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Tag: "largest" at biology news

World's largest flower evolved from family of much tinier blooms

The plant with the world's largest flower -- typically a full meter across, with a bud the size of a basketball -- evolved from a family of plants whose blossoms are nearly all tiny, botanists write this week in the journal Science. Their genetic analysis of rafflesia reveals that it ...

Large size crucial for Amazon forest reserves

...le summarizes bird survey results from the world's largest and longest running experimental study of forest f...er, 2006, the Brazilian government established the largest protected area ever, 15 million hectares in Northern Brazil. Sustainable conservation strategies re...

Canada's new government invests $200M in the fight against the mountain pine beetle

...ommunities and economies. Canada is the world's largest exporter of forest products, with about one third of Canada's potential harvest coming from British Columbia. Canada has 10 percent of the world's forests, including 30 percent of the world's boreal forests. Forests provide jobs and economic benefit...

Bats prey on nocturnally migrating songbirds

...igrating birds congregate. Second, it is among the largest Palaeartic bats and even belongs to the heaviest aerial-hunting bats of the world. A large body mass (up to 50 g for 45 cm wingspan) is probably a prerequisite for subduing prey items as large as passerines, which have approximately the same weight a...

New species declared: Clouded leopard on Borneo and Sumatra

... to body size of any cat. Sumatran tigers are the largest predators on Sumatra. Between 5,000 and 11,000 clouded leopards are estimated to live on Borneo. The total number in Sumatra could be in the range of 3,000 to 7,000 individuals. However, further studies are needed to obtain better population data...

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

... site in the Dry Valleys near McMurdo Station, the largest of the three American bases in Antarctica . "It you look at the last 100 years or so, things have been warming in the valleys. We have seen lake levels rise, more melt from the surrounding glaciers and more aquatic ecosystems replacing soil-based eco...

QUT scientists on the way to sifting out a cure for HIV

...element in the earth's crust. "Australia is the largest producer of alumina and titania in the world meaning we can make nano-mesh relatively easily and cheaply." But Dr Zhu said the future of nano-mesh relied on attracting an industry partner interested in developing the technology into a commercial p...

Gene study shows three distinct groups of chimpanzees

The largest study to date of genetic variation among chimpanzees has found that the traditional, geography-based sorting of chimps into three populations—western, central and eastern—is underpinned by significant genetic differences, two to three times greater t...

Largest genomic search finds genes that may contribute to autism

...ium scientists utilized statistical power from the largest set of autism-related genetic material yet examined. The researchers found neurexin 1, part of a family of genes that plays a role with the neurotransmitter glutamate, and a still-to-be-pinpointed gene on chromosome 11 to be likely susceptibility gen...

NIH announces phase III clinical trial of creatine for Parkinson's disease

... placebo-controlled, phase III study is one of the largest PD clinical trials to date. It will enroll 1720 people with early-stage PD at 51 medical centers in the United States and Canada. "This study is an important step toward developing a therapy that could change the course of this devastating diseas...

Microfossils unravel climate history of tropical Africa

...the land-sea temperature difference has by far the largest influence on continental rainfall. This can be explained by the strong relationship of air pressure to temperature. When the temperature of the sea surface is higher than that of the continent, stronger offshore winds reduce the flow of moist sea air...

Biologically inspired sensors can augment sonar, vision system in submarines

...cessing, noise reduction and data acquisition. The largest array the researchers have built consists of 16 flow sensors with 1 millimeter spacing. Each sensor is 400 microns wide and 600 microns tall. In tests, the researchers?artificial lateral line was able to localize a nearby underwater vibrating sourc...

Organic is healthier: Kiwis prove that green is good

...; Sons, Ltd., based in Chichester, England, is the largest subsidiary of John Wiley & Sons, Inc. Founded in 1807, John Wiley & Sons, Inc. provides must-have content and services to customers worldwide. Their core businesses include scientific, technical, and medical journals, encyclopedias, books, ...

Cryoablation -- A new treatment option for some kidney tumor patients

...cryoablation in 2003. Today’s report contains the largest published results for percutaneous cryoablation patients. Mayo researchers report that not only can this technique be an alternative to surgery, but that in some cases, it has benefits over RFA. Previous experience in percutaneous RFA led the res...

Vitamin D deficiency widespread during pregnancy

... is cause for concern. "This study is among the largest to examine these questions in this at-risk population," Marjorie L. McCullough, Sc.D., senior epidemiologist at the American Cancer Society, wrote in an accompanying editorial. "By the end of pregnancy, 90 percent of all women were taking prenatal vi...

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

...lhousie University, has found that overfishing the largest predatory sharks, such as the bull, great white, dusky, and hammerhead sharks, along the Atlantic Coast of the United States has led to an explosion of their ray, skate, and small shark prey species. "With fewer sharks around, the species they pr...

Human preference for other species could determine whether they survive

...cause it was easy to get to, or because it had the largest population, or because of similar factors. "I went to great lengths to ensure that what I was looking at was a purposeful set of pictures and not one just based on logistics," he said. The popularity rankings were similar across all four books, h...

Endangered shortnose sturgeon saved in Hudson River

...dson River, which flows through one of the world's largest population centers, New York City. The population of shortnose sturgeon, which lives in large rivers and estuaries along the Atlantic coast of North America, has increased by more than 400 percent in the Hudson River since the 1970s, report Mark Bai...

Unique gene regulation gives chilly bugs survival advantage at bottom of the world

...ly bigger than a grain of rice, but it's still the largest free-roaming terrestrial animal to inhabit Antarct... The larvae resemble tiny black worms. "It's the largest species that has adapted to living on the continent year-round," said Denlinger, adding that other n...

Invasive ants territorial when neighbors are not kin

...ts are known to occur in southern California. The largest supercolony extends about 600 miles throughout coastal California and abuts three of the four smaller colonies. At the territory borders, ants from different colonies engage in intense battles that result in the deaths of considerable numbers of wor...

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