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Tag: "threaten" at biology news

Warning from Asian bees

...e – destructor and jacobsoni; the latter would not threaten the health of local bee populations but destructor has wiped out commercial hives and feral populations the world over and Australia is the last remaining major beekeeping country free of it. Asian bees remain feral, cannot be hived commercially a...

Want to save polar bears? Follow the ice

...ions from the long-term global warming trends that threaten the Arctic’s mega-fauna. Bergen will work with polar bear researchers from the United States Geological Service (USGS). "This will be the first distribution wide study on the ecological needs of polar bears in the context of global warming," ...

Fish extinctions alter critical nutrients in water, study shows

... Academy of Sciences, finds that overfishing could threaten the overall health of an ecosystem because it targets important fish species that play major roles in recycling nutrients. In fact, 20 percent of fish species accounted for more than half of all the recycled nutrients in the ecosystems studied, the c...

Study finds antibiotic resistance in poultry even when antibiotics were not used

...otic resistant bacteria that have the potential to threaten human health. Dr. Margie Lee, professor in the UGA College of Veterinary Medicine, and her colleagues have found that chickens raised on antibiotic-free farms and even those raised under pristine laboratory conditions have high levels of bacteria t...

Twenty of world's 162 grouper species threatened with extinction

... and the continued decline of fish populations can threaten food security and livelihoods in source countries. Their pending inclusion on the IUCN Red List of threatened species also reflects the widespread failure to successfully manage fisheries associated with coral reefs. Groupers are among the oldest ...

Bird sex is something else

...matched doses of X genes between males and females threaten to upset the gene network in one or both sexes. Fruit flies (Drosophila), roundworms (C. elegans) and humans each work around this dosage problem using different molecular pathways. By contrast, for birds it appears that most genes on the Z chromosom...

Global map shows new patterns of extinction risk

...ups can be explained by the different factors that threaten mammals, birds and amphibians: "Endangered bird species are often at risk because their habitats are being destroyed. However, different factors entirely may affect mammals such as tigers which are under threat from poachers, and amphibians which are...

A human taste for rarity spells disaster for endangered species

...ional medicines. The exotic pet trade continues to threaten orangutans, monkeys, reptiles, birds, and wild cats, as well as a wide variety of arachnids, insects, and fish. And it appears that pet trade dealers read the scientific literature for clues to the next hot species: immediately after an article recog...

Researchers find that bumblebees' flower choice matters

...ence for purple loosestrife or other exotics could threaten reproduction of native plants and have devastating effects on ecosystems," Karron says. Who's your daddy? Calculating paternity could be a nightmare. Because pollen from multiple monkey flower plants can be deposited during a single bee visit, ...

Scientists describe new African monkey genus ?first in 83 years

...the frequency of the former, will further serve to threaten this important new genus," the authors conclude. ...

Transgenic goat's milk offers hope for tackling children's intestinal disease

... for developing nations, where intestinal diseases threaten the lives of infants and children. They project that the potential for even more widespread benefit could be realized if this technology is applied to dairy cattle, rather than goats, because the volume of milk available from cows would be much large...

Efficiency, not more doctors, is the prescription for aging population

Recent news reports that threaten a shortage of doctors to treat the burgeoning elderly population are wrong, according to researchers at Dartmouth Medical School's Center for the Evaluative Clinical Sciences (CECS). In a study published in the March/April issue of Health Affairs, t...

Hopkins researchers discover genetic switch that turns off an oxygen-poor cell's combustion engine

...itochondrion produces reactive oxygen species that threaten the life of the cell. "But our discovery clearly shows that hypoxia doesn't simply trigger a passive shutdown of the mitochondrion," said Dang. "Instead, HIF-1 acts as a genetic switch to actively shut down mitochondrial function and prevent the pr...

El Nino events affect whale breeding

...t 50 years and if they continue to rise this could threaten their recovery. ...

Protecting endangered species helps reduce poverty

... fair development in rural areas. "Problems that threaten species like the destruction of habitats and natural resources often contribute to poverty," said Hemley. Conservation and sustainable management of species and their habitats means better protection of forest, freshwater and marine habitats. As a ...

Carbon nanotube absorption measured in worms, cancer cells

...if they'll pass through the food webs and possibly threaten the health of ecosystems and lead to uptake by humans, Petersen said. "This approach has virtually limitless potential for facilitating important future investigations of the behaviors of carbon nanotubes in environmental and biomedical application...

Oceans turning to acid from rise in CO2

... the oceans will become so acidic by 2100 it could threaten marine life in ways we can't anticipate," commented Dr. Ken Caldeira, co-author of the report and a newly appointed staff scientist at the Carnegie Institution's Department of Global Ecology in Stanford, California.* The report on ocean acidification...

Drug resistant avian influenza viruses more common in Southeast Asia than North America

...d discussions of infectious disease outbreaks that threaten humans. For example, a ProMED transmission on July 6, 2005 noted that Joseph Domenech, the chief veterinary officer for the United Nations Food and Agriculture Organization commented that the use of human flu drugs by Chinese farmers is "a big concer...

Ships bring alien jellyfish invaders to our shores

...is 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 Australian coastlines. Introduced species are believed to cost the ...

Woods Hole Research Center plans controlled burn in Amazon rainforest

...nd in the end, to learn whether recurring fire may threaten the very existence of the forest." Repeated burning of transition forests in the Amazon could cause their eventual replacement by fire-prone scrub vegetation through a process call "savannization." This is the second phase of this work, the world's ...

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