facebook
twitter
rss
account
search
search
 

Bats might use 'private bandwidth'

Aug. 14, 2007 at 2:37 PM   |   Comments

BRISTOL, England, Aug. 14 (UPI) -- A British study suggested that some bats use specific bandwidths for ultrasonic echolocation, possibly so they can recognize their own species.

Daniel Russo and colleagues at the University of Bristol said horseshoe bats (Rhinolophidae) find their way in the dark and detect insect prey by emitting long ultrasound calls mainly of a constant frequency. But the researchers have found different rhinolophid species show different frequency values that are distinct enough to allow recognition of conspecifics.

The study proved that in Sardinia, Mediterranean (Rhinolophus euryale) and lesser (R. hipposideros) horseshoe bats show divergence in call frequency, spacing them more than their conspecifics living on the Italian mainland.

The scientists speculate that might be done because of the presence of a third species, the Mehely's horseshoe bat (Rhinolophus mehelyi), practically absent on the mainland but abundant in Sardinia. That bat emits frequencies falling between the other two species, preventing confusion in species recognition.

The research appears in the Journal of Biogeography.

© 2007 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Recommended UPI Stories
Most Popular
1
You've got mites on your face, and so does everyone else
2
Panda fakes pregnancy to get more food [UPDATED]
3
Tech industry All Stars developing 'Star Trek'-style communication badges
4
Trash-burning around the world polluting atmosphere
5
Weird 'walking' fish holds evolutionary clues
Trending News
Video
x
Feedback