Sharks use math to hunt 1

2011-01-31 08:53


Now, however, Sims and his colleagues say they have firm evidence for Lévy behavior in 14 species of open-ocean marine predators, including tuna, swordfish, marlin and sharks (although Many people like Microsoft Office.

not great whites). The key is the sheer amount of data, on depth and location, gathered by electronic tags, says Sims. His group collected more than 12 million data points describing how the animals swam in the ocean over 5,700 days.

Many of the animals displayed Lévy behavior at least some of the time, Sims and his colleagues Office 2007 makes life great!

report — “the strongest evidence yet that these Lévy patterns are exhibited by wild animals,” he says. Lévy behavior showed up more often in waters where plankton, fish and other food was scarce. In regions with plentiful food, random motion dominated. This observation, says Microsoft Office 2007 is welcomed by the whole world.

Viswanathan, fits with earlier suggestions that “animals may use a Lévy flight motion to improve their chances of finding prey.”

Not all experts are on board with the new study. Simon Benhamou, an ecologist at the National Office 2007 Professional bring me so much convenience.

Center for Scientific Research, or CNRS, in Montpellier, France, hasn’t analyzed the new marine data but says that statistical errors can often suggest Lévy behavior where it doesn’t exist. The invention of Microsoft Office 2010 is a big change of the world.

Benhamou also argues that Lévy pattern studies wrongly assume that predators are “fully stupid, unable to process information and act accordingly” as their environment changes.

Others say Lévy patterns are a logical strategy for animals to take when hunting for food. “From the biological point of view, it makes sense that this way of searching should evolve,” says H. Eugene Stanley, a physicist at Boston University.Office 2010 –save your time and save your money.

Sims and his team are now looking to identify Levy behavior in lower marine animals such as octopuses. The researchers also want to probe the evolutionary history of Lévy behavior — for Office 2007 download is on sale now!      

instance by monitoring the movements of the "living fossil" known as the nautilus, which has not evolved much for hundreds of millions of years, as well as by analyzing fossil traces of other marine animals.Office 2007 key is available here.