Current Weather
The Spy FM

Squeaking Up A Storm: Yes, That Mouse Is Singing

Filed by KOSU News in Science.
June 17, 2011

When you think of animals that sing, birds will certainly come to mind. Whales might, too. But mice? Or fish?

It turns out mice and fish do sing, although “vocalizations” might be a more technically correct way of describing the sounds they make.

Bret Pasch, a graduate student at the University of Florida, says there are plenty of mouse species that sing. “The more we search, the more we find that rodents and other small mammals produce vocalizations,” he says.

The mice Pasch studies are called Alston’s singing mice. They’re easy to find if you’re willing to spend days on end crawling around in the cloud forests of Latin America.

Pasch says it’s mostly males that sing. Their song consists mainly of a rapidly repeated note, like a trill. To see which songs are most attractive to females, he changes the frequency and rate of this trill.

In one study that he reports in the current issue of Animal Behaviour, he put female mice in a mouse-sized arena with two speakers at opposite ends. Then he played them male songs with different note rates or trill rates, and watched what happened.

The females showed a clear preference.

“They approached the speakers that were emitting the faster trill. They approach that side more quickly, and spent more time there,” says Pasch.

Pasch thinks the faster trillers probably have other qualities that make them better mate material.

Fish also make vocalizations that warn off intruders or attract mates. Andrew Bass, who studies sound production in fish at Cornell University, says fish make their sounds by vibrating the walls of an air-filled sack they have inside them called a swim bladder. And like singing mice, fish can modify their songs in a way that influences a female’s behavior.

“The calls — attributes of the call — clearly contribute to a female’s decision whether to go to one male or another,” he says.

And since fish don’t have access to genetic testing, a good song is probably the best way a male has to prove he’s from good genetic stock and worthy of a female’s attention. [Copyright 2011 National Public Radio]

Leave a Reply

9PM to 5AM The Spy

The Spy

An eclectic mix of the Spy's library of more than 10,000 songs curated by Ferris O'Brien.

Listen Live Now!

5AM to 9AM Morning Edition

Morning Edition

For more than two decades, NPR's Morning Edition has prepared listeners for the day ahead with two hours of up-to-the-minute news, background analysis, commentary, and coverage of arts and sports.

View the program guide!

9AM to 10AM The Takeaway

The Takeaway

A fresh alternative in morning news, "The Takeaway" provides a breadth and depth of world, national and regional news coverage that is unprecedented in public media.

View the program guide!

Upcoming Events in your area (Submit your event today!)

Streaming audio and podcasts

Stream KOSU on your smartphone

Phone Streaming

SmartPhone listening options on this page are intended for many iPhones, Blackberries, etc. with low-cost software applications available to listen to our full-time web streams, both News on KOSU-1 and Classical on KOSU-2.

Learn more about our complete range of streaming services

We're perfecting the patient experience - Stillwater Medical Center