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How do animals emit sonar radiation? |
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Answer» e a variety of ultrasonic ranging (ECHOLOCATION) techniques to detect their prey. They can detect frequencies beyond 100 kHz, possibly up to 200 kHz.[6]Many insects have good ultrasonic hearing and most of these are nocturnal insects listening for echolocating bats. This includes many groups of moths, beetles, praying mantids and lacewings. Upon hearing a bat, some insects will make evasive manoeuvres to escape being CAUGHT.[7] Ultrasonic frequencies trigger a reflex action in the noctuid moth that cause it to drop SLIGHTLY in its flight to evade attack.[8]Tiger moths also emit clicks which may disturb bats' echolocation,[9][10] but may also in other cases evade being eaten by advertising the FACT that they are poisonous by emitting sound.[11][12] |
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