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Tag: "snails" at biology news

Scientists find fossil proof of Egypt's ancient climate

...aterpillars to predict the severity of winter, the snails actually reveal clues about the climate and enviro... approximately 130,000 years ago. These particular snails have a life span of between one and two years, and build their shells in a classic spiral with whate...

Molecular miners find pain relief drugs from the sea

...pical waters off the coast of Australia. All cone snails produce venom which they use to paralyse prey befo...re killing and eating them. The venom of some cone snails is toxic to humans ?as many as 30 people are known to have died from cone snail envenomation. The c...

Worms know bad food when they smell it

... range of animals, including invertebrates such as snails and fish. "We don't know if they feel nauseous," Bargmann said, "but we do know that they will learn to reject the food that's made them ill." The group carried out further experiments to explore how worms learn to avoid toxic foods. The results, B...

Research: Snails were overlooked contributors to marsh destruction

... effects of an intense drought, otherwise harmless snails likely killed off thousands of acres of salt marsh... or Spartina alterniflora, so extensively that the snails moved from finishing off stressed patches to decimating large pockets of otherwise healthy marsh in ...

How healthy is that marsh? Biologists count parasites

...ea Grant biologists are cracking open common marsh snails and counting parasitic worms. Their claim: the mor...birds might be a typical sequence for one species, snails to fish to birds for another. These trematodes also stand apart from other parasites in that they ca...

Even a little cooling helps after cardiac arrest

...ea Grant biologists are cracking open common marsh snails and counting parasitic worms. Their claim: the mor...birds might be a typical sequence for one species, snails to fish to birds for another. These trematodes also stand apart from other parasites in that they ca...

Like a snail through the intestinal canal

...d has been developed, inspired by the way in which snails move. On September 18, researcher Dimitra Dodou received her PhD degree from TU Delft based on this research subject. The intestines are an extremely difficult area to navigate through with a medical device. Yet, many people need to have intestinal...

A new target for painkillers

... that eat worms, unlike relatives that eat fish or snails and occasionally deliver a fatal sting to a human ...Olivera's lab in 1979, McIntosh discovered in cone snails the natural form of a drug now used against severe nerve pain. It is Prialt, which must be injected ...

Ocean seep mollusks may share evolutionary history with other deep-sea creatures

...oceanic cold seeps--strange clams, mussels and sea snails that thrive in the sulfur and methane-rich environments--are on average older than the marine mollusk community as a whole, according to a new report in the 8 September issue of the journal Science, published by AAAS, the nonprofit science society. ...

Proteins necessary for brain development found to be critical for long-term memory

...short-term memory was retained, 24 hours later the snails -- which normally would remember the events of the previous day -- exhibited no memory of the shocks. Carew and colleagues went on to show that, when the actions of the growth factors were prevented, long-term enhancement of the connections between ...

Parasites' impact goes beyond host to affect ecosystem

...rea living on the mainland, approximately half the snails on Appledore Island are infected. That’s because L... experiment confirmed Wood’s and Byers?hypothesis: snails infected with the parasite ate 40 percent less macroalgae than uninfected snails. In the field, wher...

Climate change impacts stream life

...an be seen with the naked eye such as crustaceans, snails and larval insects including stoneflies or mayflies. Professor Ormerod, said: "Streams and rivers are likely to be highly sensitive to climate and yet long-term evidence of effects is scarce globally. Our study shows a clear climate-change sign...

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