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Tag: "islands" at biology news

Study suggests evolutionary link between diet, brain size in orangutans

In a study of orangutans living on the Indonesian islands of Borneo and Sumatra, scientists from Duke Univer...uctuations that disrupt vegetative growth on other islands in the Indonesian region, the researchers' report said. The scientists found that the nutritionall...

Global warming may have damaged coral reefs forever

...r 50,000 square metres of coral reefs in the inner islands of the Seychelles in 1994 and 2005. Their repor... Yet while a bleak picture is painted in the inner islands of the Seychelles, the survey area, from a diving perspective the outer carbonate islands still offe...

Polynesia explorers created worldwide web of scientific knowledge

...hout Europe; Chamisso wrote about Hawaii and other islands with a sensitivity and accuracy still admired among anthropologists." They had plenty of help ?from their captains, officers, voyage artists and physicians, and from Polynesian travelers who came aboard, bringing "their own thirst for knowledge, pow...

A dichotomy in migration patterns found for sea turtles in east Atlantic

...loggerhead sea turtles that nest on the Cape Verde islands off of West Africa, researchers have found an unexpected dichotomy in turtle behavior: While some turtles leave the nesting grounds to feed on bottom-dwelling sea life in shallow coastal waters, others leave Cape Verde to roam the much deeper open oc...

Marrow-derived stem cells deliver new cytokine to kill brain tumor cells, offer protection

...nti-tumor response that tracks to migrating glioma islands and offers long-term protection ?all of which would make this a very attractive therapeutic option." In the animal study, bone marrow-derived neural stem-like cells (BM-NSC) genetically engineered to produce IL-23 were injected into intracranial gli...

Not just the birds

...experiment The Aleutian archipelago has over 450 islands in the highly productive North Pacific Ocean and Bering Sea. In the harsh northern climate, the islands are covered in maritime tundra and nutrient-impoverished soil. With no native mammals, vast populati...

Heart-healthy compound in chocolate identified

...rs from the Kuna Indians, who live on the San Blas islands off the coast of Panama. High blood pressure and other signs of cardiovascular disease are rare among the island-dwelling Kuna, who are also known to consume large amounts of flavanol-rich cocoa -- three to four cups per day. However, previous studie...

Pacific Islands paradise protected

...oenix Islands and Line Islands) with a total of 33 islands to make it the largest atoll nation in the world. President Anote Tong said establishing the Phoenix Islands Protected Area ensures that the people of Kiribati can always benefit from the rich ocean life of their home. "If the coral and reefs are pr...

Patterns in genome organization may partially explain how microbial cells work

...ysis generated diagrams of psychedelically colored islands of statistically significant patterns floating in a sea of insignificant patterns," said Palsson, author of Systems Biology: Properties of Reconstructed Networks (Cambridge University Press, 2006). "Basically, it demonstrated that most bacterial geno...

Predators keep the world green, ecologists find

...o create a lake (Lago Guri) containing hundreds of islands that were formerly fragments of a continuous lands...lands, while the others were on the mainland or on islands with a complete or nearly complete suite of predators. They found that, by 1997, small sapling dens...

Pretreating rogue cancer cells with aspirin cripples their resistance to targeted therapy

...most species extinctions have occurred on isolated islands following the introduction of invasive predators such as cats and rats. This study shows that the extinction crisis has now expanded to become a full-blown assault on Earth's major land masses, with the majority of at-risk sites and species now found...

New study pinpoints epicenters of Earth's imminent extinctions

...most species extinctions have occurred on isolated islands following the introduction of invasive predators such as cats and rats. This study shows that the extinction crisis has now expanded to become a full-blown assault on Earth's major land masses, with the majority of at-risk sites and species now found...

Students discover 11,000 year old remains of Irish Elk

...er for several more hundred years than surrounding islands because of the possible slower rate of colonisation by forest after the Ice Age, before the elk finally became extinct. The remains, which will now be scientifically dated, could add to growing evidence that giant deer were present on the island muc...

Plant defenses prompt bacterial countermeasure in the form of 'island' DNA excision

... plant, why are they and their surrounding genomic islands maintained by the bacteria at all? There are many genes included in the genomic island that is excised by the halo-bright strains studied here, and these other genes may well encode proteins that allow the pathogen to survive optimally in the light-i...

Study shows big game hunters, not climate change, killed off sloths

...ctions to occur at about the same time on both the islands and the continent since climate change is a global...open up possibilities for restoring parts of these islands to something near their original condition," he said. The only reason the living species of sloths ...

Frog peptides block HIV in lab study

...ding to Tononi, "the brain breaks down into little islands that can't talk to one another." The new findings are important because they provide the first direct clues about how the brain alters the state of consciousness during sleep. Consciousness is a scientifically murky realm as little research has been...

Deep sleep short-circuits brain's grid of connectivity

...ding to Tononi, "the brain breaks down into little islands that can't talk to one another." The new findings are important because they provide the first direct clues about how the brain alters the state of consciousness during sleep. Consciousness is a scientifically murky realm as little research has been...

Searching the depths of the straits of Florida for disease cures

..., which encompasses a number of small, uninhabited islands 30 miles north of Cuba. Cay Sal was once notorious... a 60-mile wide sand bank fringed with a few small islands and surrounded on all sides by the deep Straits of Florida and the swiftly flowing Florida Current, ...

Cricket's finicky mating behavior boosts biodiversity

...n on the Laupala's phylogeny and on the age of the islands in the Hawaiian archipelago. The youngest island, Hawaii, was formed less than 500,000 years ago. ...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

Huge colonies of seabirds accustomed to nesting on islands free of predators began disappearing when fur traders started introducing foxes onto islands in the Aleutian archipelago in the 18th century. The ground-nesting birds made easy meals for the fo...

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