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Tag: "tank" at biology news

More animals join the learning circle

...nk-mates. The 4-year-old orca lures gulls into his tank by spitting regurgitated fish onto the water's surface. He waits below for a gull to grab the fish, then lunges at it with open jaws. "They are in a way setting a trap," says animal behaviourist Michael Noonan of Canisius College in Buffalo, New York...

Women feel more pain than men, research shows

...ure of 1 - 2 degrees centigrade. The cold pressor tank allows researchers to monitor the pain threshold (the point at which volunteers first notice the pain) and pain tolerance (the point at which volunteers can no longer stand the pain). An upper time limit of two minutes is used in these kinds of studi...

Applying ecological laws to bacteria

...can also be applied to bacteria living in the sump tank reservoirs of machines in an engineering workshop in Oxford, according to a paper published in Environmental Microbiology. Scientists from the Centre for Ecology & Hydrology (CEH) in Oxford, found that the patterns of abundance and genetic diver...

Sudden change in social status triggers genetic response in male fish, study finds

... in which we moved the subordinate male out of the tank and put him in a situation where he could rise and...dominant male was surreptitiously removed from the tank after dark. "Cichlids have great vision, but like all animals, they can't see in total darkness and ...

Creeping crinoids! Sea lilies crawl to escape predators, new video shows

... place to place---Baumiller had put some in a flow tank and noticed that they changed position from day to day, and Messing had noticed the same thing during dives with a submersible off Jamaica and Grand Cayman Island. Both researchers saw sea lilies using their feathery arms to crawl, dragging their sta...

U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming

... place to place---Baumiller had put some in a flow tank and noticed that they changed position from day to day, and Messing had noticed the same thing during dives with a submersible off Jamaica and Grand Cayman Island. Both researchers saw sea lilies using their feathery arms to crawl, dragging their sta...

Superconducting magnet attracts molecular research

... no power at all, although the large liquid helium tank surrounding the coil needs to be refilled every six weeks or so. Once the magnet has been fully tested, Brandeis researchers, as well as other Boston-area universities engaged in NIH-funded biomedical research, will use it around the clock. Expe...

Oops! Researchers publish new findings on the brain's response to costly mistakes

...ping a bag of groceries, or realizing that our gas tank is nearly empty on a lonely stretch of highway, we all make mistakes that aren't just annoying, but potentially costly. Now, a team of University of Michigan researchers has looked inside the human brain and captured the instant when someone makes a...

Some like it hot: Worms at deep-sea vents favor a fiery 45-55°C

...stablished, all the worms migrated to parts of the tank registering 45 to 55 degrees Celsius. For seven hours the worms chose to remain at around 50 degrees Celsius, performing their normal behaviors. Other inhabitants of equally inhospitable environments are known to die fairly quickly under such condit...

Study may help slay 'Yellow Monster'

...which uses depleted uranium for anti-tank weapons, tank armor and ammunition rounds. Depleted uranium is what is left over when most of the highly radioactive isotopes of uranium are removed. "The health effects of uranium really haven't been studied since the Manhattan Project (the development of the at...

Experimental drug reverses key cognitive deficits, pathology in Alzheimer's

...mals could learn to find a submerged platform in a tank of murky water. This test is known to depend on the function of the hippocampus. The researchers found that the treated mice performed significantly better than untreated knockout mice on the task. Significantly, found the researchers, the poorer pe...

Time of day tempers tadpoles' response to predators

.... In his experiments, Fraker exposed tadpoles in a tank to the chemical signatures of dragonfly larvae for one hour during the day and one hour at night. Then he recorded their swimming and feeding activity during and after exposure. Both during the day and at night, the tadpoles initially responded simil...

Researchers appeal for new regulations to save coral reefs from live fish trade

.... Being able to choose a huge fish to eat from a tank is a big pull in luxury seafood restaurants. Fish such as the Napoleon wrasse, a giant reef fish that commonly reaches 2 m in length and lives for more than 30 years, are top of the menu and especially vulnerable. But once on the plate, the absence...

Contrary to common wisdom, scientist discovers some mammals can smell objects under water

...Then he stuck various objects on the bottom of the tank ?pieces of earthworm, small fish, insect cuticle and blobs of wax and silicon ?and observed the moles' behavior. He saw that, when the moles approached one of these targets, they would blow bubbles that came into contact with the target's surface and...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

...the plunge The seal experiment took place in a tank in which the seals took a series of experimental dives into cold water of 2-3° C. The researchers recorded shivering, heart rate, brain temperature and rectal temperature while the seals were on the surface and while they were diving. The seals sh...

Research project tackles 'regeneration' gap

... Project will shortly begin establishing its think tank of international scientists, Steindler said....

Fish can determine their social rank by observation alone, study finds

... and rivals The fights were staged in a square tank divided into several compartments. A lone male obs...rent bystanders were tested in the familiar square tank and in a new setting--a rectangular aquarium with three adjacent compartments. In each test, a bysta...

Baby fish 'smell their way home'

...tching." The team exposed tiny fish larvae in a tank to pure streams of water from four different reefs. To their amazement, within minutes a surprisingly high percentage of baby fish had congregated in the water flow from their home reef. "It was a lot more than you'd expect to happen by pure chan...

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