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Tag: "trade" at biology news

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

...bute to desertification. "Studies have shown that trade liberalization, macroeconomic reforms and a focus on raising production for exports can lead to desertification," the report says. "Such distortions to international food markets drive down prices and have often seriously undermined the livelihoods o...

Divergent life history shapes gene expression in brains of salmon

...n are expressed more, since these fish essentially trade bodily size for faster reproductive maturity," she says. "However, it was unexpected, for instance, that genes associated with learning and memory would be expressed at higher levels in the brains of sneakers. It's not yet clear why disparities like ...

Scientists discover odd-ball rodent

...gressive program designed to halt illegal wildlife trade where poaching has devastated animal populations. "It was for sale on a table next to some vegetables. I knew immediately it was something I had never seen before," said Dr. Timmins. Dr Mark Robinson, working with WWF Thailand later discovered other...

Leprosy genome tells story of human migrations, French researchers report in Science

... then spread Leprosy to West Africa, and the slave trade brought the disease from West Africa to the Caribbean and South America, the study suggests. Europeans also introduced leprosy to North America. "Colonialism was extremely bad for parts of the world in terms of human health," said Cole. The disease...

Primates on the brink

...ommercial bushmeat hunting, and the illegal animal trade as the primary threats, and warns that failure to ...ially in Africa and Asia. Live capture for the pet trade also poses a serious threat, particularly to Asian species. "Southeast Asia's primates are subject ...

Undesirable expatriates: Preventing the spread of invasive animals

...s to prevent them from being introduced. As global trade increases, precautions like port inspection and exotic wildlife regulations are essential. Consumers also need to be educated; many exotic animals that are legal as pets could be ecologically lethal if released into the wild." Future research will e...

Novel gene-silencing nanoparticles shown to inhibit Ewing's sarcoma

...g's sarcoma results when two chromosomes break and trade their genetic content in what's technically called a "translocation," activating the oncogene EWS-FLI1 which triggers the tumor growth characteristic for this cancer. In their experiment, siRNA was delivered to this growth-promoting region of the tu...

Turning viruses into allies against cancer

...neered virus -- developed by Biovex Ltd. under the trade name OncoVEX -- showed promise of causing necrosis (death) of tumors cells in most patients. "Tumor necrosis was evidenced clinically and/or by histology in biopsies taken about two weeks after the final dose in a number of patients," said Jennifer ...

Reducing malarial transmission in Africa

...ing of artemether and lumefantrine (co-artemether, trade names CoArtem and Riamet). The other was a combination of CQ and SP - currently under consideration in several African countries, largely due to its low cost. Altogether, the six-dose regimen of co-artemether was highly effective at reducing whether ...

Plants respond similarly to signals from friends, enemies

... order to enter a partnership. The friend wants to trade nitrogen for food. The foe is a parasite that wants to burrow in and harm the plant. In a new finding published in Proceedings of the National Academy of Sciences, researchers at North Carolina State University have found that the two strangers comm...

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