Tag: "eaten" at biology news

Antarctic penguins thrive in ocean 'oases'

...ill, a tiny, shrimp-like animal, which in turn are eaten by Adelie Penguins, seabirds, seals, whales, and other animals. Although relatively small in area, coastal polynyas play a disproportionately important role in many physical and biological processes in Polar Regions. In eastern Antarctica, more than ...

A realistic way to save rainforests

...tolerant plant to grow new leaves to replace those eaten by insects, so the shade-tolerant plants develop stronger chemical defenses than plants that live in sunlight and can replace leaves more quickly. The drug-hunting principles tested by Coley and Kursar in Panama were developed during years of earli...

Americans' knowledge of genetically modified foods remains low and opinions on safety still split

... GM foods, just 24% of Americans believe they have eaten GM foods while 58% say they have not, suggesting that Americans continue not to recognize the extent to which GM foods are present in foods they eat every day. Opposition to GM foods has softened somewhat in the last two years but opinions about ...

New research finds garlic kills slugs

...leaf. Garlic largely prevented the leaf from being eaten and killed a very high percentage of the creatures. Tests also revealed that ureaformaldehyde, a chemical used in the manufacture of chipboard, was a very effective molluscicide. Lead researcher Dr Gordon Port said: "Nobody has really found a defin...

Designer diseases

...ashed mice. Millions of dollars' worth of grain is eaten or spoiled. Homes and buildings are damaged. The only defence is poison, a slow painful death for the mice, and for any other animals that can get at the bait. How much better it would be to have a kinder, gentler form of pest control, one that rend...

Brain links non-food images with eating -- But only when hungry, study suggests

...ood which also decreased after the volunteers had eaten until they didn't want any more. The volunteers' amygdala and orbitofrontal cortex responses remained the same for the smell (or corresponding picture) of the second food, which they did not eat. Ultimately, this brain system may be far more versatil...

Lake ecosystem critical to East African food supply is threatened by climate change

...pports many types of fish. Only a few species are eaten by people, yet they supply 25 to 40 percent of the animal protein for thecommunities of that region. Recently, the fish supplies have diminished, and catches are shrinking. "Our research provides the strongest link to date between long-term changes ...

Deer help disperse seeds--including noxious weeds

...l ecologist offers a ray of hope to gardeners: "If eaten at the right time, plants may reappear next season, thanks to seed dispersal, though not likely in your own yard. Maybe your neighbor's yard."...

Invasive aliens

...d deeper to evade predation or that crabs may have eaten clams at shallower depths. Whitlow believes that the bivalves' increased shell mass may be the result of slower growth rates of deeper burrowing clams. "Invasive aliens with thrifty genes: Diabetic feral swine on a southeastern coastal barrier islan...

Earthworm invasion will change forests

...t to grow in leaf litter, but when earthworms have eaten away the litter, the sedge thrives. "The sedge can become overabundant and hard to get rid of," said Frelich. "We think it likely that after earthworms become established, the new community will be less diverse. For example, ovenbirds nest in leaf l...

Rapid evolution helps hunted outwit their predators

...r-prey studies," Hairston says. The eaters and the eaten lived together for months in transparent glass chemostats stocked with nutrients (for the algae) and water. The Hairston research group had noticed that the highs and lows of predator and prey populations in the chemostats were occurring completely "...

From Hopkins: Children may outgrow peanut allergies

...allergy recurrence. Almost all of the children had eaten peanuts since their challenge, mostly infrequently and in small amounts. Two of these children had suspicious reactions to peanut ingestion, meaning their peanut allergy may have returned. "Although recurrence of peanut allergy appears to be uncommon...

Wildlife markets and disease transmission

...ase. Since humans first walked upright they have eaten wildlife. But human population densities were far lower than today well under one person per square mile in most tropical forests, for example. Animals were only hunted on a scale to support the subsistence needs of local human populations, and inte...

Mediterranean fishery recovers, thanks to manmade pollutants

...ave reached 75% of their pre-dam value. "The fish eaten today in Alexandria and Cairo may taste as good," said Nixon, " but I believe that they have been fed by sources far different from the rain and soils of Ethiopia that served as sources of the nutrients in the historic annual flood." Nixon discusses...

Fish is not always 'brain food'

...of exposure being fish consumption. Women who have eaten grossly contaminated fish may give birth to children with severe disabilities including cerebral palsy and mental retardation. The United States Food and Drug Administration issued an advisory in 2001, warning women who were pregnant or of child-bear...

Kefir may bolster lactose tolerance in intolerant people

...gurt; and raspberry-flavored yogurt. Each food was eaten after a 12-hour fast and followed up by a series of breath hydrogen tests every hour for eight hours. Participants were asked to record any symptoms of lactose intolerance for eight hours after eating each food. Past studies by other scientists have ...

Mercury in packaged whale meat across Japan may be a major health problem

...s are similar to or higher than the levels in fish eaten by people in the Minamata Bay area of Japan, Endo ...o the Institute of Cetacean Research. This meat is eaten mostly in coastal fishing villages, but also in metropolitan areas around the country. Whale meat is...

No detectable risk from mercury in seafood, study shows

...cean fish like tuna, swordfish and shark. The fish eaten by women in the Seychelles had approximately the same levels of mercury as those eaten by consumers in the United States but they ate much more fish than most people in the United States...

Finicky snails provide new clues to the evolution of coastal ecosystems

...st,'' the authors wrote, ''not a single mussel was eaten in Oregon, despite mean whelk densities that were seven times greater than in California.'' Given the slow growth and low supply of young sea mussels in California, the authors concluded that whelks could partially or completely fill the sea star's p...

Researchers get to the root of cassava's cyanide-producing abilities

...n protects cassava from being eaten by insects or animals," he said. "Plants with moderate linamarin levels in their leaves and that contain nearly no linamarin in their roots are both protected from herbivores and contain ...

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