Scientists Put Caterpillars in an Ultraquiet Chamber to Learn How They Hear Without Ears
In a quiet summer garden, a caterpillar perches on a branch, munching serenely on leaves. A moment later it freezes. It senses danger—and just in time. From behind, a wasp approaches, sizing up its prey.
Tobacco hornworm caterpillars don’t look like they have ears, and yet they’re able to sense predators such as wasps. How does the caterpillar know a wasp is approaching?
Scientists do not fully understand how this caterpillar’s senses work, but we are part of a team of biologists and engineers who want to figure it out. Our ongoing research suggests that tobacco hornworms can hear using tiny, supersensitive hairs on their body.
Understanding the intricate biological mechanisms that allow this organism to perceive and interact with its environment would help solve a mystery of the natural world. It could also help scientists design new, cheaper microphone technology.
Because the hornworms’ hairs are so sensitive, we have...
Copyright of this story solely belongs to www.wired.com. To see the full text click HERE
