All animals have common denominators in calls
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Last Updated: Thursday, January 07, 2010, 16:29
  
Washington: Giving an insight into the animal communication, a new study has found that from crickets to whales, all the animals have common denominators in their calls.

Scientists at the University of Florida and Oklahoma State University found common denominators in the calls of hundreds of species of insects, birds, fish, frogs, lizards and mammals that can be predicted with simple mathematical models.

Compiling data from nearly 500 species, the team has found the calls of crickets, whales and a host of other creatures are ultimately controlled by their metabolic rates -- in other words, their uptake and use of energy.

"Very few people have compared cricket chirps to codfish sounds to the sounds made by whales and monkeys to see if there were commonalities in the key features of acoustic signals, including the frequency, power and duration of signals," said senior author James Gillooly.

"Our results indicate that, for all species, basic features of acoustic communication are primarily controlled by individual metabolism, which in turn varies predictably with body size and temperature.

So, when the calls are adjusted for an animal's size and temperature, they even sound alike."

The finding, reported in the Proceedings of the Royal Society B, will help scientists understand how acoustic communication evolved across species, uniting a field of study that has long focused on the calls of particular groups of animals, such as birds.

PTI


First Published: Thursday, January 07, 2010, 16:29


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