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Tag: "fish" at biology news

Building a better mouse model of lung cancer: FHIT counts

...MN, which is also found in smoke but also in beer, fish meal and some preserved meats. They discovered that when the VHL gene was missing as well, the mice were even more susceptible to tumor growth. "We thought this was interesting because this is the first indication that loss of just one of the two cop...

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

...w scientists studying a species of African cichlid fish have discovered that low-ranking male cichlids can...w scientists studying a species of African cichlid fish have discovered that low-ranking male cichlids can quickly become leading men without even putting u...

Zebrafish may hold key to improved cancer research

...esearch studies using this small, striped tropical fish were begun at OSU over 10 years ago, and the speci...r study of human cancers," said Jan Spitsbergen, a fish pathologist in OSU's Center for Fish Disease Research. "We've now proven that most of the carcinogen...

Chernobyl: The true scale of the accident

...vated concentrations of radiocaesium were found in fish from lakes as far away as Germany and Scandinavia....le levels of radiostrontium, which concentrates in fish bone, not in muscle, were not significant for humans. Levels in fish and waters are currently low, e...

Restaurant seafood prices since 1850s help plot marine harvests through history

...obster salad," he says. "It was considered a trash fish no one wanted -- it was not something you'd want t... present, HMAP's unearthed records from fossils to fish taxes give a head start to detecting and managing future trends. The "Oceans Past Conference," orga...

Prenatal exposure to marine toxin causes lasting damage

...to re-evaluate monitoring of waters, shellfish and fish to make sure that the most sensitive parts of the human population are protected from toxic exposure to domoic acid," he continued. The researchers reported their findings in a forthcoming special issue dedicated to research on marine toxins of Neu...

Biotechnology's newest chemical tool

...said, it could then be used as a molecular hook to fish out all molecules that would naturally be methylated in the cell. "There is no comparable way for global analysis of the methylation targets in the cell," Klimasauskas observed. DNA is not the only molecule that is naturally methylated in the cell -...

Researchers find Amchitka seafood safe for now

...e samples showing plutonium from Amchitka and more fish samples showing Cesium-137 from the reference site at Kiska. In all these cases the data was consistent as levels were both safe and what would have been expected anywhere in oceans in the Northern Hemisphere. CRESP PI Charles W. Powers says: "CRESP ...

Scientists and engineers apply nature's design to human problems

...Yoda is developing an auditory retina based on the fish ear. School of Materials Science and Engineering Professor Ken Sandhage and School of Chemistry and Biochemistry Assistant Professor Nils Kr�ger explore nanostructure synthesis via the self-assembled, biomineralized template -- the marine diatom...

How fish hear and make sounds at same time

...l University researchers have learned how a common fish found along the West Coast can hum and hear outsid...ing the auditory system of the plainfin midshipman fish (Porichthys notatus ) -- a 6- to 10-inch fish found along the coastline from Alaska to California --...

Fish and chips: A fast track to understanding blood development

...ion of blood stem cells. Using zebrafish, a small fish that develops red blood cells in a way similar to humans, they "turned off" these genes in the fish embryos and watched to see if the blood formed normally. They found that disrupting the expression o...

Drugs from the deep blue

...cal defenses to deter predators. For example, some fish "taste" food items before swallowing them, sometimes spitting the item out and sucking it back in several times before rejecting or eating it. Some could be natural anti-fouling agents that stop a creature that does not move, like a sponge, from bein...

Locusts' built-in 'surface analysis' ability directs them to fly overland

... in humans but exists among other species, such as fish and insects. The research was conducted by Dr. Nadav Shashar, who is considered a leading world expert on polarized sight, working with two students, Shai Sabah and Noa Aharoni. The research was published in a recent issue of the journal of the Brit...

Vibrio bacteria could be a risk to fish as well as humans

...cteria discovered in the last five years, can kill fish and crustacea, according to researchers at Heriot-... some of these new species are similar to existing fish and shellfish pathogens. The new species, Vibrio brasiliensis, seems to be related to Vibrio tubiash...

Toxic flood lifts lid on common urban pollution problem

.... Organic chemicals are particularly dangerous to fish and other aquatic life because they reduce the levels of oxygen in the water, impinging on its ability to support life. Particulates cloud water, reducing sunlight penetration and plant growth. Once they cross a certain threshold, organic chemicals a...

Carnegie Mellon cyLab researchers work to develop new red tide monitoring

...in the Gulf of Mexico and release toxins deadly to fish and marine mammals. The red tide algae are also po...xious smell from the rotting carcasses of poisoned fish linger along the coast, impacting tourism. Nationwide, all forms of red tide algae cause commercial...

Ships bring alien jellyfish invaders to our shores

...rough the trade of exotic species such as tropical fish and this has potential to displace local marine species, threaten ecosystems and cause billions of dollars in damage and preventive control," says Dawson who tracked the invading jellyfish in Japan, California, western Europe and the east and west Au...

Helping in a selfish world

...e been studying a small species of African cichlid fish that live in groups with a dominant breeding pair ...ions with genetic analyses of relatedness in these fish groups and found that under specific ecological and demographic conditions unrelated individuals mus...

Sleeping beauty plays a significant role in identifying cancer genes

...s took defunct, non-functioning jumping genes from fish and made the genes jump again. This research had reactivated the jumping genes from millions of years of evolutionary sleep; hence the name Sleeping Beauty. In the two current research studies, specially designed Sleeping Beauty transposons were int...

Microbe has huge role in ocean life, carbon cycle

...that their combined weight exceeds that of all the fish in the world's oceans. In a marine environment that's low in nutrients and other resources, they are able to survive and replicate in extraordinary numbers ?a milliliter of sea water off the Oregon coast might contain 500,000 of these cells. "The oc...

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