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Tag: "wild" at biology news

The evolution of food plants: Genetic control of grass flower architecture

... increased branching of inflorescences relative to wild type plants, with short branches replaced by long,...studying selection as it was domesticated from its wild ancestor teosinte a mere 10,000 years ago. Because transcription factors control many developmental ...

Minor mutations in avian flu virus increase chances of human infection

...ntinued outbreaks of the H5N1 virus in poultry and wild birds, further human cases are likely," said Ian Wilson, a Scripps Research professor of molecular biology and head of the laboratory that conducted the recent study. "The potential for the emergence of a human-adapted H5 virus, either by re-assortme...

Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests

The reason people can approach animals in the wild more easily from a car than by foot may be due to ... who asked him why she could get so much closer to wild rabbits in their neighborhood while riding on her bicycle rather than on foot. "I didn't have an ans...

Escapee farmed salmon infiltrate fitter wild populations

...that farmed Atlantic salmon escapees constitute to wild salmon populations. Consumers and environmentalis...med salmon have evolved genetically differently to wild salmon, therefore backing claims that any integration of farmed salmon back into the wild through es...

Males with elevated levels of testosterone lead shorter lives but have more success siring offspring

...lifetime reproductive success and survival, in the wild or experimentally. Over nine breeding seasons, Wendy Reed (North Dakota State University) and her colleagues followed a group of dark-eyed juncos, small mountain songbirds found throughout North America. They injected males with elevated levels of te...

AIDS drug from sunflowers

...be at present.' DCQA occurs in the artichoke and wild chicory, though in extremely small doses. The market price is therefore currently ?,000 per milligram. 'We want to attempt to cultivate sunflower cells or other plant cells in a nutrient solution together with the mould sclerotinia sclerotiorum and ...

Scientists force viruses to evolve as better delivery vehicles for gene therapy

...rain of virus was 96 times more effective than the wild AAV, and two evolved strains survived injection in...the level of antibodies required to neutralize the wild virus. By sequencing the survivor strains, the researchers discovered that the capsid proteins of t...

For the first time: Longevity modulated without disrupting life-sustaining function

... but they are just as resistant to heat stress as wild type worms whose signaling pathways have not been experimentally manipulated," explained Wolff. "In the future, we may use this protein as a tool to study the genetic and metabolic requirements for extending longevity without causing diverse, wide-...

Uncovering sex-change secrets of black sea bass

...ck sea bass feature prominently on many menus, but wild populations of the fish are in decline and their availability is limited. Because of the high demand, they're a good candidate for aquaculture on the east coast. Except, that is, for one problem: they have a tendency to change sex unpredictably in ca...

Illegal trade is propelling rare turtle toward extinction, new report

...ey purchase have not been illegally taken from the wild or illegally brought into the United States," said...nor transport permits issued for movement from the wild to point-of-export within Indonesia. ...

How to grow a bigger brain

... wild, and the fish also showed behavior closer to wild than to hatchery-reared fish. "There's an obvious difference between the hatchery and the wild fish," said graduate student Rebecca Kihslinger, who carried out the study with Gabrielle Nevitt, pr...

p53, tumor suppression and aging

...the normal level of Mdm2 develop fewer tumors than wild type mice, yet age normally." ...

Albatross study shows regional differences in ocean contamination

...ery difficult to show a cause-and-effect link in a wild population, but there is evidence of health impacts in other species at these contaminant levels," Finkelstein said. Humans are exposed to the same contaminants when they eat seafood, she added. "It is important to realize that these contaminants...

Vegetables inhibit growth of prostate cancer in mice with human tumors

...ery difficult to show a cause-and-effect link in a wild population, but there is evidence of health impacts in other species at these contaminant levels," Finkelstein said. Humans are exposed to the same contaminants when they eat seafood, she added. "It is important to realize that these contaminants...

Salmon go veggie to save wild fish stocks

...almon such as PCBs and dioxins that are present in wild marine fish. This new "vegetarian" dietary approach is increasingly being adopted and will likely be applied to many other cultured fish species in the future. ...

Alaska seal pup diet may hold key to decline of population

...eals pups that were heavier when captured from the wild continued to gain weight and grow regardless of wh...our experimental seals reflect changes observed in wild populations and could explain the rapid population declines seen since the 1970s." Low fat or high...

Discovery may speed forest biotechnology

...s, any releases of such early-flowering genes into wild populations are very unlikely to be of ecological ... have a competitive disadvantage when growing with wild forest trees, and thus would not spread to any significant degree. It also appears that the CO/FT ...

New fruit fly protein illuminates circadian response to light

...n rhythm of fruit flies, Sehgal and others exposed wild type (control) and mutant flies to several light and dark settings ?constant darkness, constant light, and equal periods of light and darkness (a light-dark cycle). During exposure to constant light for one week, the controls developed a disrupted sl...

Afghanistan to protect wildlife and wild lands

...anistan, which contains some of the most beautiful wild lands in Asia," said Peter Zahler, Assistant Director for WCS' Asia Program and a researcher in the region for over a decade. "Conservation is critical for recovery and stability in a country where so many people directly depend on local natural reso...

Chimpanzees can transmit cultural behavior to multiple 'generations'

...ptive chimpanzees, we are able to learn more about wild population-specific behavioral differences, thought to represent a form of cultural variation," said Horner. "These findings also show great similarity between human and chimpanzee behavior, suggesting cultural learning may be rooted deep within the ...

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