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Tag: "fish" at biology news

Reversing cancer cells to normal cells

...vironment of human embryonic stem cells, the zebra fish and the chick embryo. Dr. Hendrix’s plenary lecture on April 29 is a highlight of the scientific program of the American Association of Anatomists. Her presentation is titled "the convergence of embryonic and cancer signaling pathways: role in t...

Vitamin D deficiency widespread during pregnancy

... common." Vitamin D is found naturally in fatty fish but few other foods. Primary dietary sources include fortified foods such as milk and some ready-to-eat cereals and vitamin supplements. Sun exposure for skin synthesis of vitamin D also remains critical. "Our study shows that current vitamin D di...

The great escape -- fleeing fish fall in line

...hat during a predator attack it is a case that all fish escape at once in the desperate hurry to escape as...h indicates that this is not the case, and in fact fish in schools escape using a relatively fixed chronological order. This research was carried out at the...

Endangered shortnose sturgeon saved in Hudson River

...first time in U.S., and probably global, history a fish identified as endangered has been shown to have re...government. In the past 100 years, 27 species of fish have been died out in North America and four have become extinct. The U.S. government currently prot...

Microbes compete with animals for food by making it stink

..., researchers baited crab traps with menhaden -- a fish typically used for bait -- that had been rotting i...crabs readily ate both freshly thawed menhaden and fish that had soaked in water with antibiotics, but refused to eat the rotten fish not protected from mic...

Single molecule extends fat mice lives by reversing gene pathways associated with disease in obese

...espan of worms and flies by nearly 30 percent, and fish by almost 60 percent. It has also been shown to protect against Huntington's disease in two different animal models (worms and mice). "The "healthspan" benefits we saw in the obese mice treated with resveratrol, such as increased insulin sensitivi...

By 2048 all current fish, seafood species projected to collapse

...For example, if the long-term trend continues, all fish and seafood species are projected to collapse with...said. "At this point," Worm said, "29 percent of fish and seafood species have collapsed -- that is their catch has declined by 90 percent. It is a very c...

How fish mend a broken heart

New evidence to explain how a common tropical fish mends a broken heart may suggest methods for coaxi... the body, is one of two chambers that make up the fish heart. "This study gets at some of the important mechanistic questions about how they rebuild the he...

Salmon farms kill wild fish, study shows

New research confirms that sea lice from fish farms kill wild salmon. Up to 95 per cent of the wild juvenile salmon that migrate past fish farms die as a result of sea lice infestation from the farms. The results of the research have been ...

Triple threat: World fin trade may harvest up to 73 million sharks per year

...ical. Many sharks may be recorded as unidentified fish and thus not be recognizable as sharks in the FAO records. "Due to the low value of shark meat in many markets, shark fins may be the only part of the shark retained, and often these fins are not recorded in the catch log or when landed at ports. ...

'Killer' B cells provide new link in the evolution of immunity

... potential new strategy for developing much-needed fish vaccines. In the adaptive immune system in mamma...es and microbes for destruction. "When examining fish B cells we see them actively attacking and eating foreign bodies, which is a behavior that, accordin...

Discovery in the evolution of the immune system absorbing cells

...a, the group has been able to show that B cells in fish as well as in amphibians are capable of strong pha... can understand not only how the immune systems of fish and amphibians work but also the origin and composition of the immune systems of humans and mammals"...

Tiny Tampa Bay fish key to evolution of immune system

...and a bucket, scientists studying a tiny primitive fish that makes up 70 percent of the biomass in Tampa B...form of an immune system protein isolated from the fish with X-rays, yielding incredibly high-resolution images of its structure. The lancelet also is known...

Edible coatings will be the packaging of the future

...tible to oxidation, such as nuts, meat and certain fish such as salmon. In his PhD, Javier Osés evaluated to what extent the edible films which he had developed were able to protect fatty foods. To this end, he used a model foodstuff ?sunflower oil. In a first stage, trials were carried out with WPI coa...

Fishy cooperation

...close relatives, the primates, all the way down to fish and other slimy creatures. Over the past decade, this ladder has been challenged by claims of high intelligence and great social complexity in other animals. For example, spotted hyenas establish hierarchies in which dominant females support the rank...

Archerfish tune their shots to universal properties of prey adhesion

... alteration by experience: It occurs even when the fish have been placed for two years in an environment t...ing technique is metabolically costly and that the fish tune the force of their water shots by adjusting the mass of water in a shot, rather than altering t...

Virus may control Australia's

...able resource in Asian countries, in Australia the fish is generally viewed as a major pest. "Given their...g fish. During extensive flooding in the 1970s the fish escaped from farm dams and took over the waterways. They can tolerate a wide range of water temperat...

First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands

...as charismatic as monk seals, or colorful aquarium fish (until you look under a microscope), they form the complex tapestry that supports the existence of the larger animals, and changes in their abundance or diversity are often the first indicators of environmental impacts or changes. These groups of org...

Small, smaller, smallest -- The plight of the vaquita

... Large-, medium- and small-mesh gillnets set for fish and shrimp entangle and kill vaquitas far too frequently. The best available quantitative estimate of bycatch refers to only one of the three main fishing ports: 39 vaquitas/yr (95% CI: 14, 93). Current population size could well be around 400 anima...

A new target for painkillers

... species that eat worms, unlike relatives that eat fish or snails and occasionally deliver a fatal sting to a human fisherman. -- RgIA is from the species Conus regius, which measures 1.6 to 2.8 inches in length and lives from Georgia southward along Central America to Brazil's central coast. -- Vc1...

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