Detecting the stealth function of some bats

A new study by British scientists shows that some bats can evolve into species that function similarly to 'stealth aircraft' , which can change the ultrasound that they emit, making moths very difficult to observe their existence.

A species of bat.Photo: Internet

In the report published in the latest issue of contemporary digital biology, scientists at the University of Bristol (UK) said, in the long-term evolution between bats and moths, some moths It is possible to feel the ultrasonic waves emitted by bats to avoid being caught by bats.

However, scientists who discovered European wide-eared bats can still catch these moths.

After analyzing the ultrasonic waves emitted by European wide-eared bats, scientists have discovered that, when catching moths, European-wide ear bats have minimized the vibration of ultrasonic waves emitted. Compared to ultrasound waves of other bats, the level of 'quiet' ultrasound of European wide-eared bats is hundreds of times higher.

In addition, scientists also installed small observation devices in the moth's ears to record signal changes in the ear nerves when they hear different ultrasound waves.

The results also showed that other bats fly about 30 meters away from them to be discovered, in which European-wide bats can approach them with a distance of 3.5 meters and have not been detected.