Tag: "burrowing" at biology news

Scientists Identify Retrovirus-Like Components In Corn Genome

...emselves within each other like nesting dolls, and burrowing between genes rather than inserting into the genes, as expected. "We don't know how they do this, but because they target their insertions between genes, these repetitive elements have managed to side-step some very negative effects on their host," B...

Fossil Evidence Of Worms Over One Billion Years Old Reported In Science

...rhat findings are bestexplained as the products of burrowing animals. For example, the diameters varyfrom tunnel to tunnel but remain constant along each individual tunnel. Thetunnels also do not resemble the structures commonly caused by physicalprocesses and are similar to younger trace fossils known to be p...

Burrowing mayfly swarms signal a healthier ecosystem, USGS scientists say

...le, USGSbiologist Thomas Edsall says the clouds of burrowing mayflies emerging fromwestern Lake Erie this summe...lity, and throughoutmost of the next three decades burrowing mayflies were virtually absent fromtheir former Great Lakes habitat. For the last five years, howeve...

Gobbling food helps threadsnakes avoid danger; in a snake-eat-ant world, it's survival of the fastest

...em difficult to work with. Also, theirtendency for burrowing makes them extremely difficult to find, Kley said....

New fossil snake with legs, reported in Science

... with the traditional view of small terrestrial or burrowing lizards as snake ancestors. A group of scientists, led by Olivier Rieppel of the Field Museum in Chicago, Illinois and Eitan Tchernov of the Hebrew University of Jerusalem in Israel, brought Haasiophis into the midst of this origins controversy aft...

Chemical discovered that causes plant tumors

...t helps to prevent the emerging weevil larvae from burrowing into the pea pod. It may also fall off, dry out or be eaten by predators, the researchers said, and it reduces the chance that the pea weevil will actually succeed in infesting a pea."It's pretty obvious this is a natural defense mechanism that the p...

DNA analysis of salamanders turns up new species under almost every log, UC Berkeley zoologists find

... neck and back, and by shrinking their legs. Rapid burrowing makes it easier to escape predators, Wake said, en...nders developed in parallel the same mechanism for burrowing in the soil, by lengthening their vertebrae - a strategy we thought had evolved only once in salaman...

Parasite offers natural way to control leaf-eating slugs

...l worms of this species infect slugs and snails by burrowing under their shells and into their skin. Infected slugs stop eating immediately, and die about five days later, as the adult worms emerge. Adults also lay eggs in the host's corpse, producing...

Microbe first to break down PCBs

...ased when disturbed by natural currents and tides, burrowing activity of aquatic animals and dredging....

Sweet success on the way to vaccine for ulcers, stomach cancer, reported in Science

...ng an H. pylori infection, when the bacteria are burrowing into the mucus membrane lining the stomach, the membrane cells display certain sugar molecules on their surfaces. The sugars help usher immune cells into the damaged tissue, but they have an unintended consequence as well, Born and his colleagues fou...

Rice researchers develop first fully automatic method to track 3-D movement of cancer cells

...oth types of cells showed a tendency to oscillate, burrowing into tissue, reversing briefly and burrowing back along a slightly different vertical path. This suggests that both types of cancer invade tissue...

University of California, Riverside study dates our ancestors

...tom of the ocean -- were such that if animals were burrowing or walking or crawling along the seafloor, their traces would have likely been preserved. We see a gradual increase in diversity and complexity of trace fossils from about 555 million years ago, known as the Cambrian Explosion and which likely refle...

Mosquito genome sequence--Published in the journal Science

... Proteins on malaria's surface aid the parasite in burrowing into and positioning itself within the blood cells. Alan D. Cowman and Brendan S. Crabb discuss how the Plasmodium genome will help researchers better characterize these proteins, leading to new targets for drug and vaccine development. A report by...

Study shows fossil records remain stable in storm beds

...ings could have disturbed the sea floor--organisms burrowing through it, storms, for example--but that doesn't appear to have happened. "The fossils were preserved in a series of stacked or amalgamated horizons of rock totaling approximately one foot thick," Barbour Wood said. "The horizons are believed to ha...

Prehistoric tusks point to earliest fossil evidence of differences between sexes

...ales and measured about one metre in length, was a burrowing herbivore with a beaked skull and short tail. In its investigation, the team was able to rule out other uses for the tusks, Reisz says. The tusks were not used for feeding because the females did not have them nor were they used for digging because ...

Crabs switch skeleton types

... such support are elephant trunks and clams' soft, burrowing "foot" and siphons. "This is also exciting to us since crustaceans belong to a really big group, the arthropods, which includes insects and are the most diversified non-microscopic animals on Earth," Kier said. "We haven't looked for this switching ...

Invasive aliens

...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 island" will be part of Oral Session #42: Mammal Ecology: From Mice to Elephants, held Wednesday, August 6, 8 AM 11:30 AM, SITCC, Meeting Room 104. So...

Armies of fighting fungi protect chocolate trees

...ndophytes of woody plants land as airborne spores, burrowing into the plant tissues and living in the spaces between cells -- a process called "horizontal" transmission. According to Arnold, studies on grasses had revealed that fungi passed down from generation to generation -- called vertical transmission -- ...

Scientists discover where snakes lived when they evolved into limbless creatures

...heir limbs. Their land-based lifestyle, including burrowing underground at least some of the time, may be the ...upport your limbs." The researchers note that the burrowing lifestyle of many other species, including legless lizards, is correlated with the complete loss of ...

Frogs muscle-in on 'wasting' process

...doctoral fellow, Dr Nick Hudson, the green-striped burrowing frog (Cyclorana alboguttata) can remain buried in ... insight into the phenomenon of aestivation in the burrowing frog. Current hypotheses suggest that it produces high levels of antioxidants within the muscle, whi...

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