Tag: "seals" at biology news
Hawaiian Whales Show 'No Overt Response' To Sounds Of ATOC Simulation
...turbance among marine mammals, including elephant seals
and several whale species. Full operation of the controversial ATOC experiment is subject to approval of the National Marine Fisheries Service, which is reviewing reports from the Marine Mammal Research Program. Start-up of ATOC was delayed in 1...
Everyday Technology Underlies First DNA Computer Logic Gates
...ird Lego stuck on top. An enzyme called DNA ligase seals
the gap between the ends of the two input strands, yielding a single new strand. Using regular gel electrophoresis, the length of this new strand can be precisely measured, providing the DNA computer's "answer" or output to the two inpu...
MIT's Mini Respirator Breathes Life Into Mutant Mice
...ut one end. A rubber cuff around the animal's neck seals
thechamber. The pressure in the chamber is then oscillated up and down, causing theanimal's lungs to inflate and deflate. In contrast, today's conventional respirators deliver air via a tube inthe neck. This isn't feasible for mice, however,...
Concerns For Australian Sea Lion
...am's most recent mark-recapture (count) of NZ fur seals
in the summer of 1998 that the species is recoveri...healthy comeback," says Dr Shaughnessy. NZ fur seals
are also found in Western Australia, off southern Tasmania and occasionally in New South Wales. ...
Killer Whales Have Begun Preying On Sea Otters, Causing Disruption Of Coastal Ecosystems In Western Alaska
SANTA CRUZ, CA--With seals
and sea lions in short supply in the North Pacific...se inpopulations of the killer whales' usual prey, seals
and sea lions. Reducedabundance of certain fish species in the open ocean, possibly due tooverfishin...
Swimming Proficiency Of Marine Mammals Ranks Them Among The World's Elite Animal
...as also used video cameras strapped tothe backs of seals
and dolphins to view their swimming dynamics while...se their fore-flippers to propel themselves, while seals
use theirhind flippers and dolphins and whales use a distinctive undulatory motion, butthey all achi...
A Fresh Look At Love And War Between The Sexes
...nd females ofmost mammalian species, from elephant seals
and red deer to human beings, tendto engage in sex...ional effort. Over 83 percent of allmale elephant seals
ever born die without reproducing, a 20-year study found. But a highly successful male may have over...
Video And Data Link Provide Unique "Seal's Eye View" Of The World
...ge land-basedpredators could do such a thing. But seals
and other marine mammals regularlydo. Now ... way to enter the alien world of Antarctic Weddell seals
asthey hunt. Using a small video system and data logger attached to the seals'backs, they have trac...
Biologists predict more marine disease
...sue (Sept. 3, 1999) of the journal Science . Dying seals
infected with distemper from sled dogs, sardines with herpes virusimported in aquaculture feed and corals killed by a soil-borne fungus are among34 organisms cited in a report that says many "less apparent" species may bedisappearing without notice. ...
Fragment of AIDS virus may be used to deliver therapeutic proteins to cells
...embrane,opens it up, inserts the protein, and then seals
it back up. We can't seeanything leaking out from the cell." The fragment used by Dowdy's team comes from the HIV protein TAT, which thevirus normally uses to facilitate gene transcription, not to infect host cells.That the TAT fragment can penetrat...
USGS finds elevated levels of organochlorine pesticides in Aleutian bald eagles
...ors of these Alaskan ecosystems -- sea lions, seals
and sea otters -- have declined substantially in the North Pacific Ocean over the last several decades. While overfishing and temperature regime shifts have been blamed, the role contaminants may play in these declines should be invest...
Grandchildren and global warming
...e mammals. "You end up with high mortality of baby seals
on the Channel Islands, because their mothers can't get enough food," said Gaines. "In some ways the impact in California is accentuated by the rich biodiversity of the state," he said. "But that makes the influences on our systems more complex." G...
Another component of the blood clotting machinery unraveled
...itute the main components of the blood clot, which seals
the site of the injury. A research group, headed by Wolfram Bode in the Department of Structural Research (Director: Prof. Robert Huber) at the Max Planck Institute for Biochemistry in Martinsried/Germany, has solved in the last decade the X-ray st...
Formosan termite may be top concern of entomologists of the new millenium, according to report
...und telephone cable, live trees and shrubs and the seals
on high pressure water lines." Hunter's assessment of the top continuing and emerging entomological problems of the new millennium was published today in the Bulletin of the Royal Entomological Society in London. Hunter is also a co-author of Ecology...
... dynamics. Researchers studying northern elephant seals
have for years been fitting the animals with elect...oratory in Pacific Grove, California, realised the seals
could reveal conditions in remote ocean areas where existing data is sparse. They dive 600 metres do...
Video cameras reveal seals, whales, and other marine mammals take a laid-back approach to deep diving
...ine mammals. The researchers studied Weddell seals
hunting beneath the ice in the Antarctic, a northe... sub-zero temperatures so they could work with the seals
at an isolated breathing hole. The research project was funded by the Office of Naval Research...
Studies of marine mammals indicate a "breathtaking" ability to dive to great depths
...s to diving deeply, marine mammals as different as seals
and blue whales employ the same physiological adap...ndation (NSF), who studied the behavior of Weddell seals
in Antarctica. Using a miniature video system and data cameras and data recorders carried by the an...
Scientists launch the worlds first marine life census
...s possible," notes Block. She points out that, for seals
and other marine mammals large enough to carry satellite-linked data recorders, significant information can be obtained on migration, swimming speed and diving behavior for intervals of a year or more. Researchers singled out advances in pop-off sat...
Study provides new details of 'the birth of a virus'
...gins to bulge and eventually forms a "bubble" that seals
the viral RNA off from the rest of the cell (see accompanying illustration). Thousands of newborn viruses now cling to the outside of the membrane, waiting for one final step to cut them loose and send them on their way to other cells. Ten yea...
Elephant seals - looking good
...h definitely think so - and for good reason. These seals
spend most of their time in the water, migrate tho... 120 minutes. With statistics like those, if these seals
could talk, they would bring us a wealth of ocean information. So, scientists at the University of C...
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