Tag: "snakes" at biology news

Researchers show how botulism toxin ensnares its target

...ached to its target protein reveals that the toxin snakes the protein around itself -- a sort of "reverse anaconda" -- to recognize the receptor. The new studies show how the toxins that cause botulism and tetanus can recognize and attack particular nerve cell proteins at the neuromuscular junction, which l...

When cobras spit, there's not a dry eye in the house

...issue. Through a narrow channel in their fangs the snakes can spray the liquid at high pressure similar to ...ting process using a high-speed video camera. "The snakes really do spit only at moving faces," was her first finding; "movements involving the hand elicited ...

At the molecular level, the predator is the prey

...An evolutionary arms race between predatory garter snakes and their newt quarry is turning out to be something of an illusion. At the molecular level, another battle rages. And in this second, miniature realm, it's the newt who's the aggressor. Biologists at Indiana University Bloomington, Utah State Univer...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

... 30 percent earlier if attacked by animals such as snakes or wasps. At her open-air laboratory at the Gamb... assistant professor of biology at BU, used parrot snakes and cat-eye snakes, to find which vibrational cues red-eyed tree frog eggs use to trigger early hatc...

University of Chicago researchers reveal secrets of snake flight

...Despite their lack of wing-like appendages, flying snakes are skilled aerial locomotors," said lead scientis...onne National Laboratory, found that paradise tree snakes are true gliders, traveling further horizontally than dropping vertically. The best flight Socha rec...

The making and breaking of microtubules

...merization and depolymerization, like the writhing snakes of Medusa's hair. Known prosaically as "dynamic instability," this ongoing rapid growth and shrinkage is key to the diverse workings of microtubules in the cell. For the first time, researchers have revealed at molecular level the forms taken by tra...

Genealogy of scaly reptiles rewritten by new research

...elatives of two of the most advanced lineages, the snakes on the one hand and the monitor lizards and their ...early evolution of the venom system in lizards and snakes in a paper led by Bryan G. Fry, of the University of Melbourne in Australia, published in the curren...

Post-Katrina: Lead in disturbed soil may pose heightened health risk

...sley says. Animal tissues sampled, including dead snakes and an alligator, also contained multiple metals and pesticides, but these levels were generally within an expected range and not likely to be caused by the hurricane, the researchers say. Of the 47 mosquito specimens collected in the study area, all...

Ability to capture large prey may be origin of army ants' cooperative behavior

... sting and kill small vertebrates such as lizards, snakes and birds, but do usually not consume them. Other New World army ants prey heavily on insects and other invertebrates. O'Donnell said Cheliomyrmex is related to Old World driver ants in Africa, which also have large-toothed jaws and feed on large-bo...

The giant protein titin helps build muscles

Imagine grabbing two snakes by the tail so that they can't wriggle off in opposite directions. Scientists at the Hamburg Outstation of the European Molecular Biology Laboratory (EMBL) and collaborators from King's College in London have now discovered that something similar hap...

Snakes poisoned at birth

...te of transmission of Salmonella in non egg-laying snakes is from the mother to the offspring during pregnan... a compromised immune system. A high percentage of snakes carry the food-poisoning bug Salmonella, but until this study we didn't know whether the snakes beca...

Taipan venom no snake oil

...d the venom of eight of Australia's deadliest land snakes for their therapeutic potential. His study focusse...eutical development company QRxPharma. "Australian snakes literally have a two-pronged attack when they bite their prey," Dr St Pierre said. "Firstly, venom i...

Starving diamond-back still grows; rattler cuts metabolism 80 percent, use lipid energy source

...ower their metabolism by sleeping off. But desert snakes don't display any such outward manifestation that ... of food-deprivation, but surprisingly, the desert snakes haven't been studied in this regard considering that in the wild they'll go for up to two years with...

War between the sexes influences evolution in some species, say scientists

...e species, say scientists. Birds, butterflies, and snakes have a genetic war between the sexes that influenc...re XX; they are homozygous. Butterflies, birds and snakes are ZW species. The authors explain that maternal-effect genes are those that are expressed in the m...

Evolutionary proof that (eating) the chicken came before the egg

...e authors. Specifically, the researchers examined snakes that have specialized in eating eggs, finding that...recognize prey, and the authors suggest that these snakes may recognize eggs as potential food because of the chemical similarities between eggs and the corre...

Seeing the serpent

The ability to spot venomous snakes may have played a major role in the evolution of m...and learning. Fossils and DNA evidence show that snakes were likely the first serious predators of modern mammals, which evolved about 100 million years ago...

Snakes' virtual glasses, leopard spots and all-optical transistors

...ia.org/wiki/Snakes_on_a_plane Even in the dark, snakes on a plane (at least those of the pit viper and bo...n. An optical analysis of pit organs suggests that snakes shouldn't be able to use the organ to track prey very well because the pit aperture is large and the...

USGS at The Wildlife Society: From sea-ice change to contaminants to predators and prey

...g the life history and habitat use of giant garter snakes since 1995. From specimens of dead giant garter snakes encountered in the field, researchers have conducted analyses for mercury and a variety of other ele...

New biochip helps study living cells, may speed drug development

...ing these channels, including the venom of certain snakes and strychnine. Porterfield's chip is technically classified as a "cell electrophysiology lab-on-a-chip." The device is further described in an article in the journal Sensors and Actuators, published online this month and scheduled to appear in th...

Philippines president enacts new national conservation policy

..., shrimp, crabs, seaweeds, corals sea turtles, sea snakes and others. "Several studies confirm that the central Philippines region, from Luzon to Mindanao, has more marine species per unit area than any other place on the planet," said Kent Carpenter, CI's Global Marine Species Assessment coordinator and ...

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(Date:7/27/2014)... vitro study has revealed that nicotine and cotinine, a ... by a certain carcinogen in smoke. , The carcinogen ... tobacco leaves and ultimately ends up in the tobacco ... and liver, where it is activated by a variety ... mice has revealed that nicotine can partially interfere with ...
(Date:7/27/2014)... asteroid strike that wiped them out if it had ... say. , A fresh study using up-to-date fossil records ... a new narrative of the prehistoric creatures, demise, some ... the few million years before a 10km-wide asteroid struck ... This included extensive volcanic activity, changing sea levels and ...
(Date:7/27/2014)... to date, researchers from the U.K. provide national, regional, ... virus (HCV). Findings published in Hepatology, a journal of ... indicate that genotype 1 is the most prevalent worldwide, ... reside in East Asia. Genotype 3, at just over ... by genotypes 2, 4, 6, and 5. , ...
Breaking Biology News(10 mins):Nicotine found to inhibit DNA-strand break caused by a certain carcinogen in smoke 2Dinosaurs fell victim to perfect storm of events, study shows 2Hepatitis C virus genotype 1 is most prevalent worldwide 2
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