Venom hunt finds 'harmless' snakes a potential danger
...irst venomous snakes evolved from the heavy-bodied swamp monsters similar to the anacondas of today. These snakes traded in their heavy muscle for speed and agility. Venom rather than muscle became the tool necessary for these snakes to capture their prey," he says. The consequence of this is that venom ...Researchers solve the mystery of a key structure in immune system cells
...as some pathogen that figured out that if it could swamp this system with one antigenic structure, it would just blind it. So the immunological synapse allows the system to adapt to very strong signals by reducing the T-cell receptor density, and then arrive at a uniform signaling rate in any situation." D...Tufts civil engineer predicts Bostons rising sea levels could cause billions of dollars in damage
...ea levels, the same-sized wave that normally would swamp the 100-year floodplain in Boston will soon become high enough to overtake the 500-year floodplain," explained Kirshen. "Sea level rise will have a drastic impact on metropolitan Boston and other similar coastal cities if steps aren't taken to addre......s you should it probably has something to do with swamp gas, and a faintly unpleasant sulfurous smell that...ickering lights seen at night above that very same swamp (mundanely, methane igniting spontaneously with traces of odorous hydrogen sulfide found in the bog'...Study offers a rare view of how species interactions evolve
...the presence of enough other insect pollinators to swamp the beneficial effect of pollination by Greya. "The moths depend on the plants for food, but the plants are not affected either way, because the copollinators are effective and the moths are not abundant enough for their feeding to have a negative e...Largest fossil cockroach found: Site preserves incredible detail
...ate. Ohio was a giant tropical swamp then, but this particular site was unusual. "Normally, we can only hope to find fossils of shell and bones, because they have minerals in them that increase their chances for preservation,"...Scientists discover how nerve cells move from target to target as they wire up the developing embryo
...ay from an otherwise-attractive target might be to swamp the attractive signals with repellent cues. But the UCSF scientists discovered that the axon's behavior is not dictated by the sum of all positive and negative signaling molecules. Rather, they found, the axon's receptors for the repellent molecule -...Study indicates certain rules underlie calling behavior of bullfrogs
...ing. While the research trio worked a swamp edge, Boatright-Horowitz discovered she could predict which males would call next. She designed the study to determine a calling pattern. The density of bullfrogs was such that it was easy to identify individuals, Boatright-H......re, rapidly increasing human populations will soon swamp any economic incentives for supporting conservation that may accrue from tourism, employment or other forms of economic development associated with parks. "Also, if you constantly rely on monetary benefits to the neighboring communities for conserva......uy, then partially drain, 100 square kilometres of swamp on the north bank of the River Waini and lease from Guyana a buffer zone three times as large. Hinds calls the site "generally unproductive land never before commercially utilised". But the deal documents acknowledge that up to 54 families living the......numbers of seeds on each of them - enough seeds to swamp the numbers delivered naturally by the stream. The invaders colonized all tussocks about equally, suggesting that the observed pattern was due to the supply of seeds and not resource availability or some other characteristic of the tussock. "Over...USGS scientists find new population of Asian swamp eels in south Florida
A new population of non-native Asian swamp eels, a highly adaptable predatory fish, has been ...a separate introduction from previously discovered swamp eel populations in Georgia, north Miami, and Tampa because of the widely separated ranges and appare...Invasive fishes pose increasing threat to U.S. waters and native fishes, says USGS
...ecies. South Florida, where populations of Asian swamp eel were discovered in 1998 inseveral locations, including just outside the Everglades. These fish, which aresold in the aquarium trade and which may have escaped or been released into thestate's waters by aquarists, are voracious predators that coul......breakdown of residual biological matter (twigs and swamp grasses shown)beginning with microbrial sunlight energy conversion. After 5 months of sunlightexposure, a small sample is taken out and put in a sealed container, which isthen frozen for two months. When it thaws, it is placed back in the sun. Asampl...University Of Cincinnati Geologists Analyzes Evolutionary Impact Of Mass Extinctions
...a distinct class of events -- so powerfulthat they swamp outnormal evolutionary processes. Others have argued the opposite, that overgeologic time, massextinctions have had little effect on global diversity trends. University of Cincinnati geologist Arnold Miller argues in a review paper in theAugust 21 i...Beaver, Architects To The Birds
...andred-winged blackbird prefer older ponds and the swamp sparrow, commonyellowthroat and veery were found in all beaver pond habitats. "A beaver pair's goal in building a dam is to create a pond where theycan build a lodge, hide from predators in the water, raise offspring and storefood for the win...USGS Scientists Find New Invasive Fish Species In Florida
The Asian swamp eel, a non-native fish, has been found in canals, ...glades and other southeastern wetlands. Well, the swamp eel may be that creature." The lakes, streams, canals and swamps of Florida and the Southeast are ......ged a sackful of saltwater frogs through a coastal swamp inThailand. And, he has suffered the indignity of having a pet baby desertfox nestled in his pocket experience diarrhea. Schmidt-Nielsen, 82, is certainly the only physiologist ever honoredwith a bronze statue of himself contemplating a camel -- a s...