Echolocation

Question 1

What are three ways of producing sound for echolocation?

Answer 1

Nasal clicks (cetaceans)
Tongue clicks (pteropodids, bats)
The larynx (oral or nasal emission)

Question 2

What has occurred in bat-moth co-evolution?

Answer 2

Moths detect ultrasonic impulses from hunting bat’s echolocation, avoided the sound therefore avoiding predation. Also developed sound-producing organ that made trains of ultrasonic clicks that interfered with bats echolocation. Bats respond to this using radio silence, or calling using slightly different frequencies