develop in the lungs. About 1 million workers are believed to have been ...

Microbe fixes nitrogen at a blistering 92 C

...rchaeon that was isolated from geothermally heated sand near an Italian beach and fixes nitrogen at temperatures up to 64 C. Nitrogen is necessary for all life because it is an essential part of amino acids and proteins. To be used by organisms, gaseous nitrogen must be converted to other compounds, or ...

Exxon Valdez oil found in tidal feeding grounds of ducks, sea otters

... significant amounts of Exxon Valdez oil buried in sand and silt that only becomes dry during the lowest tides. This biologically diverse zone is a prime feeding ground for sea otters, ducks and other wildlife. Previously, scientists believed most of the oil was deposited on beaches at higher tide level...

Brazil creates buffer zone around coral reefs off Atlantic coast

...uniquely Brazilian ecosystem of sparsely vegetated sand ridges) and a complex of small islands, coral and algal reefs. Its natural resources directly support more than 100,000 people. Since 1996, CI-Brazil has conducted biological monitoring at Abrolhos National Marine Park, including assessments of the ...

Iron critical to ocean productivity, carbon uptake

...ugh dust deposited by the wind. Windstorms blowing sand and dust off large deserts are a major source of iron for the world's oceans. "It's like dumping a load of Geritol or some other iron supplement into the water." Three large areas appear limited by a lack of iron, the researchers say ?the southern ...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...sks, echinoderms such as starfish, sea urchins and sand dollars, and crustaceans, outnumber those with backbones, such as fishes, birds, and mammals, almost 2-to-1 (1,669 invertebrate species v. 914 vertebrate). Nearly one-quarter of all known species ?733 in all -- in the Gulf of Maine region are plan...

Potential vaccine developed for deadly leishmaniasis disease

...al Biology . Spread by the bite of infected female sand flies, visceral leishmaniasis infects about 500,000 people annually, with the majority of cases occurring in India, Bangladesh, Nepal, Sudan and Brazil. Despite a major research thrust by the World Health Organization (WHO), no effective vaccine exi...

The world's deepest dinosaur finding - 2256 metres below the seabed

...en compressed to form a pattern of fossil alluvial sand between banks of red shale. ...

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